FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION (See section 10, rule 13)
1. Title of the invention: A CLEANSING COMPOSITION, AND APPLICATIONS
THEREOF
2. Applicant(s)
NAME NATIONALITY ADDRESS
L'OREAL French 14, rue Royale 75008 PARIS, France
3. Preamble to the description
COMPLETE SPECIFICATION
The following specification particularly describes the invention and the manner in which it
is to be performed.

FIELDOFINVENTION
[0001] The present disclosure relates to the field of personal care products and, particularly, to cleansing compositions. The present disclosure also relates to the use of the composition for cleansing and brightening keratin surfaces.
BACKGROUNDOFINVENTION
[0002] A cleansing product is key to the daily skin care regime of an individual, regardless of their skin type. A good cleanser, which effectively removes dirt, excess oil, make up, grease, sweat, etc., from clogged pores is essential to reap the benefits from other skin products, such as toners, serums, and moisturizers that are layered afterward on the skin. Such a cleanser would suffice for people with normal skin type. However, people with oily or combination skin and prone to acne need a cleanser that provides mild exfoliation, hydration and particularly should not worsen the existing acne.
[0003] Apart from clean and blemish free skin, one of the commonly perceived hallmarks of ideal skin is having a fair and brighter skin. To achieve a brighter skin tone, consumers have to resort to other skin brightening products, which are economically not sustainable and are also chemically burdensome to the skin. Though there are cleansing products in the market which claim to offer additional skin brightening advantages, still they are not efficient in offering the dual skin benefits of cleansing and brightening.
[0004] Therefore, there exists a need for an effective cleansing composition, which can rinse off impurities but also provide long lasting brightness and is also mild and suitable for acne prone sensitive skin.
SUMMARYOFTHEINVENTION
[0005] In an aspect of the present disclosure, there is provided a composition comprising: (a) at least one C12-C18 fatty acid; (b) at least one surfactant; (c) at least one opacifying agent; (d) at least one deposition agent; and (e) at least one humectant.

[0006] In another aspect of the present disclosure, there is provided a composition comprising: (a) at least one C12-C18 fatty acid; (b) at least one surfactant; (c) at least one opacifying agent in an amount ranging from 2 to 4.5% by weight relative to the total weight of the composition, preferably from 2.5 to 4 wt%, more preferably from 3 to 4 wt%; (d) at least one deposition agent in an amount ranging from 2 to 4% by weight relative to the total weight of the composition, preferably from 2.5 to 4 wt%, more preferably from 2.5 to 3.2 wt%; and (e) at least one humectant.
[0007] In yet another aspect of the present disclosure, there is provided a method for cleansing a keratin surface, such as skin, the method comprising: applying the composition as described herein, with water on the skin, followed by working the composition into a foam and rinsing off the composition.
[0008] In one another aspect of the present disclosure, there is provided a use of the composition as described herein, for cleansing and brightening a keratin surface. [0009] These and other features, aspects, and advantages of the present subject matter will be better understood with reference to the following description and appended claims. This summary is provided to introduce a selection of concepts in a simplified form. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
BRIEF DESCRIPTION OF DRAWINGS
[0010] The following drawings form a part of the present specification and are included to further illustrate aspects of the present disclosure. The disclosure may be better understood by reference to the drawings in combination with the detailed description of the specific embodiments presented herein.
[0011] Figure 1 illustrates the zein solubility test scores of the composition of the present disclosure (F(3)), in comparison with a control (sodium lauryl sulphate (SLS), and commercial cleansing product (CP(2)), in accordance with an embodiment of the present disclosure.

DETAILEDDESCRIPTIONOFTHEINVENTION
[0012] Those skilled in the art will be aware that the present disclosure is subject
to variations and modifications other than those specifically described. It is to be
understood that the present disclosure includes all such variations and
modifications. The disclosure also includes all such steps, features, compositions,
and compounds referred to or indicated in this specification, individually or
collectively, and any and all combinations of any or more of such steps or features.
Definitions
[0013] For convenience, before further description of the present disclosure, certain
terms employed in the specification, and examples are delineated here. These
definitions should be read in light of the remainder of the disclosure and understood
as by a person of skill in the art. The terms used herein have the meanings
recognized and known to those of skill in the art, however, for convenience and
completeness, particular terms and their meanings are set forth below.
[0014] The articles “a”, “an” and “the” are used to refer to one or to more than one
(i.e., to at least one) of the grammatical object of the article.
[0015] The terms “comprise” and “comprising” are used in the inclusive, open
sense, meaning that additional elements may be included. It is not intended to be
construed as “consists of only”.
[0016] The term "at least one" is used to mean one or more and thus includes
individual components as well as mixtures/combinations.
[0017] The term “about” is used to mean an acceptable error range for the particular
value as determined by one of ordinary skill in the art, which can depend in part on
how the value is measured or determined, i.e., the limitations of the measurement
system. For example, "about" can mean within 1 or more than 1 standard deviation,
per the practice in the art. Where particular values are described in the present
disclosure, unless otherwise stated the term "about" meaning within an acceptable
error range for the particular value should be assumed.
[0018] Throughout this specification, unless the context requires otherwise the
word “comprise”, and variations such as “comprises” and “comprising”, will be

understood to imply the inclusion of a stated element or step or group of element or steps but not the exclusion of any other element or step or group of element or steps. [0019] The term “including” is used to mean “including but not limited to”. “including” and “including but not limited to” are used interchangeably. [0020] The term “INCI” is an abbreviation of International Nomenclature of Cosmetic Ingredients, which is a system of names provided by the International Nomenclature Committee of the Personal Care Products Council to identify cosmetic or personal care ingredients.
[0021] The term “sulphate free composition” or “composition free of sulphates” as used herein means that the cleansing composition as disclosed herein is essentially free of any sulphate containing ingredients. In particular, “essentially free of any sulphate containing ingredients” means that the sulphate containing ingredients may be present in the composition in an amount of less than 1.0% by weight relative to the total weight of the composition, preferably less than 0.5% by weight, more preferably less than 0.1% by weight relative to the total weight of the composition. In an embodiment, the composition is completely free of sulphate.
[0022] The term “silicone free composition” or “composition free of silicones” as used herein means that the cleansing composition as disclosed herein is essentially free of any silicone containing ingredients. In particular, “essentially free of any silicone containing ingredients” means that the silicone containing ingredients may be present in the composition in an amount of less than 1.0% by weight relative to the total weight of the composition, preferably less than 0.5% by weight, more preferably less than 0.1% by weight relative to the total weight of the composition. In an embodiment, the composition is completely free of silicones.
[0023] All percentages, parts and ratios are based upon the total weight of the composition of the present disclosure unless otherwise indicated. Ratios, concentrations, amounts, and other numerical data may be presented herein in a range format. It is to be understood that such range format is used merely for convenience and brevity and should be interpreted flexibly to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-ranges encompassed within that range as if

each numerical value and sub-range is explicitly recited. For example, a weight percentage range of about 2 to 4 % should be interpreted to include not only the explicitly recited limits of about 2 % to about 4 %, but also to include sub-ranges, such as 2% to 3 %, 3 % to 4%, and so forth, as well as individual amounts, including fractional amounts, within the specified ranges, such as 2.84 %, and 3 %, for example.
[0024] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. Although any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the disclosure, the preferred methods and materials are now described. All publications mentioned herein are incorporated herein by reference.
[0025] The present disclosure is not to be limited in scope by the specific embodiments described herein, which are intended for the purposes of exemplification only. Functionally equivalent products, compositions, and methods are clearly within the scope of the disclosure, as described herein.
[0026] Embodiments herein provide a composition, preferably a foamable, rinse-off cleansing composition for cleansing and brightening a keratin surface. The disclosed embodiments include a composition, a method for cleansing a keratin surface, and use of the composition for cleansing and brightening a keratin surface. In various embodiments herein, the composition has improved cosmetic properties, which addresses the drawbacks of existing cleansing products. Generally, cleansing products which are high foaming may be harsh and non-suitable for acne prone skin due to the use of sulphate-based surfactants. Also, cleansing products claiming for additional skin benefits, such as skin brightening suffer from product stability. Hence, the composition according to embodiments herein is a sulphate and silicone free composition, which is high foaming, easy to rinse, mild and suitable for acne prone skin. Additionally, the composition provides instant and long-lasting oil control as well as brightening effect, leaving the skin soft, smooth, and nourished post use. The embodiments herein, further, include a method for the preparation of the cleansing composition.

Composition
[0027] Embodiments herein provide the composition for cleansing and brightening a keratin surface. The composition, according to an embodiment herein, is high foaming, mild, and easily rinsed off the keratin surface. Further, the composition, according to an embodiment herein offers enhanced benefits to the keratin surface, such as instant and long-lasting brightening, oil control, even skin tone, skin tone enhancement, and glow. In an embodiment, the composition comprises at least one C12-C18 fatty acid; at least one surfactant; at least one opacifying agent; at least one deposition agent; and at least one humectant. Particularly, there is provided a composition at least one C12-C18 fatty acid; at least one surfactant; at least one opacifying agent in an amount ranging from 2 to 4.5% by weight relative to the total weight of the composition, preferably from 2.5 to 4 wt%, more preferably from 3 to 4 wt%; at least one deposition agent in an amount ranging from 2 to 4% by weight relative to the total weight of the composition, preferably from 2.5 to 4 wt%, more preferably from 2.5 to 3.2 wt%; and at least one humectant. In other embodiments, the composition further includes at least one additive selected from a polymer, a suspending agent, a pH adjuster, a solvent, a chelating agent, a preservative, a fragrance, a cosmetic active, a colorant, or mixtures thereof.
[0028] In another embodiment, there is provided a composition comprising: (a) at least one C12-C18 fatty acid in an amount ranging from 0.5 to 22.5% by weight relative to the total weight of the composition; (b) at least one surfactant in a total amount ranging from 1.2 to 11% by weight relative to the total weight of the composition; (c) at least one opacifying agent in an amount ranging from 2 to 4.5% by weight relative to the total weight of the composition; (d) at least one deposition agent in an amount ranging from 2 to 4% by weight relative to the total weight of the composition; and (e) at least one humectant in an amount ranging from 5 to 20% by weight relative to the total weight of the composition.
[0029] In yet another embodiment, there is provided a composition comprising: (a) at least one C12-C18 fatty acid in an amount ranging from 0.5 to 22.5% by weight relative to the total weight of the composition, preferably from 0.5 to 20%, more

preferably from 1 to 18 wt %; (b) at least one surfactant in an amount ranging from 1.2 to 10.5% by weight relative to the total weight of the composition, preferably from 1.4 to 8 wt %, more preferably from 1.6 to 6 wt %; (c) at least one opacifying agent in an amount ranging from 2 to 4.5% by weight relative to the total weight of the composition, preferably from 2.5 to 4 wt %, more preferably from 3 to 4 wt %; (d) at least one deposition agent in an amount ranging from 2 to 4 wt % by weight relative to the total weight of the composition, preferably from 2.5 to 4 wt %, more preferably from 2.5 to 3.2 wt%; and (e) at least one humectant in an amount ranging from 5 to 20% by weight relative to the total weight of the composition, preferably from 5 to 18 wt %, more preferably from 6 to 17 wt%.
Fatty acid
[0030] The composition, according to embodiments herein, includes at least one
C12-C18 fatty acid, which upon saponification results in soaps and provides oil free
composition with cleansing properties and thereby aid in the removal of dirt, grease,
sebum from clogged pores of the skin. A single type of C12-C18 fatty acid, or two or
more different types of C12-C18 fatty acids may be used in combination. The fatty
acids may be linear or branched, saturated or unsaturated, cyclic, or acyclic.
Preferably the fatty acids are linear and saturated.
[0031] The fatty acid may be chosen in particular from C12-C18 fatty acids, and in
particular from lauric acid, myristic acid, stearic acid, palmitic acid, or mixtures
thereof.
[0032] The amount of C12-C18 fatty acids in the composition, according to
embodiments herein, may vary. The C12-C18 fatty acids, according to embodiments
herein, may be present in the composition in an amount ranging from 0.5 to 22.5%
by weight relative to the total weight of the composition, preferably from 0.5 to 20
wt %, more preferably from 1 to 18 wt %.
[0033] According to a preferred embodiment, the C12-C18 fatty acids is a
combination of lauric acid, myristic acid, and stearic acid, wherein lauric acid may
be present in the composition in an amount ranging from 6% to 10% by weight
relative to the total weight of the composition, preferably from 6 to 9 wt %, more
preferably from 7 to 9 wt %; myristic acid may be present in the composition in an

amount ranging from 5 to 11% by weight relative to the total weight of the composition, preferably from 6 to 10 wt %, more preferably from 8 to 10 wt %; and stearic acid may be present in the composition in an amount ranging from 0.5 to 1.5% by weight relative to the total weight of the composition, preferably from 0.7 to 1.5 wt %, more preferably from 0.8 to 1.2 wt %.
Surfactant
[0034] The composition, according to the present disclosure is a foamable cleansing
composition, and it comprises at least one surfactant that gives the foamable
characteristics to the composition. Two or more surfactants may be used. Thus, a
single type of surfactant or a combination of different types of surfactants may be
used.
[0035] Any sulphate and silicone free surfactant may be used for the present
disclosure. The surfactant may be selected from sulphate free anionic surfactants,
sulphate free non-ionic surfactants, sulphate free cationic surfactants, and sulphate
free amphoteric surfactants.
[0036] In other words, the composition of the present disclosure is essentially free
of sulphate-based surfactants.
[0037] The amount of surfactants in the composition, according to embodiments
herein, may vary. The surfactants, according to embodiments herein, may be
present in the composition in an amount ranging from 1.2 to 10.5% by weight
relative to the total weight of the composition, preferably from 1.4 to 8 wt %, more
preferably from 1.6 to 6 wt %.
[0038] The composition, according to embodiments herein includes at least one
surfactant, comprising a primary surfactant and a secondary surfactant.
Primary surfactant
[0039] The primary surfactant may in particular be chosen from anionic surfactants,
nonoinic surfactants, or combinations thereof.
[0040] The term “anionic surfactant” as used herein refers to a surfactant having
only anionic groups as ionic or ionizable groups.
[0041] In the present disclosure, an entity is qualified as "anionic" when it has at least one permanent negative charge or when it can be ionized by a negatively

charged entity, under the conditions of use of the composition of the present disclosure (medium, pH, for example) and containing no cationic charge.
[0042] The anionic surfactants may be chosen from acyl sarcosinates, acyl glutamates, and N-acyl taurates, salts of alkyl monoesters and alkyl glucoside, acyl lactylates, N-acyl glycinates, salts of D-galactoside-uronic acids, salts of alkyl ether carboxylic acids, alkyl aryl ether carboxylic acid salts, salts of alkyl amido ether carboxylic acids, the corresponding non-salt forms all of these compounds, or mixtures thereof.
[0043] According to embodiments herein, the primary surfactant is chosen from acyl sarcosinates, acyl glutamates, salts of alkyl monoesters and polyglycosidepolycarboxylic acids, or mixtures thereof.
[0044] According to embodiments herein, the primary surfactant may be a nonoinic
surfactant. The nonoinic surfactant may be chosen from an alkylpolyglucosides
such as decylglucosides, caprylyl/capryl glucosides, laurylglucoside,
cocoylglucoside, caprylylglucoside, and mixtures thereof.
[0045] According to preferred embodiments herein, the primary surfactant is chosen from sodium lauroyl sarcosinate, sodium cocoyl sarcosinate, sodium cocoyl glutamate, cocoglucoside (cocoyl glucoside), or mixtures thereof.
[0046] According to more preferred embodiments herein, the primary surfactant is an anionic surfactant, in particular sodium lauroyl sarcosinate.
[0047] The amount of primary surfactant in the composition, according to embodiments herein, may vary. The primary surfactant, according to embodiments herein, may be present in the composition in an amount ranging from 1.2 to 2.5% by weight relative to the total weight of the composition, preferably from 1.5 to 2.2%, more preferably from 1.5 to 2%. Secondary surfactant
[0048] The secondary surfactant may in particular be chosen from amphoteric surfactant.

[0049] The term “amphoteric surfactant” as used herein refers to a surfactant having both anionic groups and cationic groups as ionizable groups.
[0050] In the present disclosure, an entity is qualified as " amphoteric " when it has the ability to change between anionic properties, the isoelectric neutral stage, and the cationic properties, under the conditions of use of the compositionof the present disclosure (medium, pH, for example).
[0051] The amphoteric surfactants that may be chosen from optionally quaternized secondary or tertiary aliphatic amine derivatives, in which the aliphatic group is a linear or branched chain comprising from 8 to 22 carbon atoms, said amine derivatives containing at least one anionic group, for instance, a carboxylate, phosphate or phosphonate group.
[0052] According to embodiments herein, the secondary surfactant is an amphoteric surfactant chosen from (C8-C20)alkyl betaines, (C8-C20)alkyl amido(C1-C6)alkylbetaines, such as cocamidopropylbetaine, cocobetaine, lauryl betaine, or mixtures thereof.
[0053] According to embodiments herein, the secondary surfactant is an amphoteric surfactant such as an amine oxide or amido amine oxide selected from cocamido propyl amine oxide, lauramido propyl amine oxide, myristamido propyl amine oxide, or mixtures thereof.
[0054] According to preferred embodiments herein, the secondary surfactant is an amphoteric surfactant selected from cocamidopropyl betaine, cocobetaine, cocamido propyl amineoxide, lauramido propyl amine oxide, myristamido propyl amineoxide, lauryl betaine, or mixtures thereof.
[0055] According to more preferred embodiments herein, the amphoteric surfactant is an alkyl amido alkyl betaine, in particular cocamido propyl betaine.
[0056] The amount of secondary surfactant in the composition, according to embodiments herein, may vary. The secondary surfactant, according to embodiments herein, may be present in the composition in an amount ranging from

2 to 8% by weight relative to the total weight of the composition, preferably from
3 to 6wt%, more preferably from 4 to 5 wt %.
[0057] In a particular embodiment, the surfactant of the composition is a combination of sodium lauryl sarcosinate and cocamidopropyl betaine.
Opacifying agent
[0058] The composition, according to embodiments herein, includes one or more
opacifying agents. Opacifying agents as part of the composition provide skin
whitening effects upon deposition on the skin surface. Examples of opacifying
agents include but not limited to titanium dioxide, zinc oxide, magnesium oxide, or
mixtures thereof.
[0059] According to embodiments herein, the opacifying agent is titanium dioxide
with a primary particle size in the range of 0.10 µm to 0.30 µm.
[0060] According to preferred embodiments herein, the opacifying agent is titanium dioxide for example such as those of grade PF-671 with a primary particle size of 0.21 µm.
[0061] The amount of opacifying agent in the composition, according to embodiments herein, may vary. The opacifying agent, according to embodiments herein, may be present in the composition in an amount ranging from 2 to 4.5% by weight relative to the total weight of the composition, preferably from 2.5 to 4 wt %, more preferably from 3 to 4 wt %.
Deposition agent
[0062] The composition, according to embodiments herein, includes one or more
deposition agent. Deposition agents as part of the composition aid in the
accumulation of opacifying agents on the skin surface, and thereby provide skin
brightening effects. Examples of deposition agents include but not limited to
polybutene, starch, hectorite, or mixtures thereof.
[0063] According to preferred embodiments herein, the deposition agent is
polybutene.
[0064] The amount of deposition agent in the composition, according to embodiments herein, may vary. The deposition agent, according to embodiments

herein, may be present in the composition in an amount ranging from 2 to 4% by weight relative to the total weight of the composition, preferably from 2.5 to 4 wt %, more preferably from 2.5 to 3.2 wt %.
Humectants
[0065] The composition, according to embodiments herein, includes one or more humectants. Humectants, as part of the composition provides moisturizing and hydrating properties to the skin. Examples of humectants include but not limited to glycerin, propylene glycol, butylene glycol, pentylene glycol, or mixtures thereof. [0066] According to a particular embodiment, the humectants are glycerine and propylene glycol.
[0067] The amount of humectants in the composition, according to embodiments herein, may vary. The humectants, according to embodiments herein, may be present in the composition in an amount ranging from 5 to 20% by weight relative to the total weight of the composition, preferably from 5 to 18 wt %, more preferably from 6 to 17 wt %.
Other additives
[0068] The composition, according to embodiments herein, may also include one or more additives, particularly cosmetic additives, which may be notably chosen from a polymer, a suspending agent, a pH adjuster, a solvent, a chelating agent, a preservative, a fragrance, a cosmetic active, a colourant, or mixtures thereof. It is understood that a person skilled in the art will take care to select the optional additives and/or the amount thereof such that the advantageous properties of the composition used according to the disclosure are not or are not, adversely affected by the envisaged addition. All such embodiments including the optional additives are understood to be included within the scope of the present disclosure.
Polymer
[0069] The composition, according to embodiments herein, includes one or more polymers. Polymers as part of the composition provide smoothening effect to the skin. Examples of polymers include but not limited to hydroxy propyl methyl cellulose, xanthan gum, or mixtures thereof.

[0070] According to a preferred embodiment, the polymer is hydroxy propyl methyl cellulose.
[0071] The amount of polymer in the composition, according to embodiments herein, may vary. The polymer, according to embodiments herein, may be present in the composition in an amount ranging from 0.3 to 0.7% by weight relative to the total weight of the composition, preferably from 0.4 to 0.7 wt %, more preferably from 0.4 to 0.6 wt %.
Suspending agent
[0072] The composition, according to embodiments herein, includes one or more
suspending agents. Suspending agents as part of the composition ensures the
homogenous dispersion of the opacifying agent in the composition. Examples of
suspending agents include but not limited to acrylate copolymer, methylcellulose
(MC), sodium carboxymethylcellulose (CMC), or mixtures thereof.
[0073] According to a preferred embodiment, the suspending agent is acrylate
copolymer, for example, those sold under the reference Carbopol ® Aqua SF-1
polymer.
[0074] The amount of suspending agent in the composition, according to embodiments herein, may vary. The suspending agent, according to embodiments herein, may be present in the composition in an amount ranging from 2.5 to 3.5% by weight relative to the total weight of the composition, preferably from 2.6 to 3.2 wt %, more preferably from 2.7 to 3 wt %.
pH adjuster
[0075] The composition, according to embodiments herein, includes one or more pH adjusters. pH adjusters as part of the composition maintain the pH in the range of 7.6 to 8.8, preferably in a range of 7.8 to 8.5, more preferably in a range of 8 to 8.4. Examples of pH adjusters include but not limited to ammonium hydroxide, alkali metal carbonates, alkali metal hydroxides such as sodium or potassium hydroxide, alkanolamines such as mono-, di- and triethanolamines and also their derivatives.

[0076] According to preferred embodiments herein, the pH adjuster is selected from potassium hydroxide, sodium hydroxide, triethanolamine, or mixtures thereof.
[0077] According to more preferred embodiments herein, the pH adjuster is potassium hydroxide.
[0078] The amount of pH adjuster in the composition, according to embodiments herein, may vary. The pH adjuster, according to embodiments herein, may be present in the composition in an amount ranging from 3.5 to 6% by weight, preferably from 4 to 5.5 wt %, more preferably from 4.5 to 5 wt % by weight relative to the total weight of the composition.
Solvent
[0079] The composition, according to embodiments herein, includes one or more
solvents, which are used to dissolve and suspend the other components of the
composition.
[0080] According to a preferred embodiment, the solvent is water.
[0081] The amount of solvent in the composition, according to embodiments herein, may vary. The solvent, according to embodiments herein, may be present in the composition in an amount ranging from 35 to 55% by weight relative to the total weight of the composition, preferably from 40 to 50 wt %, more preferably from 42 to 45 wt %.
Chelating agent
[0082] The composition, according to embodiments herein, includes one or more
chelating agents, which are used to sequester metal ions or metallic compounds and
thereby prevents contamination or discoloration of the composition. Also, chelating
agents improve the efficacy of preservatives in the composition and helps to
maintain the stability of the composition. Examples of chelating agents include but
not limited to tetrasodium glutamate diacetate, disodium ethylene diamine
tetraacetic acid, or mixtures thereof.
[0083] According to a preferred embodiment, the chelating agent is tetrasodium
glutamate diacetate.

[0084] The amount of chelating agent in the composition, according to embodiments herein, may vary. The chelating agent, according to embodiments herein, may be present in the composition in an amount ranging from 0.2 to 0.6% by weight relative to the total weight of the composition, preferably from 0.3 to 0.6 wt %, more preferably from 0.3 to 0.5 wt %.
Preservative
[0085] The composition, according to embodiments herein, includes one or more
preservatives, which are used to protect the composition from microbial
contamination and/or any associated degradation of the composition.
[0086] Examples of preservatives include but not limited to phenoxy ethanol,
caprylyl glycol, parabens, methyl isothiazolinone, benzisothiazolinone, methyl
chloro isothiazolinone, benzyl alcohol, salicylic acid, sorbic acid, sodium benzoate,
potassium sorbate, or mixtures thereof.
[0087] According to a preferred embodiment, the preservative is phenoxy ethanol and caprylyl glycol.
[0088] The amount of preservative in the composition, according to embodiments herein, may vary. The preservative, according to embodiments herein, may be present in the composition in an amount ranging from 0.1 to 2% by weight relative to the total weight of the composition, preferably from 0.3 to 1.5 wt %, more preferably from 0.3 to 1 wt %.
Fragrance
[0089] The composition, according to embodiments herein, includes one or more
fragrance, which are used to impart a pleasant flavor to the composition and masks
any undesirable odour that may arise from the other ingredients of the composition.
Further, fragrances impart a pleasant sensory perception to the user while using the
composition.
[0090] According to a preferred embodiment, the fragrance is a mixture of essential
oils.
[0091] The amount of fragrance in the composition, according to embodiments herein, may vary. The fragrance, according to embodiments herein, may be present

in the composition in an amount ranging from 0.4 to 0.8% by weight relative to the total weight of the composition, preferably from 0.5 to 0.8 wt %.
Cosmetic active
[0092] The composition, according to embodiments herein, includes one or more
cosmetic actives, which are used to impart a pleasant feeling and enhance the
overall cosmetic properties as part of the composition. Examples of cosmetic
actives include but not limited to ascorbyl glucoside, vitamin C acetate,
niacinamide, vitamin A derivatives, hyaluronic acid, alpha hydroxy acid, beta
hydroxy acid, poly hydroxy acid, or mixtures thereof.
[0093] According to a preferred embodiment, the cosmetic active is ascorbyl
glucoside.
[0094] The amount of cosmetic active in the composition, according to embodiments herein, may vary. The cosmetic active according to embodiments herein, may be present in the composition in an amount ranging from 0.005 to 0.02% by weight relative to the total weight of the composition, preferably from 0.008 to 0.02 wt %.
Colourants
[0095] The composition, according to embodiments herein, includes one or more
colourants, which is used to impart a visual appeal as part of the composition.
Examples of colourants include but not limited to CI 14700 (Ponceau SX), CI 16035
(Allura Red Ac), CI 47000 (Quinoline Yellow SS), CI 47005 (Quinoline Yellow
WS), CI 15985 (Sunset Yellow FCF), CI 17200 (Fast Acid Magenta), CI 42090
(Brilliant Blue FCF), CI 19140 (5 Tartrazine), CI 45410 (Phloxine BK), CI 26100
(Sudan III), CI 61570 (Alizarine Cyanine), CI 45380 (Eosine YS), or mixtures
thereof.
[0096] According to a preferred embodiment, the colourant is CI 14700 (Ponceau
SX).
[0097] The amount of colourant in the composition, according to embodiments herein, may vary. The colourant, according to embodiments herein, may be present

in the composition in an amount ranging from 0.0005 to 0.002% by weight relative to the total weight of the composition, preferably from 0.0001 to 0.002 wt %.
Preparation of the compositions according to the disclosure
[0098] The compositions according to the disclosure may be manufactured using known processes, used in the cosmetics or dermatology field. Typically, the process includes blending one or more humectants, deposition agent and polymer at room temperature to obtain the first mixture. The opacifying agent was pre-dispersed in one or more humectants and added to the main vessel along with the first mixture, a preservative, and a suspending agent. The ingredients in the main vessel were homogenized at about 1500 rpm for about 15 minutes at about 75 ℃ to obtain the second mixture. Fatty acids were added to the second mixture and was allowed for complete melting and mixing, followed by the addition of water and pH adjuster at about 75 ℃ to obtain third mixture. The third mixture was allowed to cool down to about 55 ℃ to aid the addition and mixing of surfactants to obtain the fourth mixture. Cosmetic actives and other preferred additives were added to the fourth mixture at about 30 ℃ and were allowed to blend resulting in the homogenous composition.
Form
[0099] It is preferable that the composition according to the present disclosure be in the form of a liquid at 25°C and under atmospheric pressure (760 mmHg). The pH of the composition according to the present disclosure may be basic. For example, the pH of the composition according to the present disclosure is in a range of 7.6 to 8.8, preferably in a range of 7.8 to 8.5, more preferably in a range of 8 to 8.4. The composition according to the present disclosure may be in any form such as a liquid, solution, dispersion, foam, solid, semi solid, gel, liquid gel, lotion, or cream. In a preferable embodiment, the composition is in the form of a liquid.
[0100] The composition according to the present disclosure may be a cleansing composition. Thus, the cleansing composition according to the present disclosure may be intended for application onto a keratin surface.

[0101] The term “keratin surface” herein refers to the most-surface level portion of the human epidermis containing keratin as a main constituent element, and examples thereof include the skin, scalp, nails, lips, hair, and the like. Thus, it is preferable that the cleansing composition according to the present disclosure be used for a cosmetic process for the keratin surface, in particular the skin.
[0102] The composition according to the present disclosure may preferably be a rinse-off composition. The rinse-off composition can be removed from a keratin surface such as skin, preferably with water.
[0103] The composition according to the present disclosure may preferably be a foamable cleansing composition. The foamable cleansing composition can remove dirt, sebum and/or makeup on a keratin surface such as skin from the keratin surface.
[0104] The composition according to the present disclosure may preferably be a foamable rinse-off cleansing composition. The foamable rinse-off cleansing composition can remove dirt, sebum and/or makeup on a keratin surface such as skin, and can be removed from the keratin surface, preferably with water.
Use and method
[0105] A composition, according to embodiments herein, may more particularly be a composition for cleansing keratin surfaces, such as the human skin. Preferably, the composition, according to embodiments herein, is a composition for cleansing and brightening the skin. Accordingly, the composition, in various embodiments herein, may be a face wash, a cleansing serum, make up remover, cleansing milk, facial cleansing scrubs, facial clay masks, skin cleansing balms, micellar, or a liquid cleanser. In a preferable embodiment, the composition is a liquid cleanser. The composition, according to embodiments herein, can be applied preferably with water on the skin, followed by working the composition into a foam and rinsing off the composition.
[0106] It is possible that the composition according to the present disclosure be left on the keratin surface for a certain period of time such as some minutes after being

applied onto the keratin surface and before rinsing off to enhance the desired skin benefits.
[0107] Although the present disclosure has been described in considerable detail with reference to certain embodiments and implementations thereof, other embodiments are possible to cover the modifications and variations of the present disclosure.
Examples
[0108] The disclosure will now be illustrated with working examples, which is intended to illustrate the working of disclosure and not intended to take restrictively to imply any limitations on the scope of the present disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood to one of ordinary skill in the art to which this disclosure belongs. Although methods and materials similar or equivalent to those described herein can be used in the practice of the disclosed methods and compositions, the exemplary methods, devices, and materials are described herein. It is to be understood that this disclosure is not limited to particular methods, and experimental conditions described, as such methods and conditions may apply.
[0109] Ingredient amounts are indicated in the following examples in active material weight percentages.
Measurement and Evaluation Methods
[0110] Each of the compositions F (1) to F (10) as prepared in the ensuing Examples 1 and 2 were evaluated for their stability characteristics, titanium dioxide deposition, and sensorial aspects.
Evaluation of stability
[0111] The stability of the compositions was evaluated by placing the compositions at various temperatures in a range from 4°C to 60°C, such as 4°C, 25 °C, 37 °C, and 45 °C for a period of 2 months. The observation of phase separation and any change in appearance of the compositions were verified.

Measurement of viscosity
[0112] The viscosity of the compositions was measured at 25°C and atmospheric pressure using a Rheomat RM180® apparatus with M4 spindle.
Evaluation of titanium dioxide deposition
[0113] The in vitro deposition of titanium dioxide was evaluated by quantification using Inductively coupled plasma mass spectrometry (ICP-MS), which allowed detection of titanium at μg/kg level. The protocol for titanium quantification is as described in the technical report of ISO, ”Cosmetics Analytical approach for screening and quantification methods for heavy metals in cosmetics, ISO/TR 17276:2014(E)”.
Evaluation of foam stability
[0114] The foam stability and texture of the compositions were evaluated using the following protocol.
[0115] A test solution was prepared by diluting 15g of the composition in 60g of hard water under gentle stirring. The test solution was then poured into the vessel of the Dynamic Foam Analyzer (DFA 100) equipment, followed by gas injection to generate foam.
Sensory evaluation
Qualitative consumer test
[0116] Test protocol: 16 human volunteers, aged 16-35 years were involved in the 7-day placement comprising 3 interactions, to assess the sensory aspects, such as skin brightening, shine control and skin respect of compositions according to the disclosure and commercial products.
Quantitative consumer test
[0117] Test protocol: Human volunteers aged 18-35 years with fair to dark skin tone were placed on a monadic test involving 7 days home use of the compositions, in order to assess the sensory aspects, such as skin brightening, shine control and skin respect of compositions according to the disclosure and commercial products.

Example 1
Product evaluation
[0118] Cleansing compositions F(1) to F(4) in accordance with the present disclosure as well as comparative compositions F(5) to F(10) provided in Table 1 were prepared as described below.
[0119] The process involved blending ingredients of phase A1 at room temperature to obtain the first mixture. The ingredients of phase A2 were added to the main vessel along with the first mixture. The ingredients in the main vessel were homogenized at about 1500 rpm for about 15 minutes at about 75 °C to obtain the second mixture. The ingredients of phase A3 were added to the second mixture and allowed for complete melting and mixing, followed by the addition of phase B ingredients at about 75 °C to obtain third mixture. The third mixture was allowed to cool down to about 55 °C to aid the addition and mixing of phase C ingredients to obtain the fourth mixture. Phase D ingredients along with other preferred additives were added to the fourth mixture at about 30 °C and allowed to blend resulting in the homogenous composition.
Results
[0120] The results obtained with compositions F(1) to F(10) with respect to product stability, viscosity, pH, and foaming characteristics are described in detail below.
I. Stability
[0121] Compositions F(1) to F(4) prepared according to the present disclosure were found to be stable. Comparative compositions F(5) to F(8) were also stable. Comparative composition F (9) was unstable with phase separation, which could be attributed to the altered weight percentage of stearic acid and polymer. Comparative composition F(10) was unstable and stringy in texture, which is attributed to the higher weight percentage of humectants and altered composition of fatty acids, specifically the weight percentage of myristic acid and stearic acid were outside the desired weight percentage range each of myristic acid and stearic acid, respectively.
II. Viscosity

[0122] The viscosity of compositions F(1) to F(10) was measured according to the protocol described above. The results are described in detail in Table 1 below.
[0123] Compositions F(1) to F(4) prepared according to the present disclosure, and comparative compositions F (5) to F (9) exhibited desirable viscosity in the range of 1000 to 6000 cps (1 to 6 Pa s), whereas the comparative composition F(10) was highly viscous and stringy in texture with a viscosity of about 18870cps, due to the higher weight percentage of humectants compared to the other compositions.
III. pH
[0124] The pH of compositions F(1) to F(10) was measured according to the protocol commonly used in the art. The results are described in detail in Table 1 below.
[0125] The pH of the working compositions F(1) to F(4) and comparative compositions F(5) to F(8) were within the disclosed pH range. The pH of the comparative composition F(9) and F(10) was 8.9 and 9.03, which was beyond the desired range of pH, which is attributed to the altered weight percentage of humectants and fatty acids in the composition. Specifically, in the composition F(10) the individual weight percentage of propylene glycol, a weakly basic humectant is higher than the working compositions and hence contributed to the increase in pH of the composition F(10).
[0126] Thus, the compositions F(1) to F(4) prepared according to the present disclosure exhibited desired pH, stability, foaming characteristics, and viscosity, which is attributed to the presence of essential ingredients, such as fatty acids, humectants, and surfactants in desired weight percentages. Comparative compositions F(5) to F(7) were also stable and foamed well owing to the presence of essential ingredients, such as fatty acids, humectants, and surfactants in desired weight percentages. However, comparative compositions F(5) to F(7) were expected to lack in brightening effect owing to the altered weight percentage of opacifying agent and the deposition agent, which is evaluated in detail in Example 2. The comparative composition F(8) although was stable and foamed well,

exhibited a drying effect due to the altered combination of fatty acids. Comparative compositions F(9) and F(10) were unstable due to undesirable pH and/or viscosity and altered weight percentages of the components.
[0127] Accordingly, it can be understood that the use of specific ingredients in specific weight percentage as disclosed in various embodiments herein facilitated in achieving the cleansing composition with desired physical properties and any deviation in the components or weight ranges resulted in unstable, undesired compositions.
Table 1

Ph as e
A3 Funct
ion
Of
Ingre
dients Ingredi ents (INCI Name) Content (% By Weight Relative To The Total Weight Of The Composition)

F (1) F (2) F (3) F (4) F (5) F(6) F (7) F(8) F(9) F(10)

Fatty Acid Myristi c acid 9 9 9 9 9 9 9 2 9 4

Lauric acid 8 8 8 8 8 8 8 9 8 6

Stearic Acid 1 1 1 1 1 1 1 2 4 6

Palmiti c acid / / / / / / / 3 / 6

Prima Sodium
C
A2 A1
A1 ry
Surfac
tant lauroyl sarcosi nate 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8

Secon dary Surfac tant Cocami doprop yl betaine 4.18 4.18 4.18 4.1 8 4.1 8 4.18 4.18 3.8 4.18 3.8

Opaci
fying
Agent Titaniu
m
dioxide 3.5 3.5 3.5 4 / 3.5 1 3 3.5 3

Depos
ition
Agent Polybut ene 2.95 2.95 2.95 3 / / 3 2.95 2.95 2.95

Hume ctant Glyceri n 8 8 8 8 8 8 8 5 8 12

Propyle
ne
glycol 7 7 7 7 7 7 7 5 5 10

Pentyle
ne
glycol / 1.5 1.5 / / / / 0.2 1.5 0

Hydrox
A1 Polym er ypropyl methyl 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.3 0.8 0.7

cellulos e

Suspe Acrylat es
copoly mer
A2 nding Agent
2.85 2.85 2.85 / / 2.85 / 2.85 2.85 /

Alkali Potassi
B / Ph
Adjust
er um
hydroxi
de 4.6 4.6 4.6 4.6 4.6 4.6 4.6 4.05 5.3 4.9

Solve nt Qs 100 Qs Qs Qs Qs Qs Qs Qs Qs Qs
B
Water
100 100 10 0 10 0 100 100 100 100 100

Tetraso
D Chelat ing dium
glutam
ate
diacetat
e 0.4 0.4 / 0.4 0.4 0.4 0.4 0.4 0.4 0
Agent

Phenox
yethano 0.6 / / 0.6 0.6 0.6 0.6 0 0 0.1
A2 Preser vative l/

Capryl
yl 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.2 0.3 0
D glycol

Fragra nce Fragran ce 0.7 0.7 0.5 0.7 0.7 0.7 0.7 0.5 0.7 0.5

Cosm Ascorb
D etic yl glucosi 0.01 0.01 0.01 0.0 1 0.0 1 0.01 0.01 0.01 0.01 0.01
D active de

Colou rant Red 4/ Ci 4700 0.001 503 / / 0.0 01 5 / 0.00 150 3 0.00 15 0 0 0
pH 8.21 8.21 8.21 8.3 8.2 1 8.3 8.21 8.53 8.9 9.06
Viscosi ty(cps) 2670 271 0 278 5 26 90 27 10 244 2 2730 4335 3020 18870

Stabl
Stabilit Stable Sta Stab Sta Sta Stab Stab e &
Dryi
ng Unst Unsta ble And
Product y
ble le ble ble le le Effe able

Evaluation ct
On
Skin String y
Foam
Stabilit
y Foam s well Foa ms wel l Foa ms wel l Fo am s Fo
a
ms Foa
ms
well Foa
ms
well Foa
ms
well - -

we ll we ll
Example 2
Titanium dioxide Deposition
[0128] The ability of the compositions to deposit titanium dioxide on the keratin surface was substantiated by in vitro quantification of the titanium content in compositions using the protocol as described earlier.
Results
[0129] The composition F(6) with TiO2 in the desired weight percentage but due to the absence of a deposition agent resulted in low titanium deposition when compared to the working compositions (F(1) and F(4)) and even lower than the composition F(7) comprising 1% TiO2 with a deposition agent. CP(1), a cleansing and brightening product available in the consumer market comprising 0.5% TiO2 as a brightening active but does not include any deposition agent, exhibited the lowest deposition of titanium. It can be concluded from Table 2 that the compositions F(1) and F(4) with TiO2 in the disclosed weight percentage along with the presence of a deposition agent aided the deposition of titanium on the keratin surface and for achieving the desired sensorial benefits such as instant and long-lasting brightening.
Table 2

S.No. Composition Composition Details Amount of titanium deposited (ppm)
1 F(1) 3.5% TiO2 69.02
2 F(4) 4% TiO2 71.32
3 F(6) 3.5% TiO2, without deposition agent 48.1
4 F(7) 1% TiO2 51.39

5 CP(1) 0.5% TiO2, without deposition agent 41.34
Example 3
Sensorial evaluation
[0130] Selected working compositions were evaluated with respect to various sensorial aspects, such as instant brightening, shine control and skin respect in comparison with selected commercial products.
I. Instant brightening
[0131] Instant brightening effect provided by the compositions were assessed using a combination of an instrumental test, a qualitative consumer test, and a quantitative consumer test.
Instant brightening: Instrumental test
[0132] About 18 healthy human volunteers with medium to dark skin tones were recruited for the instrumental test to assess skin brightening effects. Before and after chromasphere assessments, were carried out on volunteer’s cheek with a controlled product application and standard conditions.
[0133] Cleansing products tested: Compositions F(1), F(2), and commercial skin brightening, and cleansing product CP(2).
[0134] Protocol for Chromasphere® measurement:
1) The volunteers were instructed to wash their face with water and leave for acclimatization in standard condition (Temperature :21±1 ℃; RH: 45±5%) for 30mins.
2) T-0 baseline measurement was obtained on Chromasphere; with cheek as the zone of assessment.
3) Product was applied as per randomization using standard protocol.
4) Volunteers were instructed to wait in standard condition for 10 min for the product to settle.

5) T-imm measurement was obtained on Chromasphere.
6) The volunteers were instructed to wait in standard conditions for next 2 hrs and T-2hour measurement was obtained on Chromasphere.
Results
[0135] The difference in skin lightening from T0 base line measurement and respective time point post application of the product is represented as a ∆L value. The ∆L values obtained for F(1), F(2), and the commercial product CP(2) is summarized in table 3.
Table 3

Time point T-imm T-2hour
F(1) 0.60 0.62
F(2) 0.75 0.50
CP(2) 0.42 0.45
[0136] The cleansing compositions according to the present disclosure, namely F(1) and F(2) exhibited superior instant brightening effect (T-imm) as illustrated by their ∆L values 0.60 and 0.75 respectively. Further, the compositions exhibited long lasting brightness even up to 2 hours when compared to CP(2).
Instant brightening: Qualitative consumer test
[0137] The composition F(2) according to the present disclosure and a commercial facial cleanser product (CP(2)) were qualitatively evaluated for their instant brightening effect on the human skin, based on the protocol as described earlier.
[0138] All volunteers were instructed to assess the skin brightening and anti-dullness feel on their skin post the treatment with the cleansing products for two times a day over a period of 7 days.

Results
[0139] An immediate brightening effect was appreciated by majority of the volunteers. The volunteers reported that the composition F(2) brighten the skin for around 2 tone or 50-80% from before washing the face. The instant brightening effect was visible, and more visible than the commercial product CP(2) .
[0140] After 7 days of using the cleansing products, majority of the volunteers (about 81% of volunteers) reported a gradual increase in skin brightening by the composition F(2) when compared to the commercial products.
Instant brightening : Quantitative consumer test
[0141] The composition F(1) according to the present disclosure and a commercial facial cleanser product CP(2) were quantitatively evaluated for their instant brightening effect on the human skin, based on the protocol as described earlier.
Results
[0142] 94% of volunteers reported instant brightness after using the product.
[0143] Thus, the compositions F(1) and F(2) according to the present disclosure comprising a combination of mixed base formula i.e., fatty acids (soaps) and surfactants based, that deposited titanium dioxide along with the help of a deposition aid provided instant as well as long lasting skin brightening effects. Also, the composition F(2) comprising milder sulfate free surfactants, with humectant content of 15%, and with an optimized pH of 8 foamed well and offered a non-drying feel on skin post use.
II. Shine and Oil Control
[0144] Shine and oil control effect provided by the compositions were assessed using a combination of an instrumental test, a qualitative consumer test, and a quantitative consumer test.
Shine and oil control: Instrumental test
[0145] 20 healthy human volunteers with oily skin were recruited for the instrumental test to assess shine and oil control effects. Skin gloss shine

measurements were made using Lightcam before and after product application, in controlled conditions.
[0146] Cleansing products tested: 500mg/half face of Compositions F(1), F(2), F(4) and commercial skin brightening, cleansing products: CP(2) and negative control (a reference for reliability of the test results).
[0147] Protocol for Lightcam measurement:
1) The volunteers were instructed to wash their face with water and leave for acclimatization in standard condition (Temperature :21±1 °C; RH: 45±5%) for 30mins.
2) T-0 baseline measurement was obtained on Lightcam; with cheek and forehead as the zone of assessment.
3) Product was applied as per randomization using standard protocol.
4) Volunteers were instructed to wait in standard condition for 10 min for the product to settle.
5) T-imm measurement was obtained on Lightcam.
6) The volunteers were instructed to wait in standard conditions for next 4 hrs and subsequent measurements such as T-30 min, T-1hour, and T-2hour were carried out.
Results
[0148] The reduction in gloss shine value from T0 base line measurement and respective time point post application of the product is represented as a A value. The A values obtained for F(1), F(2), F(4), the commercial product CP(2) and negative control is summarized in Table 4.
Table 4

Time point T-imm T-30 min T-1hour T-2hour
F(1) -3.84 -4.73 -4.20 -3.47
F(2) -4.14 -4.85 -3.99 -3.23

CP(2) -3.68 -3.59 -3.37 -2.86
Negative Control -1.57 -1.04 -0.70 -0.07
[0149] The cleansing compositions according to the present disclosure, namely F(1) and F(2) exhibited superior gloss shine control effects as illustrated by their ∆ values -4.73 and -4.85 respectively, when compared to the commercial product CP(2) with a ∆ value of -3.59. Further, the compositions exhibited long lasting shine and oil control effects even up to 2 hours when compared to CP(2). Compositions F(1), and F(2) showed significant oil control effects.
Shine and oil control: Quantitative consumer test
[0150] The composition F(1) according to the present disclosure and a commercial facial cleanser product CP(2) were quantitatively evaluated for their shine control effects on the human skin.
Results
[0151] 85% of volunteers reported effective oil control with composition F(1) and also particularly emphasized that F(1) did not cause / increase acne post usage and is comparable to the oil control performance of CP (2).
[0152] Thus, the compositions F(1) and F(2) according to the present disclosure comprising a combination of optimized ratio of fatty acids of different chain length, along with the mild surfactants cocktail, offered a deep yet gentle cleansing experience while providing an oil control / shine control benefits.
III. Skin Respect
[0153] Skin respect, or the mildness provided by the compositions were assessed using a combination of zein solubility test, a qualitative consumer test, and a quantitative consumer test.
Zein solubility test

[0154] The harshness of surfactants used in the composition was evaluated by employing the zein solubility test wherein zein, a yellow corn protein, similar to keratin present in the skin, with limited solubility in water is denatured (solubilized) by the surfactant. The ability of surfactants to denature and solubilize zein has been linked to their skin-mildness potential. The soluble zein protein was measured by modified lowry method using spectrophotometer. The absorption is correlated with the solubility of the zein protein, which in turn is considered as a measure of the irritation potential or the harshness of the composition.
[0155] Protocol: Briefly, each of the composition to be assessed (F(3) or CP(2)) were mixed with zein protein solution and incubated for 45 minutes, during which the zein protein is solubilized by the surfactants in the compositions. Sodium lauryl sulphate(SLS) was used as the positive control to observe 100% denaturation of zein protein and therefore, its solubility.
Results
[0156] As illustrated in Figure 1, F(3) exhibited a zein score of 55.72%, whereas the commercial product CP(2) exhibited a zein score of 75.76%. This showed that F(3) comprised only mild surfactants when compared to CP(2) and hence, accounted for a lower denaturation of zein protein. Hence, the composition F(3) according to the present disclosure was milder on the human skin.
Skin respect: Qualitative consumer test
[0157] The composition F(2) according to the present disclosure and a commercial facial cleanser product (CP(2)) were qualitatively evaluated for their skin respect or skin mildness.
[0158] All volunteers were instructed to assess the skin brightening and anti-dullness feel on their skin post the treatment with the cleansing products for two times a day over a period of 7 days.
Results

[0159] Majority of the volunteers (69% (about 56 to 75%)) reported no discomfort or allergic reaction when using F(2) and also reported that F(2) was gentle on their skin.
Skin respect: Quantitative consumer test
[0160] The composition F(1) according to the present disclosure and a commercial facial cleanser product CP(2) were quantitatively evaluated for their skin mildness effects.
[0161] 124 volunteers assessed the composition F(1), and 126 volunteers assessed the commercial product CP(2) for its shine control effects on the skin.
Results
[0162] 98% of volunteers reported that the composition F(1) was mild on their skin 92% of volunteers confirmed that there was no dry up of skin after cleansing and 89% of volunteers reported that the composition did not cause/increase can post use. Also, it was emphasized that F(1) did not dry up the skin post usage, when compared to CP(2).
[0163] Thus, the compositions F(1), F(2), F(3), and F(4) according to the present disclosure comprising a combination of optimized ratio of fatty acids of different chain length, along with the mild surfactants cocktail and an optimized pH is mild on the skin. Further, the use of 0.5% polymer offered a non-drying feel on skin post wash.
[0164] Accordingly, it could be observed that the use of specific ingredients as disclosed in various embodiments herein facilitated in achieving the cleansing composition with desired sensorial properties.
Advantages of the present disclosure
[0165] The present disclosure provides a composition for cleansing and brightening of keratin surfaces, in particular the skin comprising essentially at least one C12-C18 fatty acid; at least one surfactant; at least one opacifying agent; at least one deposition agent; and at least one humectant. The composition comprising unique

fatty acid composition of different chain length along with mild anionic, and amphoteric surfactants, delivers a stable composition across all temperatures (4°C to 60°C) with a desired pH in the range of 7.6 to 8.8, and is also free of sulphates and silicones. Further, the optimized level of humectants along with polymers such as natural cellulose and its derivatives, acrylate copolymer in combination with pigments such as titanium dioxide, offers user perceived benefits as listed below.
a) The composition has a desirable texture, specifically a serum like fluidic texture, which is easy to spread.
b) The composition is foamable and ensures deep pore cleaning.
c) The use of sulphate and silicone free surfactant system ensures mild cleansing and easily rinses-off the skin.
d) The composition is suitable for acne prone skin and doesn’t aggravate acne.
e) The composition provides instant and long-lasting skin brightness.
f) The composition provides instant and long-lasting oil control.
g) The composition provides skin benefits, such as soft and supple skin, non-drying feel, glow, even skin tone, reduction of acne etc., and thereby enhances overall skin tone.
h) The composition also enhances the skin tone and brightness without any patchy or dry skin feel.

I/We Claim:
1. A composition comprising:
(a) at least one C12-C18 fatty acid;
(b) at least one surfactant;
(c) at least one opacifying agent in an amount ranging from 2 to 4.5% by weight relative to the total weight of the composition, preferably from 2.5 to 4 wt%, more preferably from 3 to 4 wt%;
(d) at least one deposition agent in an amount ranging from 2 to 4% by weight relative to the total weight of the composition, preferably from 2.5 to 4 wt%, more preferably from 2.5 to 3.2 wt%; and
(e) at least one humectant.
2. The composition as claimed in claim 1, wherein the composition further
comprises at least one additive selected from a polymer, a suspending agent, a pH adjuster, a solvent, a chelating agent, a preservative, a fragrance, a cosmetic active, a colorant, or mixtures thereof.
3. The composition as claimed in claim 1, wherein the composition has pH in a
range of 7.6 to 8.8, preferably in a range of 7.8 to 8.5, more preferably in a range of 8 to 8.4.
4. The composition as claimed in claim 1, wherein the C12-C18 fatty acid is selected
from lauric acid, myristic acid, palmitic acid, stearic acid, or mixtures thereof in an amount ranging from 0.5 to 22.5% by weight relative to the total weight of the composition, preferably from 0.5 to 20 wt%, more preferably from 1 to 18 wt%.
5. The composition as claimed in claim 4, wherein lauric acid is in an amount
ranging from 6% to 10% by weight relative to the total weight of the composition, preferably from 6 to 9 wt %, more preferably from 7 to 9 wt %;

myristic acid is in an amount ranging from 5% to 11% by weight relative to the total weight of the composition, preferably from 6 to 10 wt %, more preferably from 8 to 10 wt %; and stearic acid is in an amount ranging from 0.5% to 1.5% by weight relative to the total weight of the composition, preferably from 0.7 to 1.5%, more preferably from 0.8 to 1.2%.
6. The composition as claimed in claim 1, wherein the surfactant comprises a
primary surfactant in an amount ranging from 1.2 to 2.5% by weight relative to the total weight of the composition, preferably from 1.5 to 2.2 wt %, more preferably from 1.5 to 2 wt %; and a secondary surfactant in an amount ranging from 2 to 8% by weight relative to the total weight of the composition, preferably from 3 to 6 wt %, more preferably from 4 to 5 wt %.
7. The composition as claimed in claim 6, wherein the primary surfactant is selected
from sodium lauroyl sarcosinate, sodium cocoyl sarcosinate, sodium cocoyl glutamate, coco glucoside, or mixtures thereof; and the secondary surfactant is selected from cocamidopropyl betaine, cocobetaine, cocamidopropylamine oxide, lauramidopropylamine oxide, myristamidopropylamine oxide, lauryl betaine, or mixtures thereof.
8. The composition as claimed in claim 1, wherein the at least one opacifying agent
is selected from titanium dioxide, zinc oxide, magnesium oxide, or mixtures thereof.
9. The composition as claimed in claim 1, wherein the at least one deposition agent
is selected from polybutene, starch, hectorite, or mixtures thereof.
10. The composition as claimed in claim 1, wherein the at least one humectant is
selected from glycerin, propylene glycol, butylene glycol, pentylene glycol, or mixtures thereof in an amount ranging from 5 to 20% by weight relative to the total weight of the composition, preferably from 5 to 18 wt%, more preferably from 6 to 17 wt%.

11. The composition as claimed in claim 2, wherein the polymer is selected from
hydroxy propyl methyl cellulose, xanthan gum, or mixtures thereof in an amount ranging from 0.3 to 0.7% by weight relative to the total weight of the composition, preferably from 0.4 to 0.7 wt%, more preferably from 0.4 to 0.6 wt%.
12. The composition as claimed in claim 2, wherein the suspending agent is selected
from acrylate copolymer, methylcellulose (MC), sodium
carboxymethylcellulose (CMC), or mixtures thereof in an amount ranging from 2.5 to 3.5% by weight relative to the total weight of the composition, preferably from 2.6 to 3.2 wt%, more preferably from 2.7 to 3 wt%.
13. The composition as claimed in claim 2, wherein the pH adjuster is selected from
potassium hydroxide, sodium hydroxide, triethanolamine, or mixtures thereof in an amount ranging from 3.5 to 6% by weight relative to the total weight of the composition, preferably from 4 to 5.5 wt% by weight, more preferably from 4.5 to 5 wt% .
14. The composition as claimed in claim 2, wherein the preservative is selected
from phenoxy ethanol, caprylyl glycol, parabens, methylisothiazolinone, benzisothiazolinone, methylchloroisothiazolinone, benzyl alcohol, salicylic acid, sorbic acid, sodium benzoate, potassium sorbate, or mixtures thereof in an amount ranging from 0.1 to 2% by weight relative to the total weight of the composition, preferably from 0.3 to 1.5 wt%, more preferably from 0.3 to 1 wt%.
15. The composition as claimed in claim 2, wherein the chelating agent is selected
from tetrasodium glutamate diacetate, disodium ethylenediaminetetraacetic acid, or mixtures thereof in an amount ranging from 0.2 to 0.6% by weight relative to the total weight of the composition, preferably from 0.3 to 0.6 wt%, more preferably from 0.3 to 0.5 wt%.

16. The composition as claimed in claim 2, wherein the solvent is water in an
amount ranging from 35 to 55% by weight relative to the total weight of the composition, preferably from 40 to 50 wt%, more preferably from 42 to 45 wt%.
17. The composition as claimed in claim 2, wherein the fragrance is in an amount
ranging from 0.4 to 0.8% by weight relative to the total weight of the composition, preferably from 0.5 to 0.8 wt%; the cosmetic active is in an amount ranging from 0.005 to 0.02% by weight relative to the total weight of the composition, preferably from 0.008 to 0.02 wt%; and the colourant is in an amount ranging from 0.0005 to 0.002% by weight relative to the total weight of the composition, preferably from 0.0001 to 0.002 wt%.
18. The composition as claimed in claim 17, wherein the cosmetic active is selected
from ascorbyl glucoside, vitamin C acetate, niacinamide, vitamin A, hyaluronic acid, alpha hydroxy acid, beta hydroxy acid, poly hydroxy acid, or mixtures thereof.
19. The composition as claimed in claims 1 to 18, wherein the composition is a
cleansing composition, and preferably a foamable rinse-off cleansing composition.
20. The composition as claimed in claims 1 to 19, wherein the composition is free
of sulphates.
21. The composition as claimed in claims 1 to 20, wherein the composition is free
of silicones.
22. A method for cleansing a keratin surface, such as skin, the method comprising:
applying the composition as claimed in claims 1 to 21, with water on the skin, followed by working the composition into a foam and rinsing off the composition.

23. Use of the composition as claimed in claims 1 to 21, for cleansing and brightening a keratin surface.