TECHNICAL FIELD
[001] The subject matter described herein in general relates to the field of cosmetics and personal care, and in particular, relates to the field of cleansing compositions.
BACKGROUND OF INVENTION
[002] Cosmetics and personal care industry keeps innovating in order to obtain newer formulations. The most popular cosmetics are usually ones which rate high on sensorial factor, while efficiently solving a problem. One such problem is development of cosmetics that are particularly targeted against tropical climate. [003] A number of afflictions are found to affect individuals in such climatic conditions. Miliaria or prickly heat or heat rash is one such common skin ailment of eccrine sweat gland, which is highly predominant in hot and humid climatic conditions. Under such conditions, maintenance of good hygiene is important to avoid infections. Personal care products, in particular cleansing compositions, hence gain utmost importance. Any attempt to suitably modify such compositions to ensure enhanced sensorial effect is sought after. One such sought-after approach is the introduction of suitable cooling agents in cosmetic compositions. [004] Various cooling agents are incorporated in a wide variety of personal care compositions. In case of soap based compositions, substantial amount of cooling agents binds with soap and get trapped in the soap based structure. As a result, high amounts of cooling agents in such compositions fail to deliver the desired cooling effect during the usage of such products. With regards to enhancing cooling effect of menthol in particular, in various personal care products, several attempts have been made to combine it with other compounds such as isopulegol, which can assist in prolonging the cooling sensation as disclosed in JPH0665023A and RU2229282C2. This kind of approach however increases the cost and complexity of the compositions.
[005] Hence, there is need in the art for a cleansing composition that is capable of delivering acceptable cooling effect, while being sensorially pleasing for the consumer.

SUMMARY OF THE INVENTION
[006] In an aspect of the present invention, there is provided a cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler; c) at least one non-soap surfactant; and d) at least one cooling agent, wherein the at
' least one inorganic filler to at least one cooling agent has a weight ratio in the range of37:ltol3:l.
[007] In another aspect of the present invention, there is provided a method for preparing the cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler; c) at least one non-soap surfactant; and d) at least one
i cooling agent, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1, said process comprising steps of: a) obtaining the alkali salt of fatty acid; b) obtaining the at least one inorganic filler; c) obtaining the at least one cooling agent; d) obtaining at least one non-soap surfactant and d) contacting the alkali salt of fatty acid, the at least one inorganic
' filler, the at least one non-soap surfactant and the at least one cooling agent to obtain the composition.
[008] 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
I 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. DETAILED DESCRIPTION OF THE INVENTION [009] 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.
I Definitions

[0010] 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 the 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.
[0011] 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.
[0012] 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".
[0013] 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.
[0014] The term "including" is used to mean "including but not limited to".
"Including" and "including but not limited to" are used interchangeably.
[0015] For the purpose of the disclosure, the term 'total fatty matter' or 'TFM'
refers to the total content of alkali salt of fatty acids that is present in a
composition. The alkali salts of fatty acids are also referred to as soaps. In the
present disclosure, fatty acids with carbon chain length ranging from C8 to C22
have been considered. For the purposes of this document, the terms soap and fatty
matter has been used interchangeably.
[0016] For the purpose of the present disclosure, fatty acids refers to one or more
fatty acids from the following group that comprises caprylic acid, capric acid,
lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid,
myristoleic acid, palmitoleic acid, sapienic acid, oleic acid, elaidic acid, vaccenic
acid, linoleic acid, linoelaidic acid, alpha-linolenic acid, arachidonic acid,
ecosapentaenoic acid, erucic acid, docosahexaenoic acid, and combinations thereof.

[0017] For the purpose of the present disclosure, the term 'non-soap surfactant' refers to a surfactant selected from the group consisting of selected from the group consisting of alpha olefin sulfonate, sodium alkyl sulfate, anionic acyl sarcosinate, N-acyl glutamates, alkyl ether sulfate, sodium cocoyl apple amino acid, sodium lauryl sarcocinate, and combinations thereof, in a weight percentage in the range of 2 - 10 % with respect to the composition.
[0018] Menthol is an organic compound made synthetically or obtained from corn mint, peppermint, or other mint oils. It is a waxy, crystalline substance, clear or white in color, which is solid at room temperature and melts slightly above. Menthol's ability to chemically trigger the cold-sensitive TRPM8 receptors in the skin is responsible for the well-known cooling sensation it provokes when inhaled, eaten, or applied to the skin.
[0019] The term "liquid cleansing product" include shower gel, face wash, body wash, hand wash, and paste. It is apparent that numerous other forms and modifications of the liquid cleansing product will be obvious to those skilled in the art and generally should be construed to cover all such obvious forms and modifications which are within the true spirit and scope of the present disclosure. The composition of present disclosure may be dispensed in the form of a liquid cleansing product.
[0020] The term "solid cleansing products" include cleansing bars, and films. It is apparent that numerous other forms and modifications of the solid cleansing product will be obvious to those skilled in the art and generally should be construed to cover all such obvious forms and modifications which are within the true spirit and scope of the present disclosure. The composition of present disclosure may be dispensed in the form of a solid cleansing product.
[0021] 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 temperature ranges of about 22-28 °C should be interpreted to include not only the explicitly recited limits of about 22 °C to about 28 °C, but also to include sub-ranges, such as 22-25 °C, 25-28 °C, and so forth, as well as individual amounts, including fractional amounts, within the specified ranges, such as 22.2 °C, and 27.5 °C, for example.
[0022] The term "at least one" is used to mean one or more and thus includes individual components as well as mixtures/combinations.
[0023] 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. [0024] 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. [0025] As mentioned previously, there is need in the art for a cleansing composition that is able to incorporate cooling agents such as menthol, without reducing its cooling efficacy. The present invention provides a soap composition that is suitable for manufacture of opaque soap bars. It does not use any add on compound to enhance the cooling effect of menthol. The composition of the present invention ensures better dispersion of menthol on skin surface during application on account of presence of a blend of high inorganic content with surfactants in the composition thereby improving the quality and duration of the cooling effect of the cooling agents.
[0026] In an embodiment of the present invention, there is provided a cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler; c) at least one non-soap surfactant; and d) at least one cooling agent, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1. In another embodiment of the present disclosure, the at least one

inorganic filler to at least one cooling agent has a weight ratio in the range of 35:1 to 13.5:1. In yet another embodiment of the present disclosure, the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 30:1 to 14:1.
[0027] In an embodiment of the present disclosure, there is provided a cleansing composition as described herein, wherein the alkali salt of fatty acid to at least one cooling agent has a weight ratio in the range of 55:1 to 88:1. In another embodiment of the present disclosure, the alkali salt of fatty acid to at least one cooling agent has a weight ratio in the range of 56:1 to 84:1. In yet another embodiment of the present disclosure, the alkali salt of fatty acid to at least one cooling agent has a weight ratio in the range of 57:1 to 83:1.
[0028] In an embodiment of the present invention, there is provided a cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler; c) at least one non-soap surfactant; and d) at least one cooling agent, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1 and the alkali salt of fatty acid to at least one cooling agent has a weight ratio in the range of 55:1 to 88:1.
[0029] In an embodiment of the present disclosure, there is provided a cleansing composition as described herein, wherein the at least one non-soap surfactant to at least one inorganic filler is in the range of 1:8 to 1:2.2. In another embodiment of the present disclosure, the at least one non-soap surfactant to at least one inorganic filler is in the range of 1:7.9 to 1:2.2. In yet another embodiment of the present disclosure, the at least one non-soap surfactant to at least one inorganic filler is in the range of 1:7.7 to 1:2.25.
[0030] In an embodiment of the present invention, there is provided a cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler; c) at least one non-soap surfactant; and d) at least one cooling agent, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1 and the at least one non-soap surfactant to at least one inorganic filler is in the range of 1:8 to 1:2.2.

[0031] In an embodiment of the present invention, there is provided a cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler; c) at least one non-soap surfactant; and d) at least one cooling agent, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1, the at least one non-soap surfactant to at least one inorganic filler is in the range of 1:8 to 1:2.2, and the at least one non-soap surfactant to at least one inorganic filler is in the range of 1:8 to 1:2.2
[0032] In an embodiment of the present disclosure, there is provided a cleansing composition as described herein, wherein the alkali salt of fatty acid is a sodium salt of fatty acid having a carbon chain length in the range of C8-C22. In another embodiment of the present disclosure the alkali salt of fatty acid is a sodium salt of fatty acid having a carbon chain length in the range of C12-C18. In yet another embodiment of the present disclosure the fatty acid is selected from the group consisting of caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, myristoleic acid, palmitoleic acid, sapienic acid, oleic acid, elaidic acid, vaccenic acid, linoleic acid, linoelaidic acid, alpha-linolenic acid, arachidonic acid, ecosapentaenoic acid, erucic acid, docosahexaenoic acid, and combinations thereof.
[0033] In an embodiment of the present invention, there is provided a cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler; c) at least one non-soap surfactant; and d) at least one cooling agent, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1 and the alkali salt of fatty acid is a sodium salt of fatty acid having a carbon chain length in the range of C8-C22.
[0034] In an embodiment of the present disclosure, there is provided a cleansing composition as described herein, wherein the at least one inorganic filler is selected from the group consisting of talc, sodium silicate, sodium carbonate (soda ash), clay, and combinations thereof. In another embodiment of the present disclosure, the inorganic filler is a combination of talc, sodium silicate, and sodium carbonate. [0035] In an embodiment of the present invention, there is provided a cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler;

c) at least one non-soap surfactant; and d) at least one cooling agent, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1 and the at least one inorganic filler is selected from the group consisting of talc, sodium silicate, sodium carbonate (soda ash), clay, and combinations thereof.
[0036] In an embodiment of the present disclosure, there is provided a cleansing composition as described herein, wherein the at least one cooling agent is selected from the group consisting of menthol, peppermint oil, menthone, menthyl lactate, and combinations thereof. In another embodiment of the present disclosure, the at least one cooling agent is menthol.
[0037] In an embodiment of the present invention, there is provided a cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler; c) at least one non-soap surfactant; and d) at least one cooling agent, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1 and the at least one cooling agent is selected from the group consisting of menthol, peppermint oil, menthone, menthyl lactate, and combinations thereof.
[0038] In an embodiment of the present disclosure, there is provided a cleansing composition as described herein, wherein composition comprising: a) the alkali salt of fatty acid having a weight percentage in the range of 25 - 70% with respect to the composition; b) the at least one inorganic filler having a weight percentage in the range of 11 - 25% with respect to the composition; c) the at least one non-soap surfactant having a weight percentage in the range of 1.9 - 10 % with respect to the composition; and d) the at least one cooling agent having a weight percentage in the range of 0.3%- 1.1% with respect to the composition. In another embodiment of the present disclosure, the composition comprising: a) the alkali salt of fatty acid having a weight percentage in the range of 30 - 68% with respect to the composition; b) the at least one inorganic filler having a weight percentage in the range of 12 - 24% with respect to the composition; c) the at least one non-soap surfactant having a weight percentage in the range of 2 - 9 % with respect to the composition; and d) the at least one cooling agent having a weight percentage in

the range of 0.3% - 1.0% with respect to the composition. In yet another embodiment of the present disclosure, the composition comprising: a) the alkali salt of fatty acid having a weight percentage in the range of 35 - 68% with respect to the composition; b) the at least one inorganic filler having a weight percentage in the range of 13 - 24% with respect to the composition; c) the at least one non-soap surfactant having a weight percentage in the range of 2 - 8.5 % with respect to the composition; and d) the at least one cooling agent having a weight percentage in the range of 0.4%- 1.0% with respect to the composition.
[0039] In an embodiment of the present disclosure, there is provided a cleansing composition as described herein, wherein composition comprising: a) the alkali salt of fatty acid having a weight percentage in the range of 25 - 70% with respect to the composition; b) the at least one inorganic filler having a weight percentage in the range of 11 - 25% with respect to the composition; c) the at least one non-soap surfactant having a weight percentage in the range of 1.9 - 10 % with respect to the composition; and d) the at least one cooling agent having a weight percentage in the range of 0.3%- 1.1% with respect to the composition, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1.
[0040] In an embodiment of the present disclosure, there is provided a cleansing composition as described herein, wherein composition comprising: a) the alkali salt of fatty acid having a weight percentage in the range of 25 - 70% with respect to the composition; b) the at least one inorganic filler having a weight percentage in the range of 11 - 25% with respect to the composition; c) the at least one non-soap surfactant having a weight percentage in the range of 1.9 - 10 % with respect to the composition; and d) the at least one cooling agent having a weight percentage in the range of 0.3% - 1.1% with respect to the composition, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1 and the alkali salt of fatty acid to at least one cooling agent has a weight ratio in the range of 55:1 to 88:1.
[0041] In an embodiment of the present disclosure, there is provided a cleansing composition as described herein, wherein composition comprising: a) the alkali salt

of fatty acid having a weight percentage in the range of 25 - 70% with respect to the composition; b) the at least one inorganic filler having a weight percentage in the range of 11 - 25% with respect to the composition; c) the at least one non-soap surfactant having a weight percentage in the range of 1.9 - 10 % with respect to the composition; and d) the at least one cooling agent having a weight percentage in the range of 0.3% - 1.1% with respect to the composition, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1 and the at least one non-soap surfactant to at least one inorganic filler is in the range of 1:8 to 1:2.2.
[0042] In an embodiment of the present disclosure, there is provided a cleansing composition as described herein, wherein the non-soap surfactant is selected from the group consisting of alpha olefin sulfonate, sodium alkyl sulfate, anionic acyl sarcosinate, N-acyl glutamates, alkyl ether sulfate, sodium cocoyl apple amino acid, sodium lauryl sarcocinate, and combinations thereof. In another embodiment of the present disclosure, the non-soap surfactant is alpha olefin sulfonate. [0043] In an embodiment of the present invention, there is provided a cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler; c) at least one non-soap surfactant; and d) at least one cooling agent, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1 and the non-soap surfactant is selected from the group consisting of alpha olefin sulfonate, sodium alkyl sulfate, anionic acyl sarcosinate, N-acyl glutamates, alkyl ether sulfate, sodium cocoyl apple amino acid, sodium lauryl sarcocinate, and combinations thereof.
[0044] In an embodiment of the present disclosure, there is provided a cleansing composition as described herein, wherein the composition has a total fatty matter content in the range of 23 - 65 % with respect to the composition. In another embodiment of the present disclosure, the composition has a total fatty matter content in the range of 25 - 63 % with respect to the composition. In another embodiment of the present disclosure, the composition has a total fatty matter content in the range of 30 - 61 % with respect to the composition.

[0045] In an embodiment of the present invention, there is provided a cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler; c) at least one non-soap surfactant; and d) at least one cooling agent, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1 and the composition has a total fatty matter content in the range of 23 - 65 % with respect to the composition.
[0046] In an embodiment of the present disclosure, there is provided a cleansing composition as described herein, wherein the composition further comprises at least one cosmetically acceptable excipient selected from the group consisting of diluent, chelating agent, humectant, preservative, colorant, fragrance and combinations thereof.
[0047] In an embodiment of the present invention, there is provided a cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler; c) at least one non-soap surfactant; d) at least one cooling agent; and e) at least one cosmetically acceptable excipient selected from the group consisting of diluent, chelating agent, humectant, preservative, colorant, fragrance and combinations thereof, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1.
[0048] In an embodiment of the present invention, there is provided a cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler; c) at least one non-soap surfactant; d) at least one cooling agent; and e) diluent is water having a weight percentage in the range of 12 - 25 % with respect to the composition, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1. In another embodiment of the present disclosure, the diluent is water. In yet another embodiment of the present disclosure, the diluent has a weight percentage in the range of 14 - 23% with respect to the composition.
[0049] In an embodiment of the present invention, there is provided a cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler; c) at least one non-soap surfactant; d) at least one cooling agent; e) diluent; and f) chelating agent selected from the group consisting of ethylenediaminetetraacetic

acid (EDTA), ethane 10 l-hydroxy-l,l-diphosphonate (EHDP), citric acid, and combinations thereof, and having a weight percentage in the range of 0.001 -0.1 % with respect to the composition, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1. In another embodiment of the present disclosure, the chelating agent is EDTA. In yet another embodiment of the present disclosure, the chelating agent has a weight percentage in the range of 0.005 - 0.05% with respect to the composition. [0050] In an embodiment of the present invention, there is provided a cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler; c) at least one non-soap surfactant; d) at least one cooling agent; e) diluent; f) chelating agent; and g) humectant selected from the group consisting of glycerin, sorbitol, PEG 400, propylene glycol, and combinations thereof, and having a weight percentage in the range of 1 - 10 % with respect to the composition, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1. In another embodiment of the present disclosure, the humectant is glycerin. In yet another embodiment of the present disclosure, the humectant has a weight percentage in the range of 2 - 9% with respect to the composition.
[0051] In an embodiment of the present invention, there is provided a cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler; c) at least one non-soap surfactant; d) at least one cooling agent; e) diluent; f) chelating agent; g) humectant; and h) preservative selected from the group consisting of hydantoin, butylated hydroxytoluene (BHT), citrates, phenoxy ethanol, and combinations thereof, and having a weight percentage in the range of 0.001 - 1.0 % with respect to the composition, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1. In another embodiment of the present disclosure, the preservative is hydantoin. In yet another embodiment of the present disclosure, the preservative has a weight percentage in the range of 0.005 - 0.5% with respect to the composition. [0052] In an embodiment of the present invention, there is provided a cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler;

c) at least one non-soap surfactant; d) at least one cooling agent; e) diluent; f) chelating agent; g) humectant; h) preservative; and i) colorant selected from the group consisting of dyes, pigments, and combinations thereof, and having a weight percentage in the range of 0.00001 - 1 % with respect to the composition, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1. In another embodiment of the present disclosure, the colorant is a dye. In yet another embodiment of the present disclosure, the colorant has a weight percentage in the range of 0.00005 - 0.5% with respect to the composition. [0053] In an embodiment of the present invention, there is provided a cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler; c) at least one non-soap surfactant; d) at least one cooling agent; e) diluent; f) chelating agent; g) humectant; h) preservative; i) colorant; and j) fragrance selected from the group consisting of natural, and synthetic fragrances, and combinations thereof, and having a weight percentage in the range of 0.0001 - 2 % with respect to the composition, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1. In another embodiment of the present disclosure, the fragrance is a natural fragrance. In yet another embodiment of the present disclosure, the colorant has a weight percentage in the range of 0.0005 - 1.5% with respect to the composition.
[0054] In an embodiment of the present invention, there is provided a method for preparing the cleansing composition comprising: a) alkali salt of fatty acid; b) at least one inorganic filler; c) at least one non-soap surfactant; and d) at least one cooling agent, wherein the at least one inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1 to 13:1, said process comprising steps of: a) obtaining the alkali salt of fatty acid; b) obtaining the at least one inorganic filler; c) obtaining the at least one cooling agent; d) obtaining at least one non-soap surfactant; and e) contacting the alkali salt of fatty acid, the at least one inorganic filler, the at least one non-soap surfactant and the at least one cooling agent to obtain the composition.
[0055] In an embodiment of the present invention, there is provided a method for preparing the cleansing composition comprising: a) alkali salt of fatty acid; b) at

least one inorganic filler; c) at least one non-soap surfactant; d) at least one cooling
agent; and e) fragrance, wherein the at least one inorganic filler to at least one
cooling agent has a weight ratio in the range of 37:1 to 13:1, said process
comprising steps of: a) obtaining the alkali salt of fatty acid; b) obtaining the at
least one inorganic filler; c) obtaining the at least one cooling agent; d) obtaining at
least one non-soap surfactant; e) obtaining fragrance; f) contacting the alkali salt of
fatty acid, the at least one inorganic filler, the at least one non-soap surfactant, the
at least one cooling agent, fragrance with diluent to obtain the mixture; and g)
processing the mixture to obtain cleansing composition.
[0056] In an embodiment of the present disclosure, there is provided a method for
preparing the cleansing composition as described herein, wherein processing the
mixture is carried out by a process selected from the group consisting of milling,
extrusion, cutting, stamping, and combinations thereof.
[0057] In an embodiment of the present disclosure, there is provided a method for
preparing the cleansing composition as described herein, wherein contacting the
alkali salt of fatty acid, the at least one inorganic filler, the at least one non-soap
surfactant, the at least one cooling agent, fragrance with diluent is carried out at a
temperature in the range of 20 - 40 °C for a period in the range of 10 - 20 min to
obtain the mixture.
[0058] In an embodiment of the present disclosure, there is provided a method for
preparing the cleansing composition as described herein, wherein milling is carried
out a temperature in the range of 6 - 10 °C
[0059] In an embodiment of the present disclosure, there is provided a method for
preparing the cleansing composition as described herein, wherein extrusion is
carried out a temperature in the range of 30 - 48 °C
[0060] In an embodiment of the present disclosure, there is provided a cleansing
composition as described herein, wherein the composition is dispensed in a form
selected from shower gels, emulsion, solution, face washes, body washes, hand
washes, pastes, liquid cleansing products, solid cleansing products, cleansing bars
and films.
EXAMPLES

[0061] 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. [0062] As described in the background section, incorporation of cooling agents such as menthol into the soap compositions have been attempted previously, however, menthol was found to be inefficient in delivering acceptable cooling. Hence, higher load of cooling agent is needed for obtaining an acceptable 'cooling' sensation. The present disclosure, provides a composition that is able to efficiently deliver suitable cooling sensation with minimum amount cooling agent. A convenient method for obtaining the composition is also defined. Example 1
Method for preparation of cleansing composition
[0063] Soap or alkali salt of fatty acid comprising 85% of C16 to C18 fatty acids and 15% of C12 to C14 fatty acid was mixed with, alpha olefin sulphonates (non-soap surfactant), water (diluent), menthol (cooling agent), sodium silicate (inorganic filler), talc (inorganic filler), and fragrance at a temperature in the range of 20 - 48 °C, for a period of 15 minutes to obtain a mixture. The mixture was milled at a temperature in the range of 6 - 10 °C by passing through rollers having chilled water circulation system to obtain a uniform homogeneous product, which was extruded at a temperature in the range of 30 - 48 °C to obtain plodded slug. Subsequently, the slug was cut into a pre-determined size and stamped to obtain the cleansing composition in the form of a bar. Example 2 Examples to determine working ranges of critical ingredients

[0064] The various listed ingredients were found to be effective in producing the required sensorials only when worked within the ranges as described herein. Milled soap bars were obtained using the process as described in Example 1. The said compositions (in the form of soap bars) are listed below in Table 1. Table 1- Listing of various compositions 1-6.
[0065] It is to be appreciated from the data presented in Table 1, the variation of inorganic filler with respect to cooling agent (menthol) was carried out within the prescribed weight ratio range of 13:1 to 37:1. The criticality of mentioned ratio range can be identified from the corresponding sensorials provided in Table 2 below. A number of sensorials were tested including cooling sensation felt immediately and after 2 hours. Also, the cooling sensation upon sniffing of the dry soap bar as well as the cooling sensation felt during use upon hand was tested among others.
Table 2- Sensorial studies to identify cooling effect amongst compositions 1-6.

[0066] Provided in the above Table 2 are the details of sensorial studies conducted on a panel of 10 members. Observations on each of the parameters of the panellists, on a score of 1 to 10 are provided. It was observed that for compositions 1 to 3 (working), the scores for each of the parameters were almost 30 to 60% better than the corresponding scores for each of the parameters for compositions 4 to 6 (non-working).
[0067] Amongst the compositions, the cooling effect was more pronounced for composition 3 wherein the weight percentage of talc as well as the overall inorganic filler content along with weight percentage of non-soap surfactants is the highest (Tables 1 and 2). The corresponding weight percentage of sodium salt of fatty acids was found to be the lowest, signifying the correlation between enhancement in cooling effect and high inorganic content with high non-soap surfactant content. Composition 1 was the next, to score well on all the parameters, and this too corresponds with the same finding that the cooling effect is directly proportional to the amount of inorganic content and surfactant present in the composition. Composition 2 scored lower amongst all the working compositions on account of the relatively lower amounts of talc/inorganic content as well as non-soap surfactant in the composition in comparison to compositions 3 and 1. Hence,

it can be appreciated that the weight ratio of non-soap surfactant to inorganic filler
in the range of 1:8 to 1:2.2 is highly critical.
[0068] Even though compositions 4-6 had the same menthol content as present in
the compositions 1-3, they were found to not provide as pronounced a cooling
effect as observed in case of compositions 1 to 3. This could have been on account
of the lower amounts of talc and surfactants or higher amounts of sodium salts of
fatty acids with regard to the amount of menthol present in these compositions. It
may be construed that the menthol gets bound into an undeliverable form in
presence of high amounts of fatty acid. Hence, it can be appreciated that the weight
ratio of alkali salt of fatty acid to cooling agent in the range of 55:1 to 88:1 is
highly critical.
[0069] It is therefore, concluded that the composition of the present disclosure
comprising inorganic filler in the weight percentage range of 11 to 25% with
respect to the composition, along with surfactants having the weight percentage
range of 2 to 10 % with respect to the composition is critical. Said composition, for
a given menthol content and within the given total fatty matter (23 - 65 % with
respect to the composition) provides a pronounced cooling effect across the above
parameters.
Advantages of the present disclosure:
[0070] The present disclosure reveals a composition comprising alkali salt of fatty
acid, inorganic filler, non-soap surfactant, along with cooling agent, wherein the
inorganic filler to at least one cooling agent has a weight ratio in the range of 37:1
to 13:1. As is observed, menthol gets bound and is unable to effectively deliver
cooling sensation. The composition is able to overcome the problem and
effectively deliver an effective cooling sensation with use of minimum amount of
cooling agent (weight percentage in the range of 0.3 -1.1 % with respect to the
composition).

I/We Claim:
1. A cleansing composition comprising:
a) alkali salt of fatty acid;
b) at least one inorganic filler;
c) at least one non-soap surfactant; and
d) at least one cooling agent,
wherein the at least one inorganic filler to the at least one cooling agent has a weight ratio in the range of 37:1 to 13:1.
2. The cleansing composition as claimed in claim 1, wherein the alkali salt of fatty acid to the at least one cooling agent has a weight ratio in the range of 55:1 to 88:1.
3. The cleansing composition as claimed in claim 1, wherein the at least one non-soap surfactant to the at least one inorganic filler is in the range of 1:8 to 1:2.2.
4. The cleansing composition as claimed in claim 1, wherein the alkali salt of fatty acid is a sodium salt of fatty acid having a carbon chain length in the range of C8-C22.
5. The cleansing composition as claimed in claim 1, wherein the at least one inorganic filler is selected from the group consisting of talc, sodium silicate, sodium carbonate, clay, and combinations thereof.
6. The cleansing composition as claimed in claim 1, wherein the at least one cooling agent is selected from the group consisting of menthol, peppermint oil, menthone, menthyl lactate, and combinations thereof.
7. The cleansing composition as claimed in any one of the claims 1-6, said composition comprising:

a) the alkali salt of fatty acid having a weight percentage in the range of 25 - 70% with respect to the composition;
b) the at least one inorganic filler having a weight percentage in the range of 11 - 25% with respect to the composition;
c) the at least one non-soap surfactant having a weight percentage in the range of 1.9 - 10 % with respect to the composition; and

d) the at least one cooling agent having a weight percentage in the range of 0.3%- 1.1% with respect to the composition.
8. The cleansing composition as claimed in any one of the claims 1, wherein the at least one non-soap surfactant is selected from the group consisting of alpha olefin sulfonate, sodium alkyl sulfate, anionic acyl sarcosinate, N-acyl glutamates, alkyl ether sulfate, sodium cocoyl apple amino acid, sodium lauryl sarcocinate, and combinations thereof.
9. The cleansing composition as claimed in any one of the claims 1-8, wherein the composition has a total fatty matter content in the range of 23 - 65 % with respect to the composition.
10. The cleansing composition as claimed in any one of the claims 1-9, wherein the composition further comprises at least one cosmetically acceptable excipient selected from the group consisting of diluent, chelating agent, humectant, preservative, colorant, fragrance, and combinations thereof.
11. The cleansing composition as claimed in claim 10, wherein the diluent is water having a weight percentage in the range of 12 - 25 % with respect to the composition; the chelating agent is selected from the group consisting of ethylenediaminetetraacetic acid (EDTA), ethane 10 1-hydroxy-1,1-diphosphonate (EHDP), citric acid, and combinations thereof, and has a weight percentage in the range of 0.001 - 0.1 % with respect to the composition, the humectant is selected from the group consisting of glycerin, sorbitol, PEG 400, propylene glycol, and combinations thereof, and has a weight percentage in the range of 1 - 10 % with respect to the composition; the preservative is selected from the group consisting of hydantoin, butylated hydroxytoluene (BHT), citrates, phenoxy ethanol, and combinations thereof, and has a weight percentage in the range of 0.001 -1.0 % with respect to the composition; the colorant is selected from the group consisting of dyes, pigments, and combinations thereof, and has a weight percentage in the range of 0.00001 - 1 % with respect to the composition; the fragrance is selected from the group consisting of natural,

and synthetic fragrances, and combinations thereof, and has a weight percentage in the range of 0.0001 - 2 % with respect to the composition.
12. The method for preparing the cleansing composition as claimed in claim 1, said method comprising the steps of: a) obtaining the alkali salt of fatty acid; b) obtaining the at least one inorganic filler; c) obtaining the at least one cooling agent; d) obtaining the at least one non-soap surfactant, and e) contacting the alkali salt of fatty acid, the at least one inorganic filler, the at least one non-soap surfactant, and the at least one cooling agent to obtain the composition.