FIELD OF THE INVENTION
[001] The present disclosure generally relates to a personal cleansing composition and in particular to a stable hand wash cleansing composition with a balance of effective cleansing, high foam, and stability at different temperature conditions. The present disclosure also relates to the process of preparation of the stable cleansing composition.
BACKGROUND OF THE INVENTION
[002] Liquid personal cleansing compositions are one of the most widely used cleanliness products. Amongst various cleansing compositions, hand wash formulations are also becoming popular for maintaining the hygiene and people prefer to use the same several times a day to wash their hands.
[003] Hand wash compositions are typically formulated in order to provide good cleaning, good foaming, and good germ killing. The hand washes are made either from soap or surfactant. The soap based hand wash typically contains the fatty acids such as lauric acid, myristic acid, palmitic acid, and the like. Additionally, the hand wash compositions may consist of moisturizers or other skin benefit agents to promote mildness on the skin.
[004] One of the problems associated with the existing fatty acid based hand wash formulations is inconsistent viscosity behavior at different temperature conditions, i.e., the formulation shows drastic viscosity drop at lower temperature (5-10 °C) compared to the viscosity at room temperature. Thus, the hand wash formulation becomes unstable at lower temperature as the formulation becomes watery /very thin which is actually contrary to the general experience. Typically, the cleansing products such as hand wash become thicker at lower temperature and thinner at higher temperatures. With extreme climatic conditions becoming more and more prevalent than ever, formulations that can withstand such temperature fluctuations are much desired. [005] Accordingly, there remains a need for hand wash composition that does not suffer from the problem of inconsistent viscosity behavior at different temperature conditions, with a balance of effective cleansing, high foam, and stability.

SUMMARY OF THE INVENTION
[006] In an aspect of present disclosure, there is provided a stable cleansing composition comprising: (a) lauric acid; (b) myristic acid; and (c) hystric acid, wherein the lauric acid to the myristic acid to the hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2.
[007] In an aspect of present disclosure, there is provided a process for the preparation of a stable cleansing composition comprising: (a) lauric acid; (b) myristic acid; and (c) hystric acid, wherein the lauric acid to the myristic acid to the hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2, said process comprising the steps of: (a) obtaining lauric acid; (b) obtaining myristic acid; (c) obtaining hystric acid; and (d) contacting lauric acid, myristic acid, and hystric acid in a ratio of 1:1:0.5-1:2.5:2 to obtain the stable cleansing composition.
[008] In an aspect of present disclosure, there is provided a process for the preparation of a stable cleansing composition comprising the steps of: (a) contacting at least one chelating agent, at least one surfactant, at least one base with water to obtain an aqueous phase; (b) contacting lauric acid, myristic acid, with hystric acid to obtain an oil phase; (c) contacting the water phase and the oil phase followed by homogenization to obtain a first mixture; (d) contacting at least one emollient, at least one humectant, at least one preservative, at least one antioxidant with water to obtain a second mixture; (e) contacting the first mixture and the second mixture to obtain a third mixture; and (f) contacting the third mixture with viscosity enhancer to obtain the stable cleansing composition.
[009] 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.
DETAILED DESCRIPTION OF THE INVENTION

[0010] 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:
[0011] For convenience, before further description of the present disclosure, certain
terms employed in the specification, and examples are collected 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.
[0012] 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.
[0013] 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”.
[0014] 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 steps.
[0015] The term “including” is used to mean “including but not limited to”,
“including” and “including but not limited to” are used interchangeably.
[0016] The term “stable” refers to the consistent viscosity behavior of the cleansing
composition over a range of temperatures.
[0017] 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 or testing of the disclosure, the preferred methods, and materials are now described. All publications mentioned herein are incorporated herein by reference.
[0018] 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 scope of the disclosure, as described herein.
[0019] As discussed above, viscosity behaviour at different temperature conditions,
of the existing fatty acid based hand wash compositions is an important aspect which needs to dealt with so as to achieve a successful stable composition with special flow behaviour. To address the problem as discussed above, the present disclosure provides a stable cleansing compositions comprising of a combination of fatty acids in a specific ratios which provides a desired viscosity at different temperature conditions along with a balance of effective cleansing, high foam, and stability.
[0020] In an embodiment of the present disclosure, there is provided a stable
cleansing composition including: (a) lauric acid; (b) myristic acid; and (c) hystric acid; wherein the lauric acid to the myristic acid to the hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2.
[0021] In an embodiment of the present disclosure, there is provided a stable
cleansing composition including: (a) lauric acid; (b) myristic acid; and (c) hystric acid comprising palmitic acid having weight percentage of 55% and stearic acid having weight percentage of 45%; wherein lauric acid to myristic acid to hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2.
[0022] In an embodiment of the present disclosure, there is provided a stable
cleansing composition including: (a) lauric acid; (b) myristic acid; (c) hystric acid; and (d) at least one surfactant having a weight percentage in the range of 0.1-10% with respect to the composition and selected from the group consisting of cocamide MEA, disodium laureth sulfosuccinate, cocamidopropyl betaine, sodium laureth ether

sulphate, and combinations thereof, wherein lauric acid to myristic acid to hystric acid
weight ratio is in the range of 1:1:0.5-1:2.5:2.
[0023] In an embodiment of the present disclosure, there is provided a stable
cleansing composition as described herein, wherein the cleansing composition further
comprises of at least one surfactant having a weight percentage in the range of 2-8%
with respect to the composition.
[0024] In an embodiment of the present disclosure, there is provided a stable
cleansing composition as described herein, wherein the cleansing composition further
comprises of at least one surfactant having a weight percentage in the range of 3-7%
with respect to the composition.
[0025] In an embodiment of the present disclosure, there is provided a stable
cleansing composition as described herein, wherein the cleansing composition further
comprises of at least one surfactant having a weight percentage of 5.2% with respect to
the composition.
[0026] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the surfactant is selected from the
group consisting of cocamide MEA, disodium laureth sulfosuccinate, cocamidopropyl
betaine, sodium laureth ether sulphate, and combinations thereof.
[0027] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the surfactant is selected from the
group consisting of cocamide MEA, sodium laureth ether sulphate, and combinations
thereof.
[0028] In an embodiment of the present disclosure there is provided a stable
cleansing composition including: (a) lauric acid; (b) myristic acid; (c) hystric acid; and
(d) at least one excipient selected from the group consisting of chelating agent,
humectant, emollient, preservative, base, viscosity enhancer, colorant, antioxidant,
fragrance, and combinations thereof, wherein lauric acid to myristic acid to hystric
acid weight ratio is in the range of 1:1:0.5-1:2.5:2.

[0029] In an embodiment of the present disclosure there is provided a stable cleansing composition including: (a) lauric acid; (b) myristic acid; (c) hystric acid; and (d) at least one excipient selected from the group consisting of chelating agent, humectant, emollient, preservative, base, viscosity enhancer, colorant, antioxidant, fragrance, and combinations thereof, wherein lauric acid to myristic acid to hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2; the chelating agent has a weight percentage in the range of 0.01-2% with respect to the composition and the chelating agent is selected from the group consisting ethylene diaminetetracetic acid, nitrilotetraacetic acid, β-alaninediacetic acid, ethylenediaminosuccinic acid, aminotrimethylenephosphoric acid, serinediaacetic acid, asparaginediacetic acid, methylglycinediacetic acid diethylenetriamine pentaacetic acid, nitrilotriacetic acid, cyclohexanediamine tetraacetic acid, triethanolamineethylenediamine tetraacetic acid, ethylenetriamine pentaacetic acid, tetraethylenetri amine, ethylenediamine, diethyltriamine, and combinations thereof; the humectant has a weight percentage in the range of 0.1-5% with respect to the composition and the humectant is selected from the group consisting of glycerin, sorbitol, polyethylene glycol, polypropylene glycol, and combinations thereof; the emollient has a weight percentage in the range of 0.1-2% with respect to the composition, and the emollient is selected from the group consisting of glycol distearate, mineral oil, glyceryl stearate, isopropyl palmitate, shea butter, and combinations thereof.
[0030] In an embodiment of the present disclosure there is provided a stable cleansing composition as described herein, wherein the chelating agent has a weight percentage in the range of 0.01-2% with respect to the composition. [0031] In an embodiment of the present disclosure, there is provided a stable cleansing composition as described herein, wherein the chelating agent has a weight percentage of 0.05% with respect to the composition.
[0032] In an embodiment of the present disclosure there is provided a stable cleansing composition as described herein, wherein the chelating agent is selected from the group consisting ethylene diaminetetracetic acid, nitrilotetraacetic acid, β-

alaninediacetic acid, ethylenediaminosuccinic acid, aminotrimethylenephosphoric
acid, serinediacetic acid, asparaginediacetic acid, methylglycinediacetic acid
diethylenetriamine pentaacetic acid, nitrilotriacetic acid, cyclohexanediamine
tetraacetic acid, triethanolamineethylenediamine tetraacetic acid, ethylenetriamine
pentaacetic acid, tetraethylenetriamine, ethylenediamine, diethyltriamine, and
combinations thereof.
[0033] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the chelating agent is ethylene
diaminetetracetic acid.
[0034] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the humectant has a weight
percentage in the range of 0.1-5% with respect to the composition.
[0035] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the humectant has a weight
percentage in the range of 0.5-1.5% with respect to the composition.
[0036] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the humectant has a weight
percentage of 1% with respect to the composition.
[0037] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the humectant is selected from the
group consisting of glycerin, sorbitol, polyethylene glycol, polypropylene glycol, and
combinations thereof.
[0038] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the humectant is glycerin.
[0039] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the emollient has a weight
percentage in the range of 0.1-2% with respect to the composition.

[0040] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the emollient has a weight
percentage in the range of 0.5-1% with respect to the composition.
[0041] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the emollient has a weight
percentage of 0.8% with respect to the composition.
[0042] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the emollient is selected from the
group consisting of glycol distearate, mineral oil, glyceryl stearate, isopropyl
palmitate, shea butter, and combinations thereof.
[0043] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the emollient is glycol distearate.
[0044] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the preservative has a weight
percentage in the range of 0.01-2% with respect to the composition.
[0045] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the preservative has a weight
percentage in the range of 0.05-1% with respect to the composition.
[0046] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the preservative has a weight
percentage of 0.1% with respect to the composition.
[0047] In an embodiment of the present disclosure there is provided a stable
cleansing composition including: (a) lauric acid; (b) myristic acid; (c) hystric acid; and
(d) at least one excipient selected from the group consisting of chelating agent,
humectant, emollient, preservative, base, viscosity enhancer, colorant, antioxidant,
fragrance, and combinations thereof, wherein lauric acid to myristic acid to hystric
acid weight ratio is in the range of 1:1:0.5-1:2.5:2; the preservative has a weight
percentage in the range of 0.01-2% with respect to the composition and the
preservative is selected from the group consisting of 1,3-dihydroxymethyl-

5,5dimethylhydantoin (DMDM hydantoin), methylchloroisothiazolinone (and) methylisothiazolinone, phenoxyethanol, parabens, and combinations thereof; the base has a weight percentage in the range of 0.1-10 % with respect to the composition and the base is selected from the group consisting of potassium hydroxide, sodium hydroxide, and combinations thereof.
[0048] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the preservative is selected from the group consisting of 1,3-dihydroxymethyl-5,5dimethylhydantoin (DMDM hydantoin), methylchloroisothiazolinone (and) methylisothiazolinone, phenoxyethanol, parabens, and combinations thereof.
[0049] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the preservative is 1,3-dihydroxymethyl-5,5dimethylhydantoin (DMDM hydantoin).
[0050] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the base has a weight percentage in the range of 0.1-10 % with respect to the composition.
[0051] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the base has a weight percentage in the range of 1-7 % with respect to the composition.
[0052] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the base has a weight percentage in the range of 3-5 % with respect to the composition.
[0053] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the base has a weight percentage of 4.831% with respect to the composition.
[0054] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the base is selected from the group consisting of potassium hydroxide, sodium hydroxide, and combinations thereof.

[0055] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the base is potassium hydroxide.
[0056] In an embodiment of the present disclosure there is provided a stable
cleansing composition including: (a) lauric acid; (b) myristic acid; (c) hystric acid; and (d) at least one excipient selected from the group consisting of chelating agent, humectant, emollient, preservative, base, viscosity enhancer, colorant, antioxidant, fragrance, and combinations thereof, wherein lauric acid to myristic acid to hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2; the viscosity enhancer has a weight percentage in the range of 0.1-7 % with respect to the composition and the viscosity enhancer is selected from the group consisting of potassium chloride, sodium chloride, and combinations thereof; the anti-oxidant has a weight percentage in the range of 0.01-2% with respect to the composition and the anti-oxidant is selected from the group consisting of butylated hydroxyltoluene, tocopheryl acetate, vitamin E, and combinations thereof.
[0057] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the viscosity enhancer has a weight percentage in the range of 0.1-7% with respect to the composition.
[0058] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the viscosity enhancer has a weight percentage in the range of 1-5% with respect to the composition.
[0059] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the viscosity enhancer has a weight percentage in the range of 2-4% with respect to the composition.
[0060] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the viscosity enhancer has a weight percentage of 3% with respect to the composition.
[0061] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the viscosity enhancer is selected

from the group consisting of potassium chloride, sodium chloride, and combinations
thereof.
[0062] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the viscosity enhancer is
potassium chloride.
[0063] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the anti-oxidant has a weight
percentage in the range of 0.01-2% with respect to the composition.
[0064] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the anti-oxidant has a weight
percentage in the range of 0.01-1% with respect to the composition.
[0065] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the anti-oxidant has a weight
percentage in the range of 0.04-0.1% with respect to the composition.
[0066] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the anti-oxidant has a weight
percentage of 0.05% with respect to the composition.
[0067] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the anti-oxidant is selected from
the group consisting of butylated hydroxyltoluene, tocopheryl acetate, vitamin E, and
combinations thereof.
[0068] In an embodiment of the present disclosure there is provided a stable
cleansing composition as described herein, wherein the anti-oxidant is butylated
hydroxytoluene.
[0069] In an embodiment of the present disclosure there is provided a stable
cleansing composition comprising: (a) lauric acid having a weight percentage in the
range of 0.1-10% with respect to the composition; (b) myristic acid having a weight
percentage in the range of 0.1-10% with respect to the composition; and (c) hystric
acid having a weight percentage in the range of 0.1-10% with respect to the

composition; wherein the lauric acid to the myristic acid to the hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2.
[0070] In an embodiment of the present disclosure there is provided a stable
cleansing composition comprising: (a) lauric acid having a weight percentage in the range of 0.1-10% with respect to the composition; (b) myristic acid having a weight percentage in the range of 0.1-10% with respect to the composition; (c) hystric acid having a weight percentage in the range of 0.1-10% with respect to the composition; and (d) at least one surfactant having a weight percentage in the range of 0.1-10% with respect to the composition, wherein the lauric acid to myristic acid to hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2.
[0071] In an embodiment of the present disclosure there is provided a stable
cleansing composition comprising: (a) lauric acid having a weight percentage in the
range of 0.1-10% with respect to the composition; (b) myristic acid having a weight
percentage in the range of 0.1-10% with respect to the composition; (c) hystric acid
having a weight percentage in the range of 0.1-10% with respect to the composition;
(d) at least one surfactant having a weight percentage in the range of 0.1-10% with
respect to the composition; and (e) at least one chelating agent having a weight
percentage in the range of 0.01-2% with respect to the composition, wherein the lauric
acid to myristic acid to hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2.
[0072] In an embodiment of the present disclosure there is provided a stable
cleansing composition comprising: (a) lauric acid having a weight percentage in the range of 0.1-10% with respect to the composition; (b) myristic acid having a weight percentage in the range of 0.1-10% with respect to the composition; (c) hystric acid having a weight percentage in the range of 0.1-10% with respect to the composition; (d) at least one surfactant having a weight percentage in the range of 0.1-10% with respect to the composition; (e) at least one chelating agent having a weight percentage in the range of 0.01-2% with respect to the composition; and (f) at least one humectant having a weight percentage in the range of 0.1-5% with respect to the composition,

wherein the lauric acid to myristic acid to hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2.
[0073] In an embodiment of the present disclosure there is provided a stable
cleansing composition comprising: (a) lauric acid having a weight percentage in the range of 0.1-10% with respect to the composition; (b) myristic acid having a weight percentage in the range of 0.1-10% with respect to the composition; (c) hystric acid having a weight percentage in the range of 0.1-10% with respect to the composition; (d) at least one surfactant having a weight percentage in the range of 0.1-10% with respect to the composition; (e) at least one chelating agent having a weight percentage in the range of 0.01-2% with respect to the composition; (f) at least one humectant having a weight percentage in the range of 0.1-5% with respect to the composition; and (g) at least one emollient having a weight percentage in the range of 0.1-2% with respect to the composition, wherein the lauric acid to myristic acid to hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2.
[0074] In an embodiment of the present disclosure there is provided a stable
cleansing composition comprising: (a) lauric acid having a weight percentage in the range of 0.1-10% with respect to the composition; (b) myristic acid having a weight percentage in the range of 0.1-10% with respect to the composition; (c) hystric acid having a weight percentage in the range of 0.1-10% with respect to the composition; (d) at least one surfactant having a weight percentage in the range of 0.1-10% with respect to the composition; (e) at least one chelating agent having a weight percentage in the range of 0.01-2% with respect to the composition; (f) at least one humectant having a weight percentage in the range of 0.1-5% with respect to the composition; (g) at least one emollient having a weight percentage in the range of 0.1-2% with respect to the composition; and (h) at least one preservative having a weight percentage in the range of 0.01-2% with respect to the composition, wherein the lauric acid to myristic acid to hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2.
[0075] In an embodiment of the present disclosure there is provided a stable
cleansing composition comprising: (a) lauric acid having a weight percentage in the

range of 0.1-10% with respect to the composition; (b) myristic acid having a weight percentage in the range of 0.1-10% with respect to the composition; (c) hystric acid having a weight percentage in the range of 0.1-10% with respect to the composition; (d) at least one surfactant having a weight percentage in the range of 0.1-10% with respect to the composition; (e) at least one chelating agent having a weight percentage in the range of 0.01-2% with respect to the composition; (f) at least one humectant having a weight percentage in the range of 0.1-5% with respect to the composition; (g) at least one emollient having a weight percentage in the range of 0.1-2% with respect to the composition; (h) at least one preservative having a weight percentage in the range of 0.01-2% with respect to the composition; and (i) at least one base having a weight percentage in the range of 0.1-10 % with respect to the composition, wherein the lauric acid to myristic acid to hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2.
[0076] In an embodiment of the present disclosure there is provided a stable
cleansing composition comprising: (a) lauric acid having a weight percentage in the range of 0.1-10% with respect to the composition; (b) myristic acid having a weight percentage in the range of 0.1-10% with respect to the composition; (c) hystric acid having a weight percentage in the range of 0.1-10% with respect to the composition; (d) at least one surfactant having a weight percentage in the range of 0.1-10% with respect to the composition; (e) at least one chelating agent having a weight percentage in the range of 0.01-2% with respect to the composition; (f) at least one humectant having a weight percentage in the range of 0.1-5% with respect to the composition; (g) at least one emollient having a weight percentage in the range of 0.1-2% with respect to the composition; (h) at least one preservative having a weight percentage in the range of 0.01-2% with respect to the composition; (i) at least one base having a weight percentage in the range of 0.1-10 % with respect to the composition; and (j) at least one viscosity enhancer having a weight percentage in the range of 0.1-7% with respect to the composition, wherein the lauric acid to myristic acid to hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2.

[0077] In an embodiment of the present disclosure there is provided a stable
cleansing composition comprising: (a) lauric acid having a weight percentage in the range of 0.1-10% with respect to the composition; (b) myristic acid having a weight percentage in the range of 0.1-10% with respect to the composition; (c) hystric acid having a weight percentage in the range of 0.1-10% with respect to the composition; (d) at least one surfactant having a weight percentage in the range of 0.1-10% with respect to the composition; (e) at least one chelating agent having a weight percentage in the range of 0.01-2% with respect to the composition; (f) at least one humectant having a weight percentage in the range of 0.1-5% with respect to the composition; (g) at least one emollient having a weight percentage in the range of 0.1-2% with respect to the composition; (h) at least one preservative having a weight percentage in the range of 0.01-2% with respect to the composition; (i) at least one base having a weight percentage in the range of 0.1-10 % with respect to the composition; (j) at least one viscosity enhancer having a weight percentage in the range of 0.1-7% with respect to the composition; and (k) at least one anti-oxidant having a weight percentage in the range of 0.01-2% with respect to the composition, wherein the lauric acid to myristic acid to hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2.
[0078] In an embodiment of the present disclosure there is provided a stable
cleansing composition comprising: (a) lauric acid having a weight percentage in the range of 1-9% with respect to the composition; (b) myristic acid having a weight percentage in the range of 1-8% with respect to the composition; and (c) hystric acid having a weight percentage in the range of 1-9% with respect to the composition, wherein the lauric acid to myristic acid to hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2.
[0079] In an embodiment of the present disclosure there is provided a stable
cleansing composition comprising: (a) lauric acid having a weight percentage in the range of 5-8% with respect to the composition; (b) myristic acid having a weight percentage in the range of 3-5% with respect to the composition; and (c) hystric acid having a weight percentage in the range of 5-8% with respect to the composition;

wherein the lauric acid to myristic acid to hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2.
[0080] In an embodiment of the present disclosure there is provided a stable
cleansing composition comprising: (a) lauric acid having a weight percentage of 7% with respect to the composition; (b) myristic acid having a weight percentage of 4% with respect to the composition; and (c) hystric acid having a weight percentage of 7% with respect to the composition.
[0081] In an embodiment of the present disclosure there is provided a process for
preparation of a stable cleansing composition comprising: (a) lauric acid; (b) myristic acid; and (c) hystric acid, wherein the lauric acid to the myristic acid to the hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2, said process comprising the steps of: (a) obtaining lauric acid; (b) obtaining myristic acid; and (c) obtaining hystric acid; and (d) contacting lauric acid, myristic acid, and hystric acid in a ratio of 1:1:0.5-1:2.5:2 to obtain the stable cleansing composition.
[0082] In another embodiment of the present disclosure there is provided a process
for preparation of a stable cleansing composition as described herein, comprising the steps of: (a) contacting at least one chelating agent, at least one surfactant, at least one base with water to obtain an aqueous phase; (b) contacting lauric acid, myristic acid, with hystric acid to obtain an oil phase; (c) contacting the water phase and the oil phase followed by homogenization to obtain a first mixture; (d) contacting at least one emollient, at least one humectant, at least one preservative, at least one antioxidant with water to obtain a second mixture; (e) contacting the first mixture and the second mixture to obtain a third mixture; and (f) contacting the third mixture with at least one viscosity enhancer to obtain the stable cleansing composition.
[0083] In an embodiment of the present disclosure there is provided a process for
preparation of a stable cleansing composition as described herein, comprising the steps of: (a) contacting at least one chelating agent, at least one surfactant, at least one base with water at a temperature in the range of 75-80 °C at a stirring speed in the range 2000-4000 rpm to obtain an aqueous phase; (b) contacting lauric acid, myristic acid,

with hystric acid a temperature in the range of 75-80°C to obtain an oil phase; (c) contacting the water phase and the oil phase at a temperature in the range of 50-80 0C followed by homogenization for a period in the range of 5-45 minutes at a stirring speed in the range of 20-100 rpm to obtain a first mixture; (d) contacting at least one emollient, at least one humectant, at least one preservative, at least one antioxidant with water at a temperature in the range of 30-400C for a period in the range of 5-15 minutes at a stirring speed in the range of 10-50 rpm to obtain a second mixture; (e) contacting the first mixture and the second mixture at a temperature in the range of 40-600C for a period in the range of 5-15 minutes at a stirring speed in the range of 10-50 rpm to obtain a third mixture; and (f) contacting the third mixture with viscosity enhancer at a temperature in the range of 30-40 0C for a period in the range of 20-60 minutes to obtain the stable cleansing composition.
[0084] In an embodiment of the present disclosure there is provided a process for
preparation of a stable cleansing composition as described herein, comprising the steps of: (a) contacting ethylene diaminetetraaceetic acid, sodium lauryl ether sulphate, potassium hydroxide with water at a temperature in the range of 75-80 °C at a stirring speed in the range 2000-4000 rpm to obtain an aqueous phase; (b) contacting lauric acid, myristic acid, with hystric acid at a temperature in the range of 75-80 °C to obtain an oil phase; (c) contacting the water phase and the oil phase at a temperature in the range of 50-80 0C followed by homogenization for a period in the range of 5-45 minutes at a stirring speed in the range of 20-100 rpm to obtain a first mixture; (d) contacting glycerol distearate, glycerin, 1,3-dihydroxymethyl-5,5-dimethylhydantoin (DMDM hydantoin), butylated hydroxytoluene with water at a temperature in the range of 30-400C for a period in the range of 5-15minutes at a stirring speed in the range of 10-50 rpm to obtain a second mixture; (e) contacting the first mixture and the second mixture at a temperature in the range of 40-600C for a period in the range of 5-15minutes at a stirring speed in the range of 10-50 rpm to obtain a third mixture; and (f) contacting the third mixture with the potassium chloride at a temperature in the

range of 30-40 0C for a period in the range of 20-60 minutes to obtain stable cleansing composition.
EXAMPLES
[0085] 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 vary.
Example 1
[0086] Table 1 tabulates the ingredients, with working range of weight percentages and exact weight percentage used for the preparation of the stable cleansing composition as described hereinabove in the specification.

Process for preparation of stable cleansing composition:
The stable cleansing composition was prepared by the following process: (a) Ethylene diaminetetraacetic acid, was mixed with hot water in a mixer at a temperature in the range of 75-80 °C with a stirring speed of 3000 rpm, further sodium lauryl ether sulphate, potassium hydroxide were added in the mixer maintaining the temperature in the range of 75-80 °C to obtain aqueous phase; (b) lauric acid, and mystric acid, were mixed with hystric acid separately at a temperature in the range of 75-80oC to obtain an oil phase. (c) The aqueous phase and the oil phase were then transferred to the main mixer at a temperature in the range of 50-80 0C followed by homogenization for a period in the range of 5-45 minutes at a stirring speed in the range of 20-100 rpm to obtain a first mixture; (d) glycerol distearate, cocamide monoethanolamine (CMEA), and water were mixed separately at a temperature in the range of 30-40oC for a period in the range of 5-15 minutes at a stirring speed in the range of 10-50 rpm, and further glycerine, 1,3-dihydroxymethyl-5,5 dimethylhydantoin, butylated hydroxytoluene were added maintaining the temperature in the range of 30-40oC to obtain a second mixture; (e) the second mixture was then added to the first mixture in the main mixer at a temperature in the range of 40-600C for a period in the range of 5-15 minutes at a stirring speed in the range of 10-50 rpm to obtain a third mixture; and (f) finally, potassium chloride was added to the third mixture at temperature in the range of 30-

40oC for a period in the range of 20-60 minutes to obtain a stable cleansing composition.
Example 3
[0088] In order to achieve a fatty acid based hand wash composition which has
consistent viscosity behaviour at different temperature conditions, four separate compositions (A-D) were prepared wherein total weight percentage of total fatty matter was kept constant, i.e., about 18%, but variations in the ratio of fatty acid composition, lauric acid: myristic acid: hystric acid were carried out. All the other components except these three were kept in the same weight percentages as mentioned in example 1.
[0089] The viscosity measurements of hand wash compositions were determined by
using Brookfield viscometer with a no. 15 spindle, and the readings were taken at 50 rpm. Viscosities of the different compositions A, B, C, and D were determined at different temperatures, i.e, 5 °C, 10 °C, 27 °C, and 45 °C so as to evaluate the flow behaviour at these temperatures, and results are tabulated in Table 2.
[0090] It is clear from Table 2 that different ratios of fatty acid compositions
showed varying viscosity measurements with increase in temperature. There was a drastic fall in viscosity of composition C when kept at lower temperature (5-10 °C) which was surprising, as typically the compositions shows higher viscosity profile at

lower temperature compared to room temperature. It was also observed that the
composition had a low viscosity value at low temperature and it increased with
increase in temperature but decreased again with the further rise in temperature, clearly
indicating that this composition was inconsistent with respect to the viscosity
behaviour towards temperature.
[0091] After these preliminary experiments, it was found that when a specific ratio of
lauric acid, myristic acid and hystric acid was used the composition prevailed over the
above stated issue of inconsistent viscosity and provided with the desired viscosity at
different temperature conditions, as is exemplified in compositions A, B, and D, where
they were found to possess acceptable values of viscosity over the entire range of
temperatures.
[0092] The hand wash formulation made out of lauric acid, myristic acid, and hystric
acid, in which total fatty matter was about 18 %, and the ratio of lauric acid: myristic
acid: hystric acid was in the range of 1:1:0.5-1:2.5:2 demonstrated the desired
viscosity profile at different temperature conditions.
[0093] Overall the present disclosure provides a stable cleansing composition (hand
wash) comprising of a combination of lauric acid, myristic acid, and hystric acid in a
specific ratio, as a result of which the problem of inconsistent viscosity behaviour at
different temperature conditions is solved.
[0094] Although the subject matter has been described in considerable detail with
reference to certain examples and implementations thereof, other implementations are
possible.

I/We Claim:
1. A stable cleansing composition comprising:
(a) lauric acid;
(b) myristic acid; and
(c) hystric acid,
wherein the lauric acid to the myristic acid to the hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2.
2. The stable cleansing composition as claimed in claim 1, wherein hystric acid comprises palmitic acid having weight percentage of 55% and stearic acid having weight percentage of 45%.
3. The stable cleansing composition as claimed in claim 1, further comprising at least one surfactant having a weight percentage in the range of 0.1-10% with respect to the composition, wherein the at least one surfactant is selected from the group consisting of cocamide monoethanolamine (CMEA), disodium laureth sulfosuccinate, cocamidopropyl betaine, sodium laureth ether sulphate, and combinations thereof.
4. The stable cleansing composition as claimed in claim 1, further comprising at least one excipient selected from the group consisting of chelating agent, humectant, emollient, preservative, base, viscosity enhancer, colorant, antioxidant, fragrance, and combinations thereof.
5. The stable cleansing composition as claimed in claim 4, wherein the chelating agent has a weight percentage in the range of 0.01-2% with respect to the composition and the chelating agent is selected from the group consisting ethylene diaminetetracetic acid, nitrilotetraacetic acid, β-alaninediacetic acid, ethylenediaminosuccinic acid, aminotrimethylenephosphoric acid, serinediaacetic acid, asparaginediacetic acid, methylglycinediacetic acid diethylenetriamine pentaacetic acid, nitrilotriacetic acid, cyclohexanediamine tetraacetic acid, triethanolamineethylenediamine tetraacetic acid, ethylenetriamine pentaacetic acid, tetraethylenetriamine, ethylenediamine,

diethyltriamine, and combinations thereof; the humectant has a weight percentage in the range of 0.1-5% with respect to the composition and the humectant is selected from the group consisting of glycerin, sorbitol, polyethylene glycol, polypropylene glycol, and combinations thereof; the emollient has a weight percentage in the range of 0.1-2% with respect to the composition, and the emollient is selected from the group consisting of glycol distearate, mineral oil, glyceryl stearate, isopropyl palmitate, shea butter, and combinations thereof.
6. The stable cleansing composition as claimed in claim 4, wherein the preservative has a weight percentage in the range of 0.01-2% with respect to the composition and the preservative is selected from the group consisting of 1,3-dihydroxymethyl-5,5dimethylhydantoin (DMDM hydantoin), methylchloroisothiazolinone (and) methylisothiazolinone, phenoxyethanol, parabens, and combinations thereof; the base has a weight percentage in the range of 0.1-10 % with respect to the composition and the base is selected from the group consisting of potassium hydroxide, sodium hydroxide, and combinations thereof.
7. The stable cleansing composition as claimed in claim 4, wherein the viscosity enhancer has a weight percentage in the range of 0.1-7 % with respect to the composition and the viscosity enhancer is selected from the group consisting of potassium chloride, sodium chloride, and combinations thereof; the anti-oxidant has a weight percentage in the range of 0.01-2% with respect to the composition and the anti-oxidant is selected from the group consisting of butylated hydroxytoluene, tocopheryl acetate, vitamin E, and combinations thereof.
8. A stable cleansing composition comprising:
(a) lauric acid having a weight percentage in the range of 0.1-10% with respect to the composition;

(b) myristic acid having a weight percentage in the range of 0.1-10% with respect to the composition; and
(c) hystric acid having a weight percentage in the range of 0.1-10% with respect to the composition;
wherein the lauric acid to the myristic acid to the hystric acid weight ratio is in the range of 1:1:0.5-1:2.5:2.
9. A process for the preparation of a stable cleansing composition as claimed in claim 1, said process comprising the steps of: (a) obtaining lauric acid; (b) obtaining myristic acid; and (c) obtaining hystric acid; and (d) contacting lauric acid, myristic acid, and hystric acid in a ratio of 1:1:0.5-1:2.5:2 to obtain the stable cleansing composition.
10. A process for the preparation of a stable cleansing composition as claimed in any of the claims 1-8, comprising steps of:

(a) contacting at least one chelating agent, at least one surfactant, at least one base with water to obtain an aqueous phase;
(b) contacting lauric acid, myristic acid, with hystric acid to obtain an oil phase;
(c) contacting the water phase and the oil phase followed by homogenization to obtain a first mixture;
(d) contacting at least one emollient, at least one humectant, at least one preservative, at least one antioxidant with water to obtain a second mixture;
(e) contacting the first mixture and the second mixture to obtain a third mixture; and
(f) contacting the third mixture with viscosity enhancer to obtain the stable cleansing composition.
11. The process as claimed in claim 10, comprising steps of:
(a) contacting at least one chelating agent, at least one surfactant, at least one base with water at a temperature in the range of 75-80 °C at a stirring speed in the range 2000-4000 rpm to obtain an aqueous phase;

(b) contacting lauric acid, myristic acid, with hystric acid a temperature in the range of 75-80°C to obtain an oil phase;
(c) contacting the water phase and the oil phase at a temperature in the range of 50-80 0C followed by homogenization for a period in the range of 5-45 minutes at a stirring speed in the range of 20-100 rpm to obtain a first mixture;
(d) contacting at least one emollient, at least one humectant, at least one preservative, at least one antioxidant with water at a temperature in the range of 30-400C for a period in the range of 5-15 minutes at a stirring speed in the range of 10-50 rpm to obtain a second mixture;
(e) contacting the first mixture and the second mixture at a temperature in the range of 40-600C for a period in the range of 5-15 minutes at a stirring speed in the range of 10-50 rpm to obtain a third mixture; and
(f) contacting the third mixture with viscosity enhancer at a temperature in the range of 30-40 0C for a period in the range of 20-60 minutes to obtain the stable cleansing composition.