EP4654941A1

EP4654941A1 - A cleansing composition for keratin surface and methods thereof

Info

Publication number: EP4654941A1
Application number: EP23809767.9A
Authority: EP
Inventors: Bhairavi SULE
Original assignee: LOreal SA
Current assignee: LOreal SA
Priority date: 2022-12-26
Filing date: 2023-11-08
Publication date: 2025-12-03
Also published as: WO2024142080A1; CN120112264A

Abstract

The present disclosure provides a cleansing composition comprising: a) at least one anionic surfactant selected from amino acid surfactant, sulfonate surfactant, or combinations thereof; b) at least one amphoteric surfactant; c) at least one non-ionic surfactant; and d) at least one non-ionic thickener.

Description

A CLEANSING COMPOSITION FOR KERATIN SURFACE AND METHODS THEREOF

FIELD OF INVENTION

[0001] The present disclosure relates to the field of cosmetic compositions, in particular, relates to transparent serum-like cleansing compositions. The present disclosure also relates to a process of preparing the composition and a method for treating keratin surface.

BACKGROUND OF INVENTION

[0002] An optimized cleansing regimen is the first key step to achieve an acne free skin. An acne prone skin is highly sensitive to soaps, harsh surfactants, and high pH, which are common in basic cleansing products in the market. Therefore, usage of such products worsens the existing acne and is an inappropriate strategy for cleansing acne prone skin.

[0003] Several cleansers have encroached the consumer market claiming to be mild, and with an ability to moisturize the skin. In addition, these cleansers comprise certain anti-acne agents. However, the cocktail of mild cleansing agents and anti-acne agents leads to several shortcomings with respect to product stability and ultimately falls short on consumer’s expectations. Moreover, such cleansers suffer stability issues due to increased temperatures thereby affecting storage stability and shelf-life. It is also necessary for such cleansers to remain homogenous throughout their shelf life.

[0004] Therefore, there is a need to develop a cleansing composition with optimized combination of mild cleansing agents and act as effective anti-acne agents, with desired product texture and stability.

SUMMARY OF THE INVENTION

[0005] In an aspect of the present disclosure, there is provided a cleansing composition comprising: a) at least one anionic surfactant selected from amino acid surfactant, sulfonate surfactant, or combinations thereof, in a total amount ranging from 0.01 wt.% to 40 wt.% relative to the total weight of the composition; b) at least one amphoteric surfactant in a total amount ranging from 2 wt.% to 10 wt.% relative to the total weight of the composition; c) at least one non-ionic surfactant in a total amount ranging from 0.05 wt.% to 10 wt.% relative to the total weight of the composition; and at least one non-ionic thickener.

[0006] In another aspect of the present disclosure, there is provided a personal care product, comprising the cleansing composition comprising: a) at least one anionic surfactant selected from amino acid surfactant, sulfonate surfactant, or combinations thereof, in a total amount ranging from 0.01 wt.% to 40 wt.% relative to the total weight of the composition; b) at least one amphoteric surfactant in a total amount ranging from 2 wt.% to 10 wt.% relative to the total weight of the composition; c) at least one non-ionic surfactant in a total amount ranging from 0.05 wt.% to 10 wt.% relative to the total weight of the composition; and at least one non-ionic thickener.

[0007] In yet another aspect of the present disclosure, there is provided a method for treating keratin surface, the method comprising applying the composition comprising: a) at least one anionic surfactant selected from amino acid surfactant, sulfonate surfactant, or combinations thereof, in a total amount ranging from 0.01 wt.% to 40 wt.% relative to the total weight of the composition; b) at least one amphoteric surfactant in a total amount ranging from 2 wt.% to 10 wt.% relative to the total weight of the composition; c) at least one non-ionic surfactant in a total amount ranging from 0.05 wt.% to 10 wt.% relative to the total weight of the composition; and at least one non-ionic thickener, on the keratin surface to obtain foam, and rinsing off the composition.

[0008] 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

[0009] 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

[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 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] The term "at least one" is used to mean one or more and thus includes individual components as well as mixtures/combinations.

[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 step or group of 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 “about” is used to mean an acceptable error range for the particular value as determined by one of ordinary skill in the art, which can depend in part on how the value is measured or determined, i.e., the limitations of the measurement system. For example, "about" can mean within 1 or more than 1 standard deviation, per the practice in the art. Where particular values are described in the present disclosure, unless otherwise stated the term "about" meaning within an acceptable error range for the particular value should be assumed.

[0017] The term “INCI” is an abbreviation of International Nomenclature of Cosmetic Ingredients, which is a system of names provided by the International Nomenclature Committee of the Personal Care Products Council to identify cosmetic or personal care ingredients.

[0018] All percentages, parts and ratios are based upon the total weight of the compositions of the present disclosure unless otherwise indicated. Ratios, concentrations, amounts, and other numerical data may be presented herein in a range format. It is to be understood that such range format is used merely for convenience and brevity and should be interpreted flexibly to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-ranges encompassed within that range as if each numerical value and sub-range is explicitly recited. For example, a percentage range of about 0.05 % to 10 % should be interpreted to include not only the explicitly recited limits of about 0.05 % to about 10 %, but also to include subranges, such as 0.05% to 5 %, 6 % to 10%, and so forth, as well as individual amounts, including fractional amounts, within the specified ranges, such as 2.84 %, and 3 %, for example.

[0019] 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.

[0020] 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. [0021] The present disclosure relates to a composition, preferably a cleansing composition. The disclosed embodiments of the present disclosure include a cleansing composition, a personal care product comprising the composition and a method for treating keratin surface, such as skin. The various embodiments herein disclose a cleansing composition, particularly a transparent serum-like cleansing composition comprising a combination of surfactants with a non-ionic thickener. The embodiments of the present disclosure provide a cleansing composition which is mild with low pH, suitable to all types of skin, foamable, stable, and transparent over a broader ambit of time and temperatures. In general, majority of the cleansing compositions available in the market are harsh, suffer from stability issues at higher temperatures, and are not transparent enough. Also, the expectations of consumers are increasing in a way, that the cleansing compositions not only cleanses but also provide additional benefits such as acne-control, skin nourishment, brightening effect, skin repair, cooling effect and so on. Hence it has become need of the hour to provide a multifunctional cosmetic cleansing composition which provides improved sensorial and aesthetic properties on single and repeated usage. Accordingly, the present disclosure provides a cleansing composition, which is mild, transparent, foamable providing anti-acne property along with skin repair and skin nourishing effect.

Composition

[0022] The composition, according to an embodiment herein, is a cleansing composition for a keratin surface, in particular the skin. Further, the composition is mild on skin lipids and proteins, provides acne control and further offers enhanced skin benefits, such as oil control, balanced hydration, even skin tone, reduction of acne marks, skin glow and radiance. Moreover, the texture of the composition according to embodiments herein, is serum-like providing easy spread, with optimum foam, suitable for use with minimum of water. The composition according to embodiments herein is mild, transparent, stable even at higher temperatures for a longer period of time. The composition accordingly comprises: a) at least one anionic surfactant selected from amino acid surfactant, sulfonate surfactant, or combinations thereof, in a total amount ranging from 0.01 wt.% to 40 wt.% relative to the total weight of the composition; b) at least one amphoteric surfactant in a total amount ranging from 2 wt.% to 10 wt.% relative to the total weight of the composition; c) at least one non-ionic surfactant in a total amount ranging from 0.05 wt.% to 10 wt.% relative to the total weight of the composition; and d) at least one non-ionic thickener. The composition further comprises at least one active agent selected from a cooling agent, an anti-oxidant, a skin care agent, an exfoliating active, or combinations thereof. The composition additionally includes the use of an additive selected from fragrance, humectant, chelating agent, neutralizer, or combinations thereof. The composition of the present disclosure is transparent for at least 8 weeks at a temperature ranging from 25°C to 50°C. The composition has pH in a range of 5 to 5.5 and viscosity in a range of 400 to 3000 cps preferably 500 to 2500 cps.

Anionic surfactant

[0023] The composition, according to embodiments herein, includes at least one anionic surfactant selected from amino acid surfactant, sulfonate surfactant, or combinations thereof. The term "anionic surfactant" refers to a surfactant comprising, as ionic or ionizable groups, only anionic groups. The surfactants are termed "anionic" when it bears at least one permanent negative charge or when it can be ionized into a negatively charged species, under the conditions of use of the composition of the present disclosure (for example the medium or the pH) and does not comprise any cationic charge.

[0024] Said anionic surfactants are preferably selected from sulfonate surfactants and amino acid surfactants. A combination of these surfactants may be used.

[0025] When the anionic surfactant is in salt form, said salt may be chosen from alkali metal salts, such as the sodium or potassium salt, ammonium salts, amine salts and in particular amino alcohol salts, and alkaline-earth metal salts, such as the magnesium salt. Examples of amino alcohol salts that may be mentioned include monoethanolamine, diethanolamine and triethanolamine salts, monoisopropanolamine, diisopropanolamine or triisopropanolamine salts, 2- amino-2-methyl- 1 -propanol salts, 2-amino-2-methyl-l,3-propanediol salts and tris(hydroxymethyl)aminomethane salts. Alkali metal or alkaline-earth metal salts and in particular the sodium or magnesium salts are preferably used.

[0026] In an embodiment, the anionic surfactant is present in a total amount ranging from 0.01 wt.% to 40 wt.%, preferably from 0.1 wt.% to 20 wt.%, and more preferably from 0.3 wt.% to 10 wt.%, relative to the total weight of the composition. [0027] The sulfonate anionic surfactants that may be used comprise at least one sulfonate function (-SO3H or -SCh-).

[0028] They may be chosen from alkyl sulfonates, alkylarylsulfonates, alkyl sulphosuccinates, alkylsulfoacetates, alkyl ether sulphosuccinates, paraffin sulfonates, acyl isethionates, olefin sulfonates, or combinations thereof; and also the salts of these compounds. The alkyl groups of said compounds comprises 6 to 30 carbon atoms, especially from 12 to 28, preferably 14 to 24 or even from 16 to 22, carbon atoms; the aryl group preferably denotes a phenyl or benzyl group; These compounds possibly being polyoxyalkylenated, in particular polyoxyethylenated, and then preferably comprising from 1 to 50 ethylene oxide units and better still from 2 to 10 ethylene oxide units.

[0029] In an embodiment, the sulfonate surfactant is selected from C6-C24 and especially C12-C20 alkylethersulfosuccinates, especially laurylsulfosuccinates, which are oxyethylenated, preferably disodium laureth sulfosuccinate, which is commercially available under the name TEXAPON SB 3 UNKONS from the company BASF.

[0030] In another embodiment the sulfonate surfactant is selected from C6-C24 and especially C12-C20 alkylsulfoacetates, especially laurylsulfoacetates, more preferably sodium lauryl sulfoacetate. In one embodiment the sulfonate surfactant is selected from alkylethersulfosuccinates, alkylsulfoacetates, or combinations thereof. In an embodiment the sulfonate surfactant is present in an amount ranging from 0.1 wt.% to 15 wt.%, preferably 0.5 to 7.5 wt.% relative to the total weight of the composition.

[0031] The anionic surfactant is selected from amino acid surfactant of formula (I): wherein

Z represents a linear or branched alkyl or alkenyl group having 8 to 22 carbon atoms,

X is hydrogen or methyl group, n is 0 or 1,

Y is selected from hydrogen, -CH₃, -CH(CH₃)₂, -CH₂CH(CH₃)₂, - CH(CH₃)CH₂CH₃, -CH₂C₆H₅, -CH₂C₂H₄OH, -CH₂OH, -CH(OH)CH₃, - (CH₂)₄NH₂, -(CH₂)₃NHC(NH)NH₂, -CH₂C(O)O M⁺’ -(CH₂)₂C(O)OH, and -(CH₂)₂C(O)O’M⁺, and M is a salt-forming cation wherein COO’ is a counter- anion.

[0032] Examples of the amino acid surfactants include but not limited to salts of alanine, arginine, aspartic acid, glutamic acid, glycine, isoleucine, leucine, lysine, phenylalanine, serine, tyrosine, valine, sarcosine, and any mixture thereof. Preferably the amino acid surfactants include glutamates, sarcosinates, or combinations thereof.

[0033] More specifically, the amino acid surfactant is selected from dipotassium capryloyl glutamate, dipotassium undecylenoyl glutamate, disodium capryloyl glutamate, disodium cocoyl glutamate, disodium lauroyl glutamate, disodium stearoyl glutamate, disodium undecylenoyl glutamate, potassium capryloyl glutamate, potassium cocoyl glutamate, potassium lauroyl glutamate, potassium myristoyl glutamate, potassium stearoyl glutamate, potassium undecylenoyl glutamate, sodium capryloyl glutamate, sodium cocoyl glutamate, sodium lauroyl glutamate, sodium myristoyl glutamate, sodium olivoyl glutamate, sodium palmitoyl glutamate, sodium stearoyl glutamate, sodium undecylenoyl glutamate, potassium lauroyl sarcosinate, potassium cocoyl sarcosinate, sodium cocoyl sarcosinate, sodium lauroyl sarcosinate, sodium myristoyl sarcosinate, sodium oleoyl sarcosinate, sodium palmitoyl sarcosinate, ammonium lauroyl sarcosinate, or combinations thereof.

[0034] References can be made to the commercially available amino acid surfactants, for example, acylsarcosinates, for instance the sodium lauroyl sarcosinate sold under the name Sarkosyl NL 97® by the company Ciba or sold under the name Oramix L 30® by the company SEPPIC, the sodium myristoyl sarcosinate sold under the name Nikkol Sarcosinate MN® by the company Nikkol or the sodium palmitoyl sarcosinate sold under the name Nikkol Sarcosinate PN® by the company Nikkol; N-acylglutamates, for instance the triethanolamine monococoylglutamate sold under the name Acylglutamate CT- 12® by the company Ajinomoto and the triethanolamine lauroylglutamate sold under the name Acylglutamate LT-12® by the company Ajinomoto; and any mixture thereof.

[0035] In a preferred embodiment the amino acid surfactant is selected from disodium cocoyl glutamate, disodium lauroyl glutamate, sodium cocoyl glutamate, sodium lauroyl glutamate, sodium cocoyl sarcosinate, sodium lauroyl sarcosinate, or combinations thereof.

[0036] In an embodiment the amino acid surfactant is in a total amount ranging from 0.01 wt.% to 23 wt.%, preferably 0.1 to 10 wt.% relative to the total weight of the composition.

[0037] In an embodiment the anionic surfactant further optionally comprises alkyl phosphates, alkyl ether phosphates, alkyl succinates, acyl taurates, or combinations thereof. Each of these compounds may be present in an amount independently in a range of 0.01 wt.% to 15 wt.%, preferably 3 wt.% to 15 wt.%, and more preferably 5 wt.% to 13 wt.% relative to the total weight of the composition.

Amphoteric surfactant

[0038] The composition, according to embodiments herein, comprises at least one amphoteric surfactant(s).

[0039] The term “amphoteric surfactant” as used herein refers to a surfactant having both anionic groups and cationic groups as ionizable groups. In an embodiment of the present disclosure, an entity is qualified as " amphoteric " when it has the ability to change between anionic properties, the isoelectric neutral stage, and the cationic properties, under the conditions of use of the composition of the present disclosure (medium, pH, for example)

[0040] The amphoteric surfactant(s) used in the composition according to an embodiment herein may be optionally quatemized amine derivatives containing at least one anionic group, for instance a carboxylate, sulfonate, sulfate, phosphate or phosphonate group, and in which the aliphatic group or at least one of the aliphatic groups is a linear or branched chain comprising from 8 to 22 carbon atoms. According to an embodiment of the present disclosure, the amphoteric surfactant is selected from (Cs-C2o)alkylbetaines, sulfobetaine, (Cs-C2oalkyl)amido(C2- Csalkyl)betaine, (C8-C20 alkyl)amido(C2-Cs alkyl) sulfobetaine, (Cs-Cu acyl) amphoacetates, (Cs-Cu acyl)amphoglycinates, or combinations thereof.

[0041] In an embodiment (Cs-C2o)alkylbetaines is selected from behenylbetaine, cetyl betaine, cocoylbetaine, decylbetaine, or combinations thereof. From alkylbetaines, cocoylbetaine is preferred, for example the products sold by the company Rhodia under the tradename Mirataine® BB/FLA.

[0042] In an embodiment, the amphoteric surfactants include the optionally quaternized amine derivatives, of respective structures (III) and (IV) below:

Ra-CON(Z)CH2-(CH2)_m-N⁺(R_b)(Rc)(CH2COO ) (III) in which:

R_a represents a C10-C30 alkyl or alkenyl, preferably, alkyl or alkenyl present in hydrolysed coconut oil, a heptyl group, a nonyl group or an undecyl group,

Rb represents hydrogen, alkyl or P -hydroxy ethyl group,

R_c represents hydrogen, alkyl or carboxymethyl group; m is equal to 0, 1 or 2,

Z represents a hydrogen atom or a hydroxy ethyl or carboxymethyl group;

Ra -CON(Z)CH2-(CH2)m -N(B)(B') (IV) in which:

B represents -CH2CH2OX', with X' representing -CH2-COOH, CH2- COOZ’, -CH2CH2-COOH, -CH2CH2-COOZ’, or a hydrogen atom,

B' represents -(CH2)z-Y', with z = 1 or 2, and Y' representing -COOH, -COOZ’, -CH2-CHOH-SO3H or -CH2-CHOH-SO3Z’, m' is equal to 0, 1 or 2,

Z represents a hydrogen atom or a hydroxyethyl or carboxymethyl group,

Z’ represents an ion resulting from an alkali or alkaline-earth metal, such as sodium, potassium or magnesium; an ammonium ion; or an ion resulting from an organic amine and in particular from an amino alcohol, such as monoethanolamine, diethanolamine and triethanolamine, monoisopropanolamine, diisopropanolamine or triisopropanolamine, 2-amino-2-methyl-l -propanol, 2-amino-2-methyl-l,3- propanediol and tris(hydroxymethyl)aminomethane,

R_a' represents a C10-C30 alkyl or alkenyl group, preferably alkyl or alkenyl present in hydrolysed linseed oil or coconut oil, an alkyl group, in particular a C17 alkyl group, and its iso form, or an unsaturated C17 group.

[0043] In particular, according to an embodiment, the amphoteric surfactants may be of betaine-based amphoteric surfactant, for example, (Cs-C2o)alkylbetaines, sulfobetaines, (C8-C20 alkyl)amido(C2-C8 alkyl)betaines and (C8-C20 alkyl)amido(C2-Cs alkyl)sulfobetaines. Preferably, the amphoteric surfactants are chosen from (Cs-C2o)alkylbetaines, (C8-C2o)alkylamido(C2-C8)alkylbetaines, or combinations thereof. Preferably, the amphoteric surfactant is chosen from cocamidopropyl betaine (CAPB), cocoy Ibetaine, or combinations thereof.

[0044] In an embodiment, the amphoteric surfactant is present in the composition in an amount ranging from in a total amount ranging from 2 wt.% to 10 wt.%, preferably 3 wt.% to 7 wt.%, and more preferably 4 wt.% to 6 wt.%, relative to the total weight of the composition. Non-ionic surfactant

[0045] The composition, according to embodiments herein, provides a composition comprising at least one non-ionic surfactant. In an embodiment, the non-ionic surfactant is selected from alkyl polyglycoside, acyl glucamides, fatty amides, oxyalkylenated glycerol esters, or combinations thereof.

[0046] The non-ionic surfactant includes an alkyl polyglycoside is of formula (II):

RiO-(R₂O)t -(G)_v (II) wherein,

Ri is a linear or branched alkyl or alkenyl radical comprising 6 to 24 carbon atoms, preferably 8 to 18 carbon atoms, or an alkylphenyl radical whose linear or branched alkyl radical comprises 6 to 24 carbon atoms and preferably 8 to 18 carbon atoms,

R₂ is an alkylene radical comprising 2 to 4 carbon atoms,

G is a sugar unit comprising 5 to 6 carbon atoms, t is a value ranging from 0 to 4 and preferably 0 to 2, and v is a value ranging from 1 to 10 and preferably 1 to 4.

[0047] The glucoside bonds between the sugar units are generally of 1-6 or 1-4 type and preferably of 1-4 type. Preferably, the alkylpolyglycoside surfactant is an alkylpoly gluco side surfactant, more preferably the alkylpolyglucoside is Cs/Ci6 alkyl polyglycosides and especially selected from decyl glucosides, caprylyl/capryl glucosides, or combinations thereof.

[0048] Among the commercial products, mention may be made of the products sold by the company Cognis under the names Plantaren® (600 CS/U, 1200 and 2000) or Plantacare® (818, 1200 and 2000); the products sold by the company SEPPIC under the names Oramix CG 110 and Oramix ® NS 10; the products sold by the company BASF under the name Lutensol GD 70, or else the products sold by the company Chem Y under the name AGIO LK.

[0049] In an embodiment the non-ionic surfactant present in the composition includes acyl glucamides selected from lauroyl/myristoyl methyl glucamide, capryloyl/capryl methyl glucamide, lauroyl methyl glucamide, myristoyl methyl glucamide, capryloyl methyl glucamide, capryl methyl glucamide, cocoyl methyl glucamide, capryloyl/caproyl methyl glucamide, cocoyl methyl glucamide, lauryl methylglucamide, oleoyl methylglucamide oleate, stearoyl methylglucamide stearate, sunfloweroyl methylglucamide, tocopheryl succinate methylglucamide, or combinations thereof. Preferably the acyl glucamide is lauroyl/myristoyl methyl glucamide, commercially available as Glucotain Flex.

[0050] In other embodiments the non-ionic surfactant also includes fatty amides, oxyalkylenated glycerol esters, or combinations thereof. In an embodiment, the fatty amide is selected from cocamide MEA (coco monoethanolamide) and cocamide MIPA (coco monoisopropanolamide), cocamide DEA (coco diethanolamide), cocamide DIPA (coco diisopropanolamine), lauramide MEA (lauryl monoethanolamide), lauramide DEA (lauryl diethanolamide), or combinations thereof.

[0051] In one another embodiment the non-ionic surfactant may also be chosen from oxyalkylenated glycerol esters. The oxyalkylenated glycerol esters are in particular the polyoxyethylenated derivatives of esters of glycerol and of a fatty acid and of their hydrogenated derivatives. These oxyalkylenated glycerol esters can be chosen, for example, from esters of glycerol and of fatty acids which are hydrogenated and oxyethylenated, such as PEG-200 hydrogenated glyceryl palmate, sold under the name Rewoderm LI-S 80 by the company Goldschmidt; oxyethylenated glycerol cocoates, such as PEG-7 glyceryl cocoate, sold under the name Tegosoft GC by the company Goldschmidt, and PEG-30 glyceryl cocoate, sold under the name Rewoderm LI-63 by the company Goldschmidt; and mixtures thereof.

[0052] In an embodiment, the non-ionic surfactant is in a total amount ranging from 0.05 wt.% to 10 wt.%, preferably 0.1 wt.% to 6 wt.%, more preferably 0.2 wt.% to 3 wt.% to relative to the total weight of the composition.

Non-ionic thickener [0053] The composition, according to the present disclosure, is a transparent cleansing composition, and it comprises at least one non-ionic thickener that provides desirable textural characteristics to the composition.

[0054] In an embodiment, at least one non-ionic thickener is present in the composition. In another embodiments, at least one thickener is selected from synthetic polymeric thickeners. In other embodiments, at least one thickener is selected from thickeners that form a clear composition providing cleansing, and rinsability. In a preferred embodiment, the non-ionic thickener is selected from PEG (polyethylene glycol)- 150-distearate, PEG- 150 pentaerythrityl tetrastearate, or combinations thereof.

[0055] In an embodiment, the non-ionic thickener is in a total amount ranging from 0.1 wt.% to 2.5 wt.%, preferably 1 wt.% to 2 wt.% relative to the total weight of the composition.

Active agent

[0056] The composition, according to embodiments herein, also include at least one active agent selected from a cooling agent, an anti-oxidant, a skin care agent, an exfoliating active, or combinations thereof. The active agent is chosen in a such way to provide the enhanced cosmetic effect such as cooling effect, anti-exfoliating, anti-microbial, soft peeling, anti-oxidating, skin-care, skin repair, sebum control, anti-acne, and so on. The composition, according to embodiments herein, is suitable for solubilization of at least one active agent, in particular for solubilization of hydrophobic active agents, yet provide a clear transparent composition.

[0057] The composition, according to embodiments herein, comprises one or more active agent selected from menthol, methyl diisopropyl propionamide, menthyl lactate, menthone glycerin acetal, menthyl lactate, ethyl menthane carboxamide, menthoxypropanediol, vitamin E, salicylic acid, beta hydroxybutanoic acid, tropic acid, trethocanic acid, panthenol, lactic acid, glycolic acid, mandelic acid, citric acid, malic acid, tartaric acid, lactobionic acid, gluconic acid or ester thereof, zinc gluconate, zinc sulfate, zinc salt of pyrrolidone carboxylic acid, vitamin B2, vitamin B6, vitamin C, ascorbyl glucoside, ascorbyl tetraisopalmitate, magnesium ascorbyl phosphate, phenoxyethanol, niacinamide, or combinations thereof.

[0058] The amount of at least one active agent according to embodiments herein may vary, independently. In an embodiment the composition comprises at least one active agent in a total amount ranging from 0.01 wt.% to 20 wt.%, preferably 0.05 wt.% to 13 wt.% relative to the total weight of the composition.

Additives

[0059] The composition, according to embodiments herein, may also include one or more additives, particularly cosmetic additives, which may be notably chosen from a fragrance, humectant, chelating agent, neutralizer, or combinations thereof. Examples of additives include but not limited to sorbitol, mannitol, xylitol, maltitol, maltitol syrup, lactitol, erythritol, isomalt, glycerin, propylene glycol, tetrasodium glutamate diacetate, ethylene diamine tetraacetic acid, essential oils, and so on. It is understood that a person skilled in the art will take care to select the optional additives and/or the amount thereof such that the advantageous properties of the composition used according to the disclosure are not, adversely affected by the envisaged addition. All such embodiments including the optional additives are understood to be included within the scope of the present disclosure.

Water

[0060] The composition, according to embodiments herein, includes water in a weight range of 30 to 90 wt %, preferably 40 to 85 wt %, more preferably 50 to 80 wt % by weight with respect to total weight of the composition.

Product

[0061] One embodiment of the present disclosure relates to a product preferably a personal care product comprising the composition as disclosed herein. In another embodiment the product may comprises one or more active agent and optionally an additive. The other embodiment relates to a transparent product with pH in a range of 5 to 5.5. Methods and use

[0062] According to an embodiment, the present disclosure relates to a method of treating a keratin material, comprising the step of applying the composition of the present disclosure to the keratin material. In another embodiment, the present disclosure relates to a method of treating skin, or hair.

[0063] Preferably the present disclosure relates to a method for treating acne on the skin, comprising the step of applying the composition of the present disclosure on the skin.

[0064] According to an embodiment, the present disclosure also relates to the use of the composition of the present disclosure for treating or cleansing a keratin surface such as skin or hair. In another embodiment, the present disclosure relates to the use of the composition of the present disclosure as a make-up remover.

[0065] According to an embodiment, the present disclosure also relates to the use of the composition of the present disclosure for treating acne on the skin.

[0066] Although the present disclosure has been described in considerable detail with reference to certain embodiments and implementations thereof, other embodiments are possible to cover the modifications and variations of the present disclosure.

Examples

[0067] 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. [0068] In the following examples, unless indicated otherwise, the percentages are indicated by weight of the total weight of the composition. The percentages are weight percentages by active ingredient, or active material.

Example 1

Cleansing compositions

[0069] Cleansing compositions C(l) to C(6) in accordance with the present disclosure as provided in Table 1 were prepared as described below.

[0070] The process involved blending ingredients of phase A with water at a temperature of about 75 to 80°C to obtain the first mixture. The ingredients of phase B were added at about 75 to 80°C to the main vessel along with the first mixture and was homogenized to obtain the second mixture. The ingredients of phase C were then added to the second mixture at about 75 to 80°C and allowed for complete mixing and cooling below 65°C to obtain a third mixture. Phase D ingredients are premixed and was then added to the third mixture, followed by addition of phase E ingredients, at about 45 to 50°C and were allowed to blend under continuous stirring, resulting in the clear homogenous composition.

[0071] Similarly, the comparative compositions CP(1) to CP(10) were prepared with the set of ingredients in their corresponding weight % as indicated in Table 2 below.

Table 1

Table 2

Example 2

Evaluation of the compositions

Viscosity measurements [0072] The compositions as prepared in Example 1 were subjected to viscosity measurements using LR Lamy Rheology instrument, Rheometer RM200 Touch with M3 spindle. Each of the test composition was filled in the cup attached to the rim of the instrument and the viscosity was measured. The final reading at 600 seconds was recorded.

Determination of foam volume

[0073] 1% sample solution comprising the test composition with hard water was prepared. The sample solution was mixed under constant speed for about a time period of 60 seconds and was then transferred to a measuring cylinder. The foam was levelled and the foam volume for each of the sample solution was noted. pH measurement

[0074] pH of the test compositions were measured using pH instrument of Mettlor Toledo, calibrated with buffer solution. The pH of the compositions were measured at room temperature, at about 25°C.

Measurement of trans epidermal water loss (TEWL)

[0075] The surface of the Stratum Corneum (SC) samples were cleaned with isooctane and placed in sample holders of TEWL. The sample holders were then immersed in Evian water to wet the SC and was then dried in ambient atmosphere for at least Ih. The surface of the SC sample was pre-wetted with 10 pl per solution of a mixture of water and n-propanol (8:2) before being conditioned for 8h in a glove box in controlled atmosphere (30°C, 30%RH). Control TEWL measurement "TO" were recorded.

[0076] SC samples were then immersed in the test compositions diluted 4-fold (25%) with the Evian water for 2h with gentle stirring on shaker and rinsed by three successive washes of Evian water. The samples were left at room temperature for at least 4h to ensure drying. The SC samples were then placed in the temperature and humidity control chamber for equilibrium at 30°C and 30% RH. After overnight equilibrium, TEWL measurements “Tl” were recorded.

Zein score

[0077] The harshness of surfactants in the compositions were evaluated by employing the zein solubility test, wherein, zein, a yellow corn protein, similar to keratin present in the skin, with limited solubility in water is denatured (solubilized) by the surfactant. The ability of surfactants to denature and solubilize zein had been linked to their skin-irritation potential. The soluble zein protein was measured by modified Lowry method using spectrophotometer. The absorption was correlated with the solubility of the zein protein which in turn was considered as a measure of the irritation potential or the harshness of the product. The harshness of the analyzed samples were graded and compared using a 1.5% solution of sodium laureate sulfate (SLS) as a positive control. The harshness data for the test compositions were expressed in terms of percentage of the SLS score.

Appearance and Textural analysis

[0078] The compositions were analysed for their appearance and texture using Datacolor light box. The test samples were placed in transparent glass beaker, against Black background in the datacolor light box. The light source was adjusted, and each of the test compositions were observed for any particles or haziness or translucency.

Consumer feedback

[0079] Consumer study was conducted to understand the cosmetic potential of (Dry or wet face leave on) the compositions. Study was conducted on 16 consumers, aged 18-24 years. The consumers were asked to provide feedback on the texture, radiance, and glow.

Instrumental Test

[0080] Antimicrobial activity of the composition was evaluated by standard protocol ASTM 2783 using test organism Cutibacterium acnes ATCC 11827 at a temperature of 25°C±1°C. The test compositions were NEAT C(7) and C(7) with 75% dilution in water. The % germ kill activity was measured for a time period of 1 min.

Example 3

Results

Viscosity measurements [0081] The viscosities of the compositions of the present disclosure and the comparative compositions were determined for various time period and at varying temperatures. The viscosity values obtained are as shown in Table 3 below.

Table 3 ND-not determined

[0082] It could be observed that the viscosities of the compositions of the present disclosure are within the desired range of 400 to 3000 cps, whereas the comparative compositions exhibited very low viscosity, hence was free flowing and not suitable for easy spread and retention on the skin. The favourable viscosity of the composition of the present disclosure, could be attributed to the combination of the anionic and non-ionic surfactants. It could be noted that CP(1) and CP(2) were devoid of non-ionic surfactants and the CP(3) was devoid of anionic surfactant such as sulphonate surfactant unlike the compositions of the present disclosure. The compositions of the present disclosure was found to exhibit serum like appearance with desired viscosity for easy spreading on wet as well as dry skin. Also, the composition of the present disclosure provided the possibility of leaving the composition on the skin for a time period of 1 to 5 minutes, providing ample time for skin nourishment.

Determination of foam volume

[0083] Foam volume of the compositions of the present disclosure and the comparative compositions were measured and are tabulated below. It was observed that the combination of surfactants such anionic, amphoteric and non-ionic surfactants as disclosed herein provided better foam volume in comparison to the composition without the combination of these surfactants.

Table 4 pH measurement

[0084] pH of the compositions measured are shown in Table 5 below, wherein the compositions were all within the favorable pH in a range of 5 to 5.5 even at increased temperatures.

Table 5

TEWL and Zein measurement

[0085] The composition of the present disclosure and the comparative composition were subjected to TEWL analysis and zein measurement as per protocol explained above and the corresponding values are indicated in Table 6 below. [0086] The composition of the present disclosure with said surfactant combination did not hamper the integrity of SC barrier and hence showed less TEWL. Further the composition of the present disclosure was milder on skin proteins as it showed lower Zein scores in comparison with the composition without the desired the combination of the surfactants.

Table 6

Appearance and Textural analysis

[0087] Table 7 indicate the observations made for the appearance and the texture of the compositions. It could be clearly understood that the compositions of the present disclosure were transparent and stable, even at higher temperatures for a longer duration of time, thereby providing increased storage stability and shelf-life.

Table 7

Consumer feedback

[0088] 15 out of 16 consumers preferred the composition of the present disclosure against their regular cleansers for benefits on radiance, glow, acne management. Consumers perceived incremental benefits on acne and radiance with the use of the composition of the present disclosure.

Instrumental Test

[0089] The antimicrobial activity study of the composition of the present disclosure, confirmed that the composition was able to efficiently kill the microbes, as a NEAT as well as in its diluted form as shown in Table 8 below. Thus the cleansing composition even when diluted was found to effectively killing microbes, thereby confirming its enhanced cosmetic behaviour.

Table 8 [0090] Accordingly, it was observed that the use of specific ingredients in the disclosed weight ranges as disclosed in various embodiments herein facilitated in achieving the cosmetic composition with desired sensorial properties and stability.

ADVANTAGES OF THE PRESENT DISCLOSURE [0091] The present disclosure provides a cleansing transparent composition comprising a combination of at least one anionic surfactant, at least one amphoteric surfactant, at least one non-ionic surfactant with at least one non-ionic thickener. The composition comprises optimized weight ratios of said surfactants which enables complete solubilization of wide range of actives. Further, the composition comprising the optimized level of actives along with the additives, offers multiple skin benefits. The composition is transparent, of desirable serum like texture for easy spreading, with optimized pH and desired foamability. The composition is transparent and stable at higher temperatures for a longer period of time, hence exhibits enhanced storage stability and shelf-life. The composition is mild suitable for all skin types and provides oil control to prevent acne. The composition comprises treats acne as well as reduces acne marks. The composition provides instant and long-lasting hydration and ensures a smooth and even skin tone over its persistent use.

Claims

I/We Claim:

1. A cleansing composition comprising: at least one anionic surfactant selected from amino acid surfactant, sulfonate surfactant, or combinations thereof, in a total amount ranging from 0.01 wt.% to 40 wt.% relative to the total weight of the composition; at least one amphoteric surfactant in a total amount ranging from 2 wt.% to 10 wt.% relative to the total weight of the composition; at least one non-ionic surfactant in a total amount ranging from 0.05 wt.% to 10 wt.% relative to the total weight of the composition; and at least one non-ionic thickener.

2. The composition as claimed in claim 1, wherein the composition comprises at least one active agent.

3. The composition as claimed in claim 1, wherein the anionic surfactant further comprises alkyl phosphates, alkyl ether phosphates, alkyl succinates, acyl taurates, or combinations thereof.

4. The composition as claimed in claim 1, wherein the anionic surfactant is preferably in a total amount ranging from 0.1 wt.% to 20 wt.%, and more preferably from 0.3 wt.% to 10 wt.%, relative to the total weight of the composition.

5. The composition as claimed in claim 1, wherein the sulfonate surfactant is selected from alkylsulfonates, alkylarylsulfonates, alkyl sulphosuccinates, alkylsulfoacetates, alkyl ether sulphosuccinates, paraffin sulfonates, acyl isethionates, olefin sulfonates, or combinations thereof.

6. The composition as claimed in claim 1, wherein the sulfonate surfactant is in a total amount ranging from 0.1 wt.% to 15 wt.%, preferably 0.5 to 7.5 wt.% relative to the total weight of the composition.

7. The composition as claimed in claim 1, wherein the amino acid surfactant is preferably selected from dipotassium capryloyl glutamate, dipotassium undecylenoyl glutamate, disodium capryloyl glutamate, disodium cocoyl glutamate, disodium lauroyl glutamate, disodium stearoyl glutamate, disodium undecylenoyl glutamate, potassium capryloyl glutamate, potassium cocoyl glutamate, potassium lauroyl glutamate, potassium myristoyl glutamate, potassium stearoyl glutamate, potassium undecylenoyl glutamate, sodium capryloyl glutamate, sodium cocoyl glutamate, sodium lauroyl glutamate, sodium myristoyl glutamate, sodium olivoyl glutamate, sodium palmitoyl glutamate, sodium stearoyl glutamate, sodium undecylenoyl glutamate, potassium lauroyl sarcosinate, potassium cocoyl sarcosinate, sodium cocoyl sarcosinate, sodium lauroyl sarcosinate, sodium myristoyl sarcosinate, sodium oleoyl sarcosinate, sodium palmitoyl sarcosinate, ammonium lauroyl sarcosinate, or combinations thereof.

8. The composition as claimed in claim 1, wherein the amino acid surfactant is in a total amount ranging from 0.01 wt.% to 23 wt.%, preferably 0.1 to 10 wt.% relative to the total weight of the composition.

9. The composition as claimed in claim 1, wherein the amphoteric surfactant is selected from (Cs-C2o)alkylbetaines, sulfobetaine, (C8-C20 alkyl)amido(C2-Cs alkyl)betaine, (C8-C20 alkyl)amido(C2-Cs alkyl) sulfobetaine, (Cs-Cu acyl) amphoacetates, (Cs-Cu acyl)amphoglycinates, or combinations thereof, preferably (C8-C20 alkyl)amido(C2-Cs alkyl)betaine.

10. The composition as claimed in claim 1, wherein the amphoteric surfactant is preferably in a total amount ranging from 3 wt.% to 7 wt.%, and more preferably 4 wt.% to 6 wt.%, relative to the total weight of the composition.

11. The composition as claimed in claim 1, wherein the non-ionic surfactant is selected from alkyl polyglycoside, acyl glucamides, fatty amides, oxyalkylenated glycerol esters, or combinations thereof.

12. The composition as claimed in claim 11, wherein the alkyl polyglycoside is of formula (II):

RiO-(R₂O)t -(G)_v (II) wherein,

R₂ is an alkylene radical comprising 2 to 4 carbon atoms,

13. The composition as claimed in claim 11, wherein the acyl glucamide is selected from lauroyl methyl glucamide, myristoyl methyl glucamide, capryloyl methyl glucamide, capryl methyl glucamide, cocoyl methyl glucamide, caproyl methyl glucamide, lauryl methylglucamide, oleoyl methylglucamide oleate, stearoyl methylglucamide stearate, sunfloweroyl methylglucamide, tocopheryl succinate methylglucamide, or combinations thereof.

14. The composition as claimed in claim 1, wherein the non-ionic surfactant is preferably in a total amount ranging from 0.1 wt.% to 6 wt.%, more preferably 0.2 wt.% to 3 wt.% to relative to the total weight of the composition.

15. The composition as claimed in claim 1, wherein the non-ionic thickener is selected from PEG (polyethylene glycol)- 150-distearate, PEG- 150 pentaerythrityl tetrastearate, or combinations thereof.

16. The composition as claimed in claim 1, wherein the non-ionic thickener is in a total amount ranging from 0.1 wt.% to 2.5 wt.%, preferably 1 wt.% to 2 wt.% relative to the total weight of the composition.

17. The composition as claimed in claim 2, wherein the active agent is selected from a cooling agent, an anti-oxidant, a skin care agent, an exfoliating active, or combinations thereof.

18. The composition as claimed in claim 2, wherein the active agent is in a total amount ranging from 0.01 wt.% to 20 wt.%, preferably 0.05 wt.% to 13 wt.% relative to the total weight of the composition.

19. The composition as claimed in claim 1, further comprising at least one additive selected from fragrance, humectant, chelating agent, neutralizer, or combinations thereof.

20. The composition as claimed in claim 1, wherein the composition comprises at least one solvent, preferably water, in a total amount ranging from 30 wt.% to 90 wt.% , preferably 40 wt.% to 85 wt.% , more preferably 50 wt.% to 80 wt.% , relative to the total weight of the composition.

21. The composition as claimed in claim 1, wherein the composition is transparent for at least 8 weeks at a temperature ranging from 25°C to 50°C.

22. The composition as claimed in claim 1, wherein the composition has pH in a range of 5 to 5.5 and viscosity in a range of 400 to 3000 cps, preferably 500 to 2500 cps.

23. A personal care product, comprising the cleansing composition as claimed in claim 1.

24. The personal care product as claimed in claim 23, wherein the product is transparent with pH in a range of 5 to 5.5.

25. A method for treating keratin surface, the method comprising applying the composition as claimed in claim 1 on the keratin surface to obtain foam and rinsing off the composition.

26. A method for treating acne on skin, the method comprising applying the composition as claimed in claim 1 on the skin.