Composition for skin care

Abstract

A composition for treating keratin materials, in particular for the skin, comprising: (a) at least one polysaccharide; (b) at least one amphoteric surfactant; and (c) at least one cosurfactant. The composition is used as an emulsion for treatment, providing a transforming sensation to the skin.

Description

Technical Field

[0001] This invention relates to compositions for treating keratin materials, particularly for use on skin, especially for providing a transformative sensation to the skin, and exhibiting good stability. Furthermore, this invention relates to the uses of this composition. Background Technology

[0002] The skin acts as a natural barrier between the internal and external environments, and therefore plays a vital role in important biological functions, such as protecting against mechanical and chemical damage, microbial damage, and ultraviolet radiation damage. However, the health and appearance of the skin can be deteriorated by environmental factors, genetic makeup, nutrition, and sun exposure.

[0003] Transformation sensation, along with stability, is considered one of the most desirable properties in the cosmetics / personal care industry.

[0004] Furthermore, the formulation of environmentally friendly cosmetics, designed and developed with environmental concerns in mind, is becoming an important target in an effort to address global challenges.

[0005] Therefore, more sustainable solutions must be developed to address these environmental problems.

[0006] In this context, it is crucial to develop novel cosmetic compositions with a better carbon footprint, especially by promoting the use of renewable raw materials and / or materials with a good naturalness index and / or natural sources, and more particularly plant-based materials, while reducing the use of petrochemical-derived compounds.

[0007] Therefore, consumers expect new and improved compositions that are more sustainable and provide personal care / makeup products with good stability and an improved transformative feel. Invention Overview The inventors have discovered a composition, preferably used for treating keratin materials, particularly for skin, comprising: (a) at least one first polysaccharide; (b) at least one amphoteric surfactant; and (c) at least one co-surfactant selected from linear fatty alcohols having 14-30 carbon atoms; wherein the monomer of the first polysaccharide has both a main chain and a side chain, and has at least one ionic group or at least one ionizable group in the main chain, and the composition exhibits good stability and is capable of imparting excellent conversion sensation.

[0009] Another subject of the invention is the use of the compositions according to the invention for treating keratin materials, particularly skin. This use can itself manifest as a method for treating keratin materials, particularly skin, comprising the step of applying the mixture to said keratin material.

[0010] Another subject of the present invention is the use of the compositions according to the invention in the preparation of cosmetics for treating keratin materials, particularly skin.

[0011] Preferably, the composition according to the invention is in the form of a liquid emulsion, such as a water-in-oil (W / O) emulsion, an oil-in-water (O / W) emulsion, an oil-in-water-in-oil (O / W / O) emulsion, or a water-in-oil-in-water (W / O / W) emulsion, comprising an aqueous phase and an oil phase, and optionally further comprising an acceptable active agent or the like.

[0012] Other features and advantages of the present invention will become more apparent after reading the following description and embodiments.

[0013] Detailed description of this disclosure Unless otherwise stated, throughout this specification (including the claims), the term "comprising one" shall be understood to be synonymous with "comprising at least one".

[0014] Throughout this specification (including the claims), embodiments defined with “comprising” or similar terms should be understood to encompass preferred embodiments defined with “basically consisting of” and preferred embodiments defined with “consisting of”.

[0015] Furthermore, the expression "at least one" as used in this specification is equivalent to the expression "one or more," including one, two, three, if any.

[0016] The terms “a”, “an”, and “the” are understood to encompass both plural and singular forms.

[0017] When referring to a numerical value, the term "about" specifically refers to a measurement rounded to that value using standard conventions for rounding numbers. For example, "about 1.5" means 1.45 to 1.54. All numerical values ​​described herein may be modified with the term "about" if the above meaning is desired, or the term may be omitted, whether or not the term "about" is explicitly stated in conjunction with any particular value in the specification (or not present).

[0018] All ranges and values ​​disclosed herein are inclusive and composable. For example, any value or point described herein that falls within the ranges described herein can be used as a minimum or maximum value to derive subranges, etc.

[0019] As used herein, the term "keratin material" refers to skin and lips. By "skin," we intend to mean all the skin of the body, including the scalp. Preferably, the "keratin material" according to the invention is skin. Still preferably, the keratin material is for the face or neck, especially the face.

[0020] As used herein, the term "ionizable group" refers to any group that can be in ionic form, either by its inherent chemical properties or as a function of the medium in which it exists and / or the pH of the medium.

[0021] The term "transformation sensation" is understood to refer to the phenomenon where a product (e.g., in the form of a gel or lotion, which may even be thick) transforms into a fluid or even water upon application to the skin, as if it were found on the skin. During this transformation, the aqueous film is visible (visible water droplets).

[0022] First polysaccharide The composition according to the invention comprises at least one first polysaccharide.

[0023] The first polysaccharide is a polysaccharide in which its monomers have both a main chain and side chains, and have at least one ionic group or at least one ionizable group in the main chain, wherein the first polysaccharide has the following formula (I): (I) in -R indicates that the sugar is selected from rhamnose, mannose, galactose, arabinose, xylose, fucose, or... Groups; -M belongs to an ionic group or an ionizable group, preferably representing a counter ion derived from an alkali metal or alkaline earth metal, or a counter ion derived from an inorganic ammonium or organic amine; preferably, M represents a counter ion selected from sodium, potassium, calcium, magnesium, or ammonium ions or a counter ion derived from an organic amine. -n represents at least 200, preferably at least 1000, especially at least 3000, or less than 20000, especially less than 10000, or 500 to 10000, especially 1000 to 7000.

[0024] Preferably, the first polysaccharide is selected from the following polysaccharides: diutan gum, welan gum, and mixtures thereof; diutan gum is preferred.

[0025] Preferably, the first polysaccharide is present in an amount of about 0.01% to about 5% by weight, preferably about 0.05% to about 3% by weight, or about 0.08% to about 1% by weight relative to the total weight of the composition.

[0026] Amphoteric surfactants The compositions according to the present invention comprise at least one amphoteric surfactant.

[0027] For the purposes of this invention, the term "amphoteric surfactant" is intended to encompass surfactants that are commonly referred to as both "amphoteric surfactants" and "amphoteric ionic surfactants".

[0028] Preferably, the amphoteric surfactant is selected from (C8-C20) alkyl betaine, (C8-C20) alkylamide (C1-C6) alkyl betaine (e.g., cocamidopropyl betaine); sulfobetaine (also known as sulftaines), such as (C8-C20) alkyl sulfobetaine, (C8-C20) alkylamide (C1-C6) alkyl sulfobetaine; amino acids (e.g., glycine); (C8-C20) alkyl polyaminocarboxylates, (C8-C20) alkyl amphoteric acetates, (C8-C20) alkyl amphoteric diacetates; phospholipids (e.g., lecithin, hydrogenated lecithin), their salts, their derivatives, and mixtures thereof.

[0029] More preferably, the amphoteric surfactant is selected from phospholipids (e.g., lecithin, hydrogenated lecithin), their salts, their derivatives, and mixtures thereof.

[0030] As (C8-C20) alkyl betaines, particularly noteworthy are cocobetain, such as the product sold by Cognis under the name DEHYTON; lauryl betaine, such as the product sold by Clariant under the name GENAGEN; oxyethylidene lauryl betaine (10EO), such as the product sold by Shin Nihon Rica under the name LAURYLETHER (10EO); and oxyethylidene stearyl betaine (10EO), such as the product sold by Shin Nihon Rica under the name STEARYLETHER (10EO).

[0031] Among (C8-C20) alkylamide (C1-C6) alkyl betaines, for example, cocamidopropyl betaine can be mentioned, such as products sold by Sanyo under the name LEBON 2000, products sold by Albright & Wilson under the name EMPIGEN, products sold by EVONIK GOLDSCHMIDT under the names Tego Betain F 50 and CK D, or further those sold as mixtures with glyceryl lauryl esters, such as the commercial reference names TegoBetain HS or Antil HS 60 from EVONIK GOLDSCHMIDT, and lauramideopropyl betaine, such as products sold by Witco under the name REWOTERIC.

[0032] As sulfobetaines, (C8-C20)alkylsulfobetaine; (C8-C20)alkylamide (C1-C6)alkylsulfobetaine; (C8-C20)alkylamide (C1-C6)alkylhydroxysulfobetaine, such as cocoylamidopropylhydroxysulfobetaine, for example, a product sold by Croda under the name CROSULTAIN.

[0033] As (C8-C20) alkyl polyaminocarboxylates (APACs), examples include sodium cocoyl polyaminocarboxylate, such as products sold by AkzoNobel under the names AMPHOLAK 7 and AMPHOLAK 7; sodium stearyl polyamide carboxylate, such as products sold by AkzoNobel under the name AMPHOLAK 7 TX / C; and sodium carboxymethyl oleyl polypropylamine, such as products sold by AkzoNobel under the name AMPHOLAK.

[0034] As C8-C20 alkyldiamphoacetate, examples include N-cocoyl-N-carboxymethoxyethyl-N-carboxymethylethylenediamine N-disodium (CTFA name: disodium cocamphodiacetate), such as the product sold by Rhodia Chimie under the name MIRANOL C2M CONCENTRE, and N-cocoyl-N-hydroxyethyl-N-carboxymethylethylenediamine N-sodium (CTFA name: sodium cocamphoacetate), such as the product sold by Evonik Goldschmidt under the name Rewoteric AM C.

[0035] As C8-C20 alkylamphodiacetates, disodium cocoamphodiacetate, disodium lauroylamphodiacetate, disodium hexanoylamphodiacetate, disodium octanoylamphodiacetate, disodium cocoamphodipropionate, disodium lauroylamphodipropionate, disodium hexanoylamphodipropionate, disodium octanoylamphodipropionate, lauroylamphodipropionic acid, and cocoampho-idipropionic acid may be mentioned. Examples that may be mentioned include cocoamphodiacetate marketed by Rhodia under the trade name C2M Concentrate.

[0036] Lecithin can be mentioned in the context of phospholipids, such as products sold by the NIKKOL Group (Lecinol series) or other lecithins sold by CARGIL / LUCAS MEYER (EMULFLUIDS' EMULMETIKS family).

[0037] Specifically, lecithin and lecithin derivatives are preferred. Among them, hydrogenated lecithin is advantageously used.

[0038] The amphoteric surfactant is preferably present in an amount of about 0.05% to about 10% by weight, more preferably about 0.08% to about 5% by weight, or about 0.1% to about 2% by weight relative to the total weight of the composition.

[0039] Co-surfactants The compositions according to the invention comprise at least one co-surfactant selected from straight-chain fatty alcohols having 14-30 carbon atoms.

[0040] The co-surfactant in the composition according to the invention has a regular long carbon chain structure, such as a straight-chain C14-C30 fatty alcohol.

[0041] Preferably, the co-surfactant is a straight-chain, saturated C14-C30 fatty alcohol.

[0042] Preferably, the straight-chain, saturated C14-C30 fatty alcohol is selected from straight-chain, saturated C14-C28 fatty alcohol, more preferably straight-chain, saturated C16-C28 fatty alcohol, more preferably straight-chain, saturated C18-C26 fatty alcohol, or even straight-chain, saturated C20-C22 fatty alcohol or mixtures thereof.

[0043] More preferably, the co-surfactant is selected from linear, saturated C14-C28 fatty alcohols, preferably linear, saturated C16-C28 fatty alcohols, more preferably linear, saturated C18-C26 fatty alcohols, or even linear, saturated C20-C22 fatty alcohols or mixtures thereof.

[0044] In the context of this invention, the use of (one or more) straight-chain, saturated C14-C28 fatty alcohols, especially (one or more) C14 fatty alcohols such as myristol (C14), (one or more) C16 fatty alcohols such as cetyl alcohol or hexadecyl alcohol (C16), (one or more) C18 fatty alcohols such as stearyl alcohol or octadecyl alcohol (C18), (one or more) C20 fatty alcohols such as arachidonic acid (C20) or (one or more) C22 fatty alcohols such as behenol (C22); or mixtures thereof.

[0045] Preferably, the co-surfactant according to the invention is selected from (one or more) C20 fatty alcohols such as arachidonic acid (C20), or (one or more) C22 fatty alcohols such as behenol (C22), or mixtures thereof.

[0046] The co-surfactant is present in an amount of about 0.1% to about 10% by weight, preferably about 0.5% to about 8% by weight, or about 1% to about 5% by weight relative to the total weight of the composition.

[0047] Preferably, the co-surfactant is present in an amount of about 0.1% to about 10% by weight, preferably about 2% to about 5% by weight, or about 1% to about 3% by weight relative to the total weight of the composition.

[0048] Preferably, the weight ratio of the amphoteric surfactant to the co-surfactant ranges from about 1:1 to about 1:10, more preferably from about 1:1 to about 1:8, even from about 1:1 to about 1:7, especially from about 1:1.5 to about 1:6, advantageously from about 1:2 to about 1:6.

[0049] Second polysaccharide This composition may also contain a second polysaccharide, which is different from the first polysaccharide.

[0050] Preferably, the second polysaccharide is a natural polysaccharide.

[0051] Generally, natural polysaccharides refer to polysaccharides that can be obtained from nature. However, for the purposes of this invention, the term "natural polysaccharide" is intended to also cover "polysaccharides of natural origin," which refers to polysaccharides obtained through modification of polysaccharides that can be obtained from nature.

[0052] Typically, the second polysaccharide suitable for use in this invention can be a homopolysaccharide, such as a pectin, dextran, galactan, and mannan, or a heteropolysaccharide, such as hemicellulose, and mixtures thereof.

[0053] Similarly, the second polysaccharide can be a linear polysaccharide, such as pullulan, or a branched polysaccharide, such as gum arabic and amylopectin, or a mixed polysaccharide, such as starch.

[0054] Preferably, the second polysaccharide is selected from polysaccharides produced by microorganisms; polysaccharides isolated from algae; and polysaccharides from higher plants, such as homogeneous polysaccharides, especially cellulose and its derivatives or fructans; heterogeneous polysaccharides, such as gum arabic, galactomannan, glucomannan and its derivatives; and mixtures thereof.

[0055] More preferably, the second polysaccharide is selected from homopolysaccharides, particularly cellulose and its derivatives or fructans, heteropolysaccharides such as gum arabic, galactomannan, glucomannan and their derivatives; and mixtures thereof.

[0056] Examples of second polysaccharides include fructans, gellan gum, dextran, amylose, amylopectin, glycogen, pullulan, dextran, cellulose and its derivatives (e.g., methylcellulose, hydroxyalkylcellulose, ethylhydroxyethylcellulose and carboxymethylcellulose), mannan, xylan, lignin, arabinogalactan, galacturonan, chitin, chitosan, glucuronyl xylan, arabinoxylan, xyloglucan, glucomannan, arabinogalactan, glycosaminoglycans, gum arabic, gum tragacanthus, gum arabic, locust bean gum, galactomannan, guar gum and its nonionic derivatives, especially hydroxypropyl guar gum and its ionic derivatives, microbial polysaccharide gums, especially sclerotium gums, such as stearin, or xanthan gum, mucopolysaccharides, and especially chondroitin sulfate, and mixtures thereof. These secondary polysaccharides can be chemically modified, especially with urea or carbamate groups, or through hydrolysis, oxidation, esterification, etherification, sulfation, phosphorylation, amination, amidation, or alkylation reactions, or several of these modifications.

[0057] The obtained derivatives can be anionic, cationic, or amphoteric.

[0058] These second polysaccharides applicable to the present invention can be distinguished based on whether they are derived from microorganisms, algae or higher plants, as detailed below.

[0059] polysaccharides produced by microorganisms Dextran and dextran sulfate Dextran is a neutral polysaccharide without any charged groups; it is biologically inert and is prepared by fermentation of beet sugar containing only hydroxyl groups. Dextran fractions of different molecular weights can be obtained from natural dextran through hydrolysis and purification. Dextran can be particularly readily available in the form of dextran sulfate.

[0060] Dextran is represented by products sold by Pharmacosmos under the names "Dextran" or "Dextran T," or by MeitoSangyo Co. under the names Dextran 40 Powder or Dextran 70 Powder. Dextran sulfate is sold by PK Chemical A / S under the name Dextran sulfate.

[0061] Succinyl polysaccharide Succinosaccharides are high-molecular-weight extracellular polymers produced by bacterial fermentation, composed of octasaccharide repeating units (repeating eight sugars). Succinosaccharides, for example, are marketed by Rhodia under the name Rheozan.

[0062] Polysaccharides isolated from algae Furcellaran Furcellaria fastigiata is a red algae sourced from the algae Furcellaria fastigiata. Furcellaria fastigiata is produced, for example, by companies like Est-Agar.

[0063] Polysaccharides from plants This type of polysaccharide can be divided into homopolysaccharides (containing only one type of sugar) and heteropolysaccharides composed of several types of sugars.

[0064] a) Isopolysaccharides and their derivatives The polysaccharides according to the present invention may be selected from cellulose and its derivatives or fructans.

[0065] Cellulose and its derivatives The polysaccharides according to the present invention can also be cellulose or its derivatives, particularly cellulose ethers or esters (e.g., methylcellulose, carboxymethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxymethylpropylcellulose, cellulose acetate, cellulose nitrate, nitrocellulose).

[0066] The present invention may also contain cellulose-based associative polymers.

[0067] According to the present invention, the term "cellulose-based associative polymer" refers to any polysaccharide compound having a linear sequence of dehydrated glucose pyranose residues (AGU) linked together via β(1,4) bonds in its structure. The repeating unit is a cellobiose dimer. The AGU is in a chair configuration and has three hydroxyl functional groups: two secondary alcohols (at positions 2 and 3) and a primary alcohol (at position 6). The resulting polymer is bonded together via intermolecular bonds of the hydrogen-bonded type, thereby giving cellulose a fibrous structure (approximately 1500 molecules per cellulose molecule).

[0068] The degree of polymerization varies greatly depending on the source of cellulose; its value can range from several hundred to tens of thousands.

[0069] The hydroxyl groups of cellulose can react partially or completely with various chemical reagents to obtain cellulose derivatives with inherent properties. Cellulose derivatives can be anionic, cationic, amphoteric, or nonionic. Among these derivatives, cellulose ethers, cellulose esters, and cellulose ester ethers are distinguished.

[0070] In nonionic cellulose ethers, alkyl cellulose such as methyl cellulose and ethyl cellulose may be mentioned; hydroxyalkyl cellulose such as hydroxymethyl cellulose, hydroxyethyl cellulose and hydroxypropyl cellulose; and mixed hydroxyalkylalkyl cellulose such as hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose, hydroxyethyl ethyl cellulose and hydroxybutyl methyl cellulose.

[0071] In anionic cellulose ethers, carboxyl cellulose and its salts may be mentioned. As examples, carboxymethyl cellulose, carboxymethyl methyl cellulose, and carboxymethyl hydroxyethyl cellulose and their sodium salts may be mentioned.

[0072] In cationic cellulose ethers, cross-linked or non-cross-linked quaternized hydroxyethyl cellulose may be mentioned.

[0073] Quaternizing agents can be, in particular, glycidyltrimethylammonium chloride or fatty amines such as laurylamine or stearylamine. Another cationic cellulose ether that can be mentioned is hydroxyethyl cellulose hydroxypropyltrimethylammonium.

[0074] Quaternized cellulose derivatives, especially: - Quaternized cellulose modified with a group containing at least one fatty chain, such as an alkyl, arylalkyl, or alkylaryl group containing at least 8 carbon atoms, or a mixture thereof. - Quaternized hydroxyethyl cellulose modified with a group containing at least one fatty chain, such as an alkyl, arylalkyl, or alkylaryl group containing at least 8 carbon atoms, or a mixture thereof.

[0075] The alkyl groups derived from the aforementioned quaternized cellulose or hydroxyethyl cellulose preferably contain 8 to 30 carbon atoms. The aryl groups preferably represent phenyl, benzyl, naphthyl, or anthracene groups.

[0076] Examples of quaternized alkyl hydroxyethyl celluloses containing C8-30 aliphatic chains include Quatrisoft LM 200, Quatrisoft LM-X 529-18-A, Quatrisoft LM-X 529-18B (C12 alkyl) and Quatrisoft LM-X 529-8 (C18 alkyl) sold by Amerchol, and Crodacel QM, Crodacel QL (C12 alkyl) and Crodacel QS (C18 alkyl) sold by Croda.

[0077] Among cellulose derivatives, the following can also be mentioned: - Cellulose modified with a group containing at least one fatty chain, such as hydroxyethyl cellulose modified with a group containing at least one fatty chain, such as alkyl groups, especially C8-22, arylalkyl and alkylaryl groups, such as Natrosol Plus Grade 330 CS (C16 alkyl) sold by Aqualon, and - Cellulose modified with polyalkylene glycol alkylphenyl ether groups, such as Amercell Polymer HM-1500 (nonylphenyl polyethylene glycol (15) ether) sold by Amerchol.

[0078] Cellulose esters include inorganic esters of cellulose (cellulose nitrates, cellulose sulfates, cellulose phosphates, etc.), organic esters of cellulose (cellulose monoacetate, cellulose triacetate, cellulose amide propionate, cellulose acetate butyrate, cellulose acetate propionate, and cellulose acetate trimellitate, etc.), and mixed organic / inorganic esters of cellulose, such as cellulose acetate butyrate sulfate and cellulose acetate propionate sulfate. Hydroxypropyl methylcellulose phthalate and ethyl cellulose sulfate may also be mentioned among cellulose ester ethers.

[0079] The cellulose-based associative polymers of the present invention can be selected from unsubstituted cellulose and substituted cellulose. Cellulose and derivatives are represented by products sold by companies such as Novian (CP-Kelco) under the name Cekol (carboxymethyl cellulose), AkzoNobel under the name Akucell AF (sodium carboxymethyl cellulose), Dow under the names Methocel™ (cellulose ether) and Ethocel™ (ethyl cellulose), and Hercules Aqualon under the names (carboxymethyl cellulose and sodium carboxymethyl cellulose), (methyl cellulose), Blanose™ (carboxymethyl cellulose), (methyl cellulose, hydroxypropyl methyl cellulose), (hydroxypropyl cellulose), (cetyl hydroxyethyl cellulose), and CS (hydroxyethyl cellulose).

[0080] Fructan The polysaccharides according to the present invention can be, in particular, fructans selected from inulin and its derivatives (especially dicarboxylic inulin and carboxymethyl inulin).

[0081] Fructans (or fructosans) are oligosaccharides or polysaccharides comprising a series of defructose units optionally combined with several sugar residues other than fructose. Fructans can be linear or branched. They can be products obtained directly from plant or microbial sources, or alternatively, products whose chain length has been altered (increased or decreased) through fractionation, synthesis, or hydrolysis (especially enzymatic hydrolysis). Fructans typically have a degree of polymerization of from 2 to about 1000, and preferably from 2 to about 60.

[0082] Distinguish between three groups of fructans. The first group corresponds to products where most of the fructose units are linked by β(2,1) bonds. These are essentially linear fructans, such as inulin.

[0083] The second group also corresponds to linear fructose, but the fructose units are essentially linked via β(2,6) bonds. These products are levosaccharides.

[0084] The third group corresponds to mixed fructans, which contain β(2,6) and β(2,1) sequences. These are essentially branched fructans, such as graminans.

[0085] The preferred fructan in the composition according to the invention is inulin. Inulin can be obtained from, for example, chicory, dahlia or Jerusalem artichoke, preferably chicory.

[0086] In particular, the polysaccharide (especially inulin) has a degree of polymerization of 2 to about 1000, and preferably 2 to about 60, and a degree of substitution of less than 2 based on a fructose unit.

[0087] The inulin used in this invention is represented by products sold by Orafti under the name Beneo™ Inulin and by Sensus under the name Beneo™ Inulin.

[0088] b) Heteropolysaccharides and their derivatives The polysaccharides that can be used according to the present invention can be gums, such as cassia gum, arabic gum, konjac gum, yarrow gum, tara gum, acacia gum, or gum arabic.

[0089] Gum Arabic Gum arabic is a highly branched acidic polysaccharide that exists as a mixture of potassium, magnesium, and calcium salts. The monomeric elements of its free acid (arabinic acid) are D-galactose, L-arabinose, L-rhamnose, and D-glucuronic acid.

[0090] Galactomannan (guar gum, locust bean gum, fenugreek gum, tara gum) and its derivatives (guar gum phosphate, hydroxypropyl guar gum, etc.) Galactomannan is a non-ionic polysaccharide extracted from the endosperm of legume seeds; it constitutes storage carbohydrates.

[0091] Galactomannans are macromolecules composed of a backbone of β(1,4)-linked D-galactopyranose units with side branches consisting of individual D-galactopyranose units linked to the backbone by α(1,6). The main differences among various galactomannans lie first in the proportion of α-D-galactopyranose units present in the polymer, and secondly in the significant differences in the distribution of galactose units along the mannose chain.

[0092] For guar gum, the mannose / galactose (M / G) ratio is approximately 2, for tara gum it is 3, and for locust bean gum it is 4.

[0093] Guar gum Guar gum is characterized by a mannose / galactose ratio on the order of 2:1. The galactose groups are regularly distributed along the mannose chains.

[0094] The guar gum that can be used according to the present invention can be nonionic, cationic, or anionic. According to the present invention, chemically modified or unmodified nonionic guar gum can be used.

[0095] Unmodified nonionic guar gum includes products sold by Unipektin under the names Vidogum GH, Vidogum G, and Vidocrem, by Rhodia under the name Jaguar, by Danisco under the name Guar, by Cargill under the name Viscogum™, and by Aqualon under the name Guar gum.

[0096] Hydrolyzed nonionic guar gum that can be used according to the present invention is, for example, a product sold under the name of Danisco.

[0097] The modified nonionic guar gum that can be used according to the present invention is preferably modified with C1-6 hydroxyalkyl groups, wherein, for example, hydroxymethyl, hydroxyethyl, hydroxypropyl and hydroxybutyl groups may be mentioned.

[0098] These nonionic guar gums, optionally modified with hydroxyalkyl groups, are sold by Rhodia under the trade names Jaguar HP 60, Jaguar HP 105 and Jaguar HP 120 (hydroxypropyl guar gum) or by Aqualon under the name HP (hydroxypropyl guar gum).

[0099] Cationic galactomannan gum preferably has a cationic charge density of less than or equal to 1.5 meq. / g, more specifically, between 0.1 and 1 meq. / g. The charge density can be determined using the Kjeldahl method. It typically corresponds to a pH on the order of 3 to 9.

[0100] Generally, for the purposes of this invention, the term "cationic galactomannan gum" refers to any galactomannan gum containing cationic groups and / or groups that can be ionized into cationic groups.

[0101] Preferred cationic groups are selected from those containing primary amine, secondary amine, tertiary amine and / or quaternary amine groups.

[0102] The cationic galactomannan gums used typically have a weight-average molecular weight of approximately 500 to 5 × 10⁻⁶. 6 And preferably about 10 3 Up to 3×10 6 .

[0103] The cationic galactomannan gums that can be used according to the invention are, for example, gums containing tri(C1-4) alkylammonium cationic groups. Preferably, 2% to 30% (by amount) of the hydroxyl functionality of these gums contains trialkylammonium cationic groups.

[0104] Among these trialkylammonium groups, trimethylammonium and triethylammonium groups are most particularly noteworthy.

[0105] Even more preferably, these groups account for 5% to 20% by weight, relative to the total weight of the modified galactomannan gum.

[0106] According to the present invention, the cationic galactomannan gum is preferably guar gum containing hydroxypropyltrimethylammonium groups, i.e., guar gum modified with 2,3-epoxypropyltrimethylammonium chloride, for example.

[0107] These galactomannan gums, especially guar gum modified with cationic groups, are known products in themselves, as described, for example, in patents US 3589578 and US 4031307.

[0108] The anionic guar gum that can be used according to the present invention is a polymer containing groups derived from carboxylic acids, sulfonic acids, hyposulfonic acids, phosphoric acids, phosphonic acids, or pyruvic acids. The anionic groups are preferably carboxylic acid groups. The anionic groups can also be in the form of acid salts, especially sodium, calcium, lithium, or potassium salts.

[0109] The anionic guar gum that can be used according to the present invention is preferably a carboxymethyl guar gum derivative (carboxymethyl guar gum or carboxymethyl hydroxypropyl guar gum).

[0110] locust bean Locust bean gum is extracted from the seeds of the locust bean tree (Ceratonia siliqua).

[0111] Unmodified locust bean gum that can be used in this invention is sold, for example, by Cargill under the name Viscogum™, by Unipektin under the name Vidogum L, and by Danisco under the name LBG.

[0112] The chemically modified locust bean gum that can be used in this invention can be represented by cationic locust beans, for example, sold by Toho under the name Catinal CLB (locust bean hydroxypropyltrimethylammonium chloride).

[0113] Tara glue Tara gum, which can be used in the context of this invention, is sold, for example, by Unipektin under the name Vidogum SP.

[0114] Furthermore, agar is a galactopolysaccharide found in the cell walls of some species of red algae (Rhodophyta). They are formed from polymer groups whose basic backbone is a chain of β(1,3)D-galactopyranose and α(1,4)L3-6 dehydrated galactose, which repeat regularly and alternately. Differences within the agar family are attributed to the presence or absence of solvated methyl or carboxyethyl groups. These hybrid structures are typically present in variable percentages, depending on the algal species and the harvest season.

[0115] Agar-agar is available in concentrations of 40,000 to 300,000 g·mol⁻¹. -1 It is a mixture of high molecular weight polysaccharides (agarose and agar gum). It is obtained by: preparing algal extracts, usually by autoclaving and by processing these liquids containing about 2% agar-agar in order to extract the latter.

[0116] Agar is produced, for example, by B&V Agar Producers Group under the name Gold Agar, by Hispanagar under the names Agarite and Grand Agar, and by Setexam under the names Agar-Agar, QSA (QuickSoluble Agar) and Puragar.

[0117] Preferably, the second polysaccharide is selected from carrageenan, xanthan gum, gellan gum, pectin, chitosan and mixtures thereof; more preferably, it is selected from gellan gum.

[0118] Xanthan gum is a heteropolysaccharide produced on an industrial scale by aerobic fermentation of the bacterium *Xanthomonas campestris*. Similar to cellulose, its structure consists of a backbone of β-D-glucose linked in a β(1,4) pattern. One of the two glucose molecules has a trisaccharide side chain consisting of α-D-mannose, β-D-glucuronic acid, and terminal β-D-mannose. The internal mannose residues are typically acetylated at carbon 6. Approximately 30% of the terminal mannose residues have pyruvate groups chelated between carbons 4 and 6. The glucuronic acid and charged pyruvate are ionizable, thus contributing to the anionic nature of xanthan gum (high negative charge up to pH 1). The content of pyruvate and acetate residues varies depending on the species, fermentation method, post-fermentation conditions, and purification steps. These groups can be used in commercial products with Na... + K + or Ca 2 + Ion neutralization (Satia, 1986). The neutralized form can be converted to the acidic form by ion exchange or dialysis using an acidic solution. For aqueous compositions containing 1% xanthan gum with a molecular weight of 1,000,000 to 50,000,000, xanthan gum has a viscosity of 0.6 to 1.65 Pa·s (measured at 25°C using a Brookfield viscometer, LVT type, at 60 rpm). Xanthan gum, for example, is a product sold by Rhodia Chimie under the trade name Rhodicare and by Cargill Texturizing Solutions, Inc. under the trade name Satiaxane. TM (Food, beauty, and pharmaceutical industries), by ADM, Inc. under the trade name Novaxan TM Products sold by CP-Kelco under the trade names Kelzan® and Keltrol®.

[0119] Gellan gum is an anionic linear heteropolyoside based on oligosaccharide units (tetraglycosides) composed of four sugars. D-glucose, L-rhamnose, and D-glucuronic acid exist in gellan gum in a 2:1:1 ratio as monomeric elements. It is marketed, for example, by CP Kelco under the name Kelcogel CG LA.

[0120] Pectin is a linear polymer of α-D-galacturonic acid (at least 65%) linked at positions 1 and 4 to carboxylic acid groups esterified with methanol groups. Approximately 20% of the sugars constituting the pectin molecule are neutral sugars (L-rhamnose, D-glucose, D-galactose, L-arabinose, D-xylose). L-rhamnose residues are found in all pectins, incorporated into the main chain at positions 1 and 2. Uronic acid molecules possess carboxyl functionality. This functionality is present in their COO2 groups. - In its natural state, pectin is endowed with the ability to exchange ions. Divalent ions (especially calcium) have the ability to form ion bridges between the two carboxyl groups of two different pectin molecules. In its natural state, a certain proportion of carboxyl groups are esterified by methanol groups. The natural degree of esterification of pectin can be between 70% (apple, lemon) and 10% (strawberry), depending on the source used. Using pectin with a high degree of esterification, it is possible to hydrolyze the -COOCH3 group to obtain weakly esterified pectin. Depending on the proportion of methylated or unmethylated monomers, the chain is therefore more or less acidic. HM (high methoxy) pectin is therefore defined as having a degree of esterification greater than 50%, and LM (low methoxy) pectin is defined as having a degree of esterification less than 50%. In the case of amidated pectin, the -OCH3 group is replaced by the -NH2 group. Pectin is marketed in particular by Cargill under the name Unipectine™, by CP-Kelco under the name Genu, and by Danisco under the name Grinsted Pectin.

[0121] Carrageenan is an anionic polysaccharide that constitutes the cell walls of various red algae (Rhodophyceae) belonging to the families Gigartinacae, Hypneaceae, Furcellariaceae, and Polyideaceae. They are typically obtained from natural strains of these algae via hot water extraction. These linear polymers, formed from disaccharide units, consist of two D-galactopyranose units linked alternately by α(1,3) and β(1,4) bonds. They are highly sulfated polysaccharides (20-50%), and the α-D-galactopyranose residues may be in a 3,6-dehydrated form. Depending on the number and position of sulfate groups on the repeating disaccharides of the molecule, several types of carrageenan are distinguished: kappa-carrageenan with one sulfate group, iota-carrageenan with two sulfate groups, and lambda-carrageenan with three sulfate groups. Carrageenan is primarily composed of potassium, sodium, magnesium, triethanolamine, and / or calcium salts of polysaccharide sulfates. Carrageenan is particularly well-known to SEPPIC under the name Solagum. ® Sold by Gelymar under the name Carragel ®Carralact ® and Carrasol ® Sold by Cargill under the names Satiagel™ and Satiagum™; and by CP-Kelco under the name Genulacta. ® Genugel ® and Genuvisco ® Sale.

[0122] Chitosan is a linear polysaccharide composed of randomly distributed β-(1→4)-linked D-glucosamine (deacetylation units) and N-acetyl-D-glucosamine (acetylation units). It is prepared by treating the chitinous shells of shrimp and other crustaceans with an alkaline substance (e.g., sodium hydroxide).

[0123] Preferably, the second polysaccharide is present in an amount of about 0.01% to about 5% by weight, more preferably about 0.05% to about 3% by weight, or about 0.08% to about 1% by weight relative to the total weight of the composition.

[0124] Preferably, the weight ratio of the first polysaccharide to the second polysaccharide ranges from about 0.05 to 4, more preferably from about 0.1 to 4, advantageously from about 0.1 to 2, and particularly from about 1:1.

[0125] Salt In addition, the composition used in this invention may also contain a salt, such as a salt obtained by acid and / or base.

[0126] For example, acids can be selected from citric acid, maleic acid, acetic acid, salicylic acid, lactic acid, glycolic acid, phytic acid, tartaric acid, malic acid, fumaric acid, etc., and mixtures thereof; bases include sodium hydroxide and calcium hydroxide, sodium phosphate and calcium phosphate, such as monosodium phosphate or disodium phosphate, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, sodium hydroxide, potassium hydroxide triethylamine, etc., and mixtures thereof.

[0127] Advantageously, when the composition used in this invention comprises a first polysaccharide and a salt component, the composition has a further improved conversion sense.

[0128] Preferably, the salt is present in an amount of about 0.5% to about 15% by weight, more preferably about 2% to about 12% by weight, or about 4% to about 10% by weight relative to the total weight of the composition.

[0129] oil phase Preferably, the composition according to the invention comprises an oil phase.

[0130] The oil phase of the composition according to the invention may contain any type and appropriate amount of fatty substances known to those skilled in the art.

[0131] The term "fatty substance" refers to substances that, at 25°C and atmospheric pressure (1.013 x 10⁻⁶), are fatty substances. 5 Organic compounds that are insoluble in water (solubility less than 5% by weight, preferably less than 1% by weight, and even more preferably less than 0.1% by weight) at Pa.

[0132] Preferably, the aliphatic substance has at least one hydrocarbon-based chain in its structure, comprising a sequence of at least six carbon atoms and / or at least two siloxane groups. Furthermore, the aliphatic substance is generally soluble in organic solvents, such as chloroform, dichloromethane, carbon tetrachloride, ethanol, benzene, toluene, tetrahydrofuran (THF), liquid petroleum jelly, or decamethylcyclopentasiloxane, under the same temperature and pressure conditions.

[0133] Preferably, the fatty substance includes liquid fatty substances (oil) and non-liquid fatty substances such as solid or gaseous fatty substances.

[0134] Here, oil is defined at atmospheric pressure (1.013 x 10⁻⁶). 5 Aliphatic substances (i) with a melting point of less than or equal to 25°C, preferably less than or equal to 20°C, at atmospheric pressure. In other words, these aliphatic substances are liquid at atmospheric pressure and are not in a solid or gaseous state.

[0135] The oil may be selected from mineral oil, vegetable or synthetic oil, and silicone oil, as well as mixtures thereof. For example, vegetable oil may be selected from jojoba oil, avocado oil, sesame oil, sunflower oil, corn oil, soybean oil, safflower oil, or grapeseed oil; mineral oil may be selected from liquid petrolatum, hydrogenated or non-hydrogenated isoparaffins, or isohexadecane; synthetic oil may be selected from parleam, isopropyl myristate, cetearyl octanoate, polyisobutylene, ethylhexyl palmitate, or alkyl benzoate; and silicone oil (including volatile or non-volatile silicone oil) may be selected from polydimethylsiloxane (PDMS), cyclodimethylsiloxane, or cyclomethylsiloxane, as well as mixtures thereof.

[0136] Non-liquid fatty substances may be selected from sorbitol fatty acid esters, fatty acid esters such as stearate esters, behenate esters, arachidate esters, palmitate esters, fatty acid esters of sugars, and mixtures thereof. In other cases, non-liquid fatty substances may be selected from: purcellin oil (caprylate cetearyl), isopropyl myristate, isopropyl palmitate, C12-C15 alkyl benzoate, 2-ethylphenyl benzoate, isopropyl lanolinate, hexyl laurate, diisopropyl adipate, isononyl isononanoate, oleyl erucic acid, 2-ethylhexyl palmitate, isostearyl isostearate, diisopropyl sebacate, octanoate, decanoate, or ricinoleate of alcohols or polyols, hydroxylated esters, and pentaerythritol esters, and mixtures thereof.

[0137] The fatty substances that can be used in this invention are (poly)oxyalkylene-modified or (poly)glycerol-modified.

[0138] Preferably, the composition of the present invention further comprises at least one fatty substance selected from diisopropyl sebacate, diisopropyl adipate, isononyl isononanoate, isostearyl isostearate, and mixtures thereof.

[0139] Aqueous phase The compositions according to the present invention may contain any type and appropriate amount of aqueous phase known to those skilled in the art.

[0140] In this paper, the term "aqueous phase" refers to each substance that constitutes the dispersed phase, namely water, water-miscible organic solvents, and water-soluble or water-dispersible additives.

[0141] Water-miscible organic solvents that may be mentioned include, for example, straight-chain or branched monohydric alcohols containing 1 to 8 carbon atoms, such as ethanol, propanol, isopropanol, butanol or isobutanol; polyethylene glycol containing 4 to 80 ethylene oxide atoms; and polyols such as glycerol, propylene glycol, isopentyl glycol and butanediol.

[0142] Water-soluble additives that may be mentioned include, for example, mono-, di-, or trivalent inorganic salts; water-soluble UV shielding agents; and sugars such as glucose, sucrose, trehalose, sorbitol, lactose, fructose, xylose, or maltose.

[0143] More preferably, this composition is used for treating keratin materials, particularly for skin, and comprises: relative to the total weight of the composition, (a) at least 0.08% to 1% by weight of at least one first polysaccharide selected from diutan gum, vegan gum, and mixtures thereof; (b) at least 0.1% to 2% by weight of at least one amphoteric surfactant selected from lecithin; (c) at least 1% to 3% by weight of a co-surfactant selected from straight-chain fatty alcohols having 16 to 26 carbon atoms.

[0144] Beauty Uses Another subject of the present invention is to provide a method for treating keratin materials, such as skin, comprising applying a composition according to the invention to the keratin material in order to provide a transformative sensation as disclosed in the present invention.

[0145] Preparation and Use Another subject of the present invention is to provide a method for preparing cosmetics that treat keratin materials, such as skin, the cosmetics comprising compositions according to the present invention that provide a transformative sensation as disclosed herein.

[0146] cosmetic Another subject of the present invention is to provide a cosmetic comprising a composition having good stability and improved transformation sensation, as disclosed herein, and optionally other functional agents, such as non-limiting active agents, solubilizers, cosmetically acceptable carriers, etc.

[0147] A more detailed, but non-limiting, list of components that may be used in the compositions disclosed herein is presented below.

[0148] According to the invention, the composition optionally further comprises at least one active agent, which is virtually all acceptable active agents in a cosmetic, and / or any suitable emollient.

[0149] The composition optionally includes one or more solubilizers. Various solubilizers are well known in the art and can be used in the compositions described herein. In some cases, one or more solubilizers may be, for example, one or more cosmetically acceptable water-soluble auxiliaries (hydrotopes).

[0150] The compositions according to the present invention may contain at least one preservative commonly used in cosmetics.

[0151] The following examples are intended to illustrate the invention and are not intended to limit its scope. Example

[0152] The amounts / concentrations of the ingredients in the compositions / formulations described below are expressed as a percentage by weight relative to the total weight of each composition / formulation.

[0153] I. Preparation 1. The raw materials used in the embodiments and comparative embodiments of the present invention.

[0154] 2. Examples 1-3 and Comparative Examples 1-5: As shown in Table 1, compositions No. 1-3 of the present invention and comparative compositions No. 1-5 were prepared.

[0155] Preparation method: -(1) Diisopropyl sebacate, water (aqua), hydrogenated lecithin (if present) and C20-22 alcohol (if present) are added to the main vessel and well mixed at 80°C and homogenized to obtain mixture A; -(2) Add lactic acid, NaOH, zein (if present), gellan gum (if present) and xanthan gum (if present) to the mixture A obtained in step (1) and mix until a homogeneous mixture B is obtained; -(3) Cool the mixture B obtained in step 2) to 25°C.

[0156] Table 1 .

[0157] II. Evaluation of the present invention and comparative compositions 1. Rheological characterization Rheology was measured using instruments for measuring rheology, specifically the MCR301 Anton Paar Spindle model: cc027.

[0158] Test model: Amplitude scan Shear strain: 0.01~200% Shear rate: 10s -1 K = (G0' - G1') / ΔG=G0'-G0'' G0': Initial energy storage modulus G0'': Initial loss modulus G1': Storage modulus when the G' and G” curves begin to intersect. Shear stress.

[0159] Stability was determined using centrifugation. 10 g of each composition was weighed and placed in a centrifuge, then centrifuged at 900 rcf for 1 hour. Each composition was then removed from the centrifuge and observed. A composition was rated "stable" if there was no phase separation, no oil formation, and no fatty alcohol crystals; otherwise, it was rated "unstable."

[0160] Here, the term "phase separation" refers to an unstable emulsion system where the aqueous and oil phases are not completely separated, and the emulsion system is partially separated from the aqueous / oil phase.

[0161] The term "oil separation" refers to the inability of an emulsion system to form, where the aqueous and oil phases are completely separated.

[0162] The present invention and the comparative composition were evaluated, and the test results are shown in Table 2 below.

[0163] Table 2: Test Results .

[0164] It can be seen that Examples 1-3 are all stable, with no phase separation, no oil production, and / or no fatty alcohols present.

[0165] The K value and ΔG value can be used to evaluate the sense of transformation. K(K=(G0'-G1') / The higher the values ​​of ) and ΔG (ΔG = G0' - G0''), the more obvious the improvement in the feeling of transformation.

[0166] The composition is considered acceptable if it has a K value greater than 2 and a ΔG value greater than 10.

[0167] All compositions of the present invention are considered acceptable and have good conversion sensitivity and stability.

[0168] For Cep1, compared with the compositions according to the invention (e.g., Examples 1-3), the composition Cep1, which includes only component (a) the first polysaccharide and excluding component (b) the amphoteric surfactant and component (c) the co-surfactant, has worse rheological properties.

[0169] For Cep2, compared with the compositions according to the invention (e.g., Examples 1-3), the composition Cep2, which includes only component (b) the amphoteric surfactant and component (c) the co-surfactant but not component (a) the first polysaccharide, has worse rheological properties and is not considered acceptable.

[0170] For Cep3, compared with the compositions according to the invention (e.g., Examples 1-3), the composition Cep3, which includes a polysaccharide other than component (a) the first polysaccharide and includes component (b) the amphoteric surfactant and component (c) the co-surfactant, has worse stability and is not considered acceptable.

[0171] For Cep4, compared with the compositions according to the invention (e.g., Examples 1-3), the composition Cep4, which includes component (a) the first polysaccharide and component (b) the amphoteric surfactant but without component (c) the co-surfactant, has worse stability and is not considered acceptable.

[0172] For Cep5, compared with the compositions according to the invention (e.g., Examples 1-3), the composition Cep5, which includes component (a) the first polysaccharide and component (c) the co-surfactant but not component (b) the amphoteric surfactant, has worse stability and is not considered acceptable.

[0173] III. Conclusion The compositions disclosed in this invention are superior to those of the comparative examples in terms of beneficial properties (e.g., stability, sensory transformation). Furthermore, the compositions of Examples 1-3 of this invention are more sustainable.

[0174] All publications and patent applications referenced in this specification are incorporated herein by reference and for any and all purposes, as if each individual publication or patent application were specifically and individually indicated to be incorporated by reference. In the event of any inconsistency between this invention and any publication or patent application incorporated herein by reference, this invention shall prevail.

Claims

1. A composition, preferably for treating keratin materials, particularly for skin, comprising: (a) at least one primary polysaccharide; (b) at least one amphoteric surfactant; (c) at least one co-surfactant selected from straight-chain fatty alcohols having 14-30 carbon atoms; in, The first polysaccharide has the following formula (I): 　　　　　 　　　　　(I) in -R indicates that the sugar is selected from rhamnose, mannose, galactose, arabinose, xylose, fucose, or... Groups; -M belongs to an ionic group or an ionizable group, preferably M represents a counter ion derived from an alkali metal or alkaline earth metal, or a counter ion derived from an inorganic ammonium or an organic amine; -n represents at least 200.

2. The composition according to claim 1, wherein M represents a counterion selected from sodium, potassium, calcium, magnesium, and ammonium ions or a counterion derived from organic amines; or -n represents at least 1000, especially at least 3000, or less than 20000, especially less than 10000, or 500 to 10000, especially 1000 to 7000.

3. The composition according to claim 1 or 2, wherein the first polysaccharide is selected from guar gum, vegan gum, and mixtures thereof.

4. The composition according to any one of the preceding claims, wherein the first polysaccharide is present in an amount of 0.01% to 5% by weight, preferably 0.05% to 3% by weight, or 0.08% to 1% by weight relative to the total weight of the composition.

5. The composition according to any one of the preceding claims, wherein the amphoteric surfactant is selected from betaine, such as (C8-C20) alkyl betaine; (C8-C20) alkylamide (C1-C6) alkyl betaine, such as cocamidopropyl betaine; sulfobetaine, such as (C8-C20) alkyl sulfobetaine, (C8-C20) alkylamide (C1-C6) alkyl sulfobetaine; amino acids, such as glycine; (C8-C20) alkyl polyaminocarboxylates; (C8-C20) alkyl amphoteric acetates, (C8-C20) alkyl amphoteric diacetates; phospholipids, such as lecithin, hydrogenated lecithin; their salts; their derivatives and mixtures thereof; preferably selected from hydrogenated lecithin.

6. The composition according to any one of the preceding claims, wherein the amphoteric surfactant is present in an amount of 0.05% to 10% by weight, preferably 0.08% to 5% by weight, or 0.1% to 2% by weight relative to the total weight of the composition.

7. The composition according to any one of the preceding claims, wherein the co-surfactant is selected from C14-C28 straight-chain fatty alcohols, preferably C16-C26 straight-chain fatty alcohols, or particularly C20-C22 straight-chain fatty alcohols.

8. The composition according to any one of the preceding claims, wherein the co-surfactant is present in an amount of 0.1% to 10% by weight, preferably 2% to 5% by weight, or 1% to 3% by weight relative to the total weight of the composition.

9. The composition according to any one of the preceding claims, wherein the weight ratio of the amphoteric surfactant to the co-surfactant ranges from 1:1 to 1:10, preferably 1:1 to 1:8, even 1:1 to 1:7, particularly 1:1.5 to 1:6, advantageously 1:2 to 1:

6.

10. The composition according to any one of the preceding claims, wherein the composition further comprises a second polysaccharide different from the first polysaccharide, the second polysaccharide being selected from natural polysaccharides, such as pectin, xanthan gum, cellulose gum, dextrin, carrageenan, gelatin, gellan gum, guar gum, cellulose ether derivatives, such as hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, methyl hydroxyethyl cellulose, starch, chitosan such as hydroxypropyl chitosan, hydroxypropyl guar gum, black aralia gum, seaweed, locust bean gum, microcrystalline cellulose, natto gum, pullulan, alginate such as sodium alginate, potassium alginate, propylene glycol alginate, sclerotium gum, sodium carboxymethyl dextran, sodium cellulose sulfate, tragacanth gum, locust bean gum, biosaccharide gum, mucilage such as cactus mucus, peptidoglycan from bacterial cell walls, and mixtures thereof, preferably, the second polysaccharide being selected from carrageenan, xanthan gum, gellan gum, pectin, chitosan, and mixtures thereof; preferably selected from gellan gum.

11. The composition according to claim 10, wherein the second polysaccharide is present in an amount of 0.01% to 5% by weight, preferably 0.05% to 3% by weight, or 0.08% to 1% by weight relative to the total weight of the composition.

12. The composition according to any one of claims 10 to 11, wherein the weight ratio of the first polysaccharide to the second polysaccharide ranges from 0.05 to 4, preferably from 0.1 to 4, advantageously from 0.1 to 2, and particularly 1:

1.

13. The composition according to any one of the preceding claims, wherein the composition further comprises a salt, such as a salt obtained by means of an acid and / or a base.

14. A method of treating a keratin material, such as skin, comprising applying a composition according to any one of claims 1 to 13 onto the keratin material.

15. Use of the composition according to any one of claims 1 to 13 for preparing products for treating keratin materials, such as skin.

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