Stable cosmetic composition with a high level of electrolytes

Abstract

Stable cosmetic composition with a high electrolyte content. This disclosure relates to a cosmetic or personal care composition comprising: a) at least one amino acid; b) at least one clay compound; c) at least one anionic thickening polymer; and in which the composition is thermally stable and contains a high electrolyte content. Figure for abstract: none

Description

Title of the invention: Stable cosmetic composition with a high level of electrolytes. SCOPE OF DISCLOSURE

[0001] This disclosure relates to cosmetic and personal care compositions comprising a high level of electrolytes. CONTEXT

[0002] A common problem associated with the formulation of compositions, particularly compositions containing active ingredients, is ensuring physical stability. Many active ingredients, including electrolytes, can cause stability problems, especially when used in large quantities. The consequences of stability problems are significant. For example, stability problems can lead to partial or even total loss of product integrity, loss of color, unpleasant odors, changes in viscosity, and so on. With regard to active ingredients, stability problems reduce or eliminate activity and prevent the active ingredients from reaching their intended target.

[0003] There is a need for physically stable and effective compositions. The inventors of the present application have discovered that a unique combination of certain polymers, clays and amino acids has resulted in a polymer mixture that stabilizes and modifies rheology. DISCLOSURE SUMMARY

[0004] This disclosure relates to cosmetic compositions comprising a combination of amino acids, clays, and anionic thickening polymers. The cosmetic compositions provide thermally stable compositions despite containing a high level of electrolytes.

[0005] The composition includes a unique combination of amino acids, clays and anionic thickening polymers which provide thermally stable compositions despite a high level of electrolytes.

[0006] The composition typically includes: a. at least one amino acid; b. at least one clay compound; c. at least one anionic thickening polymer; and

[0007] in which the composition is thermally stable and contains a high level of electrolytes.

[0008] In some embodiments, at least one amino acid has an isoelectric point value greater than 7. Non-limiting examples of an amino acid include Arginine, lysine and mixtures thereof. In some embodiments, at least one amino acid is present from approximately 0.5% to approximately 4% by weight relative to the total weight of the composition.

[0009] Non-limiting examples of clay compounds include hectorite, smectite, kaolin, bentonite, montmorillonite, or mixtures thereof. In some embodiments, at least one clay compound is present from approximately 0.1 to approximately 0.5% by weight relative to the total weight of the composition.

[0010] In some embodiments, at least one anionic thickening polymer is selected from 2-acrylamido-2-methylpropanesulfonic acid polymers and / or copolymers, polysaccharide polymers, and mixtures thereof. In various embodiments, at least one anionic thickening polymer is selected from ammonium acryloyldimethyltaurate / VP copolymer, xanthan gum, and mixtures thereof. In some embodiments, at least one anionic thickening polymer is present from approximately 0.3% to approximately 2% by weight relative to the total weight of the composition.

[0011] In various embodiments, at least one electrolyte is selected from the group of α- and β-hydroxy acids, carboxylic acids, taurine, phosphoric acids, pyrophosphoric acid, cosmetically active organic acids, and mixtures thereof. In some embodiments, at least one electrolyte is selected from glycolic acid, lactic acid, malic acid, citric acid, tartaric acid, mandelic acid, gluconic acid, ascorbic acid, and mixtures thereof. In some embodiments, at least one electrolyte is present from approximately X wt% to approximately Y wt% relative to the total weight of the composition.

[0012] In some embodiments, the compositions may have a pH of about 5 to about 6.

[0013] In a different aspect, the composition may include: a. at least one amino acid; b. at least one clay compound; c. at least one anionic thickening polymer selected from the following polymers and / or 2-acrylamido-2-methylpropanesulfonic acid copolymers, anionic polysaccharide polymers, and mixtures thereof; and in which the composition is thermally stable and contains a high level of electrolytes.

[0014] In another aspect, the composition may include:

[0015] a) arginine;

[0016] b) at least one clay compound;

[0017] d) at least one anionic thickening polymer; and

[0018] in which the composition is thermally stable and contains a high level of electrolytes.

[0019] This disclosure also relates to processes for treating keratinous materials, preferably of the skin, more preferably of the face, including the application of the cosmetic composition to said keratinous materials.

[0020] Without being bound by theory or mechanism, it is suggested that the unique combination of amino acids, clays and anionic thickening polymers provides a synergistic combination that thermally stabilizes the compositions even in the presence of a high level of electrolytes.

[0021] It must be understood that both the preceding general description and the following detailed description are provided by way of example and explanation only, and do not limit the invention. DETAILED DESCRIPTION OF THE DISCLOSURE

[0022] The composition includes a unique combination of amino acids, clays and anionic thickening polymers which provide a synergistic combination which has thermally stabilized the compositions even in the presence of a high level of electrolytes.

[0023] The composition typically includes: a. at least one amino acid; b. at least one clay compound; c. at least one anionic thickening polymer; and

[0024] in which the composition is thermally stable and contains a high level of electrolytes. Amino acids

[0025] According to the various embodiments, the composition according to the disclosure includes amino acids.

[0026] In some embodiments, at least one amino acid has an isoelectric point value greater than 7. Non-limiting examples of amino acids include arginine, lysine, and mixtures thereof. According to the various embodiments, the composition as disclosed includes arginine.

[0027] According to the various embodiments, the quantity of at least one amino acid in the composition may be from approximately 0.5 to approximately 4% by weight, or from approximately 0.45 to approximately 3.95% by weight, or from approximately 0.4 to approximately 3.90% by weight, or from approximately 0.3 to approximately 3.8% by weight, or from approximately 0.4 to approximately 3.7% by weight, or from approximately 0.5 to approximately 3.6% by weight, or from approximately 0.6 to approximately 3.5% by weight, or from approximately 0.7% by weight to approximately 3.4% by weight, or from approximately 0.8 to approximately 3.3% by weight, or from approximately 0.9 to approximately 3.2% by weight, or any combination thereof. appropriate combination, range or sub-range of these values ​​by weight, relative to the total weight of the composition.

[0028] Thus, any amino acid or combination of amino acids is present, by weight, relative to the total weight of the composition, from about 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0 to about 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9 or 4% by weight, including intermediate increments and ranges. Clay compounds

[0029] In various embodiments, at least one clay compound may be selected from kaolin, bentonite, smectite, hectorite, vermiculite, illite, chlorite, halloysite, palygorskite, sepiolite, sesquioxide, imogolite, allophane, or combinations of two or more of these. For example, in some embodiments, the clay compound comprises, consists essentially of, or consists of smectite, hectorite, kaolin, bentonite, or a combination of one or more of these. The solvent may be selected from water and / or non-aqueous solvents.

[0030] In various embodiments, the total amount of clay compounds may range from about 0.1% to about 0.5% by weight, such as from about 0.15% to about 0.5% by weight, from about 0.15% to about 0.45% by weight, or any appropriate combination, sub-combination, range or sub-range of these weight values, relative to the total weight of the composition.

[0031] Thus, any clay compound or combination of clay compounds is present, by weight, relative to the total weight of the composition, of about 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45 or 0.5% by weight, including intermediate increments and ranges.

[0032] In particular, as an unmodified clay and more particularly as an unmodified hectorite, the one sold by Elementis under the name Bentone Hydroclay 2000 LO can be used. Anionic thickening polymer

[0033] The composition according to the invention comprises at least one anionic thickening polymer selected from polyacrylamide polymers, such as homopolymers and / or copolymers of 2-acrylamido-2-methylpropanesulfonic acid, gums, or polysaccharide polymers, and mixtures thereof. In some embodiments, at least one anionic thickening polymer is selected from polymers and / or copolymers of 2-acrylamido-2-methylpropanesulfonic acid, polysaccharide polymers, and mixtures thereof. In various embodiments, at least one anionic thickening polymer is selected from the copolymer ammonium acryloyldimethyltaurate / VP, xanthan gum, and mixtures thereof.

[0034] Polyacrylamide polymers that may be suitable for use in the context of the present invention may be anionic polyacrylamide polymers, including branched or unbranched substituted polymers.

[0035] Among polyacrylamides, examples that can be cited include crosslinked copolymers sold under the names Sepigel 305 (CTFA name: Polyacrylamide / C13-14 isoparaffin / Laureth-7) or Simulgel 600 (CTFA name: Acrylamide / sodOium acryloyldimethyltaurate copolymer / isohexadecane / polysorbate 80) by the company SEPPIC.

[0036] Among the 2-acrylamido-2-methylpropanesulfonic acid copolymers, we can mention ammonium polyacryloyldimethyltaurate, such as the product sold under the name Hostacerin AMPS by Clariant, and the ammonium acryloyldimethyltaurate / VP copolymer, such as the product sold under the name Aristoflex AVC by Clariant.

[0037] Other polyacrylamide polymers that can be used in the context of the present invention include multiblock copolymers of acrylamides and acrylamides substituted with acrylic acids and substituted acrylic acids. Commercially available examples of such multiblock copolymers include the crosslinked acryloyldimethyltaurate / steareth-25 methacrylate polymer such as the product sold by Clariant under the name Aristoflex HMS and the copolymers sold under the names Hypan SR150H, SS500V, SS500W, SSA100H, from Lipo Chemicals, Inc.

[0038] According to a particular embodiment of the invention, the polyacrylamide polymers or copolymers suitable for use in the invention are chosen from ammonium acryloyldimethyltaurate / VP copolymer and acryloyldimethyltaurate / steareth-25 methacrylate copolymer.

[0039] A wide variety of gums and polysaccharides can be used in the context of the present invention as thickening polymers.

[0040] “Polysaccharides” are gelling agents that contain a skeleton of repeated sugar (i.e., carbohydrate) motifs. Non-limiting examples of polysaccharide thickening polymers include those selected from the group consisting of cellulose, carboxymethyl hydroxyethylcellulose, cellulose acetate propionate carboxylate, hydroxyethylcellulose, hydroxyethylethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, methylhydroxyethylcellulose, microcrystalline cellulose, sodium cellulose sulfate, and mixtures thereof.

[0041] Alkyl-substituted celluloses are also suitable. Among the alkylhydroxyalkylcellulose ethers, the starting material designated under the cetylhydroxyethylcellulose, a mixture of cetyl alcohol ether and hydroxyethylcellulose, is a starting material notably sold under the trade name Natrosol® CS Plus by Aqualon Corporation. Other polysaccharides include starch derivatives (e.g., starch oxide, starch dialdehyde, dextrin, soluble starch, acetyl starch, starch phosphate, carboxymethyl starch, hydroxyethyl starch, hydroxypropyl starch).

[0042] Celluloses that may be cited include quaternized alkylhydroxyethylcellulose containing C8-C30 fatty chains, such as Quatrisoft LM 200, Quatrisoft LM-X 529-18-A, Quatrisoft LM-X 529-18B (Ci2 alkyl) and Quatrisoft LM-X 529-8 (Ci8 alkyl) products sold by Amerchol and Crodacel QM, Crodacel QL (C12 alkyl) and Crodacel QS (C[8] alkyl) products sold by Croda.

[0043] Among cellulose derivatives, we can also mention celluloses modified with groups including at least one fatty chain, such as hydroxyethylcelluloses modified with groups including at least one fatty chain such as alkyl groups, in particular in C8-C22, arylalkyl, alkylaryl groups, such as Natrosol Plus Grade 330 CS (alkyl in Ci6) sold by the Aqualon company, and celluloses modified with polyalkylene glycol alkyl phenyl ether groups, such as the Amercell Polymer HM-1500 product (polyethylene glycol (15) nonyl phenyl ether) sold by the Amerchol company.

[0044] Cellulose and derivatives may also be sold under the names Avicel® (microcrystalline cellulose, MCC) by FMC Biopolymers, under the name Cekol (carboxymethylcellulose) by Noviant (CP-Kelco), under the name Akucell AF (sodium carboxymethylcellulose) by Akzo Nobel, under the names Methocel™ (cellulose ethers) and Ethocel™ (ethylcellulose) by Dow, and under the names Aqualon® (carboxymethylcellulose and sodium carboxymethylcellulose), Benecel® (methylcellulose), Blanose™ (carboxymethylcellulose), Culminai® (methylcellulose, hydroxypropylmethylcellulose), Klucel® (hydroxypropylcellulose), Polysurf® (cetylhydroxyethylcellulose) and Natrosol® CS (hydroxyethylcellulose) by Hercules Aqualon.

[0045] The polysaccharide polymers suitable for use in the invention can be chosen from xanthan gums. Xanthan gums are sold, for example, under the name Rhodicare by Rhodia Chimie, under the name Satiaxane™ by Cargill Texturizing Solutions (for the food, cosmetic and pharmaceutical industries), under the name Novaxan™ by ADM and under the names Kelzan® and Keltrol® (for example, Keltrol® CG) by CP-Kelco.

[0046] According to a particular embodiment of the disclosure, the polysaccharide polymers suitable for use in the disclosure are chosen from cellulose, xanthan gum and mixtures thereof.

[0047] In various embodiments, the total amount of anionic thickening polymer can range from about 0.1% to about 0.5%, such as from about 0.15% to about 0.5%, from about 0.15% to about 0.45%, or any appropriate combination, subcombination, range or subrange of these values ​​by weight, relative to the total weight of the composition.

[0048] Thus, any anionic thickening polymer or combination of anionic thickening polymers is present, by weight, relative to the total weight of the composition, of about 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45 or 0.5% by weight, including intermediate increments and ranges. Electrolytes

[0049] The electrolyte can be a cosmetically active ingredient for keratinous substances, particularly the skin.

[0050] The electrolyte can be chosen from organic acids and their salts.

[0051] The electrolyte can be chosen from among hydroxy acids, such as α- and [3- hydroxy acids, carboxylic acids, taurine, phosphoric acids, pyrophosphoric acid and cosmetically active organic acids, such as ascorbic acid, glycyrrhizic acid and UV absorbers, for example, 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid, terephthalylidene diamphr sulfonic acid and phenylbenzimidazole sulfonic acid.

[0052] The electrolyte can be chosen from ascorbic acid and its salts.

[0053] The composition according to the present invention comprises (a) at least one electrolyte. Two or more electrolytes can be used in combination. Thus, a single type of electrolyte or a combination of different types of electrolytes can be used.

[0054] The electrolyte can be a cosmetically active ingredient for keratinous substances, particularly skin, such as anti-aging agents, whitening agents, anti-wrinkle agents, moisturizing agents, anti-inflammatory agents, astringent agents, ultraviolet absorbers, and / or antiperspirant agents. In the present invention, (a) electrolytes are not particularly limited insofar as they can be used as raw materials for cosmetics and can be blended appropriately according to the intended purpose.

[0055] The electrolyte may include, for example, organic acids and their salts, and inorganic acids and their salts. Preferably, the electrolyte may be chosen from among organic acids and their salts.

[0056] The term "organic acid" here refers to non-polymer organic compounds that exhibit acidic properties when dissolved in water. The solubility of the organic acid in water is not particularly limited, but is generally at least 1 g / 100 mL of water, preferably at least 5 g / 100 mL of water, and in particular at least 10 g / 100 mL of water at room temperature (25 °C) under atmospheric pressure (760 mmHg).

[0057] The organic acid may have a weight average molecular weight of less than 500, preferably less than 400, particularly less than 300, and more particularly less than 250. In the context of this patent memorandum, the average molecular weight indicates a number average molecular weight.

[0058] The organic acid can be chosen from, for example, hydroxy acids, such as α- and γ-hydroxy acids, carboxylic acids, amino acids, taurine, phosphoric acids, pyrophosphoric acid and cosmetically active organic acids, such as ascorbic acid, glycyrrhizic acid and UV absorbers, for example, 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid, terephthalylidene diamphrul sulfonic acid and phenylbenzimidazole sulfonic acid.

[0059] With regard to α- and [3-hydroxy acids, the positions α and [3] reflect the fact that at least one of the hydroxyl groups occupies an α or [3] position relative to at least one of the carboxyl groups of the acid; that is, it is attached, respectively, either to the carbon bearing the hydroxyl group or to the carbon adjacent to the one bearing the carboxyl group. The term "α-hydroxy acid," or "AHA," here denotes a carboxylic acid that has at least one hydroxyl group on the adjacent (α) carbon atom. The term "[3-hydroxy acid," or "BHA," here denotes a carboxylic acid that has at least one hydroxyl group on the beta carbon atom.

[0060] The α-hydroxy acid can be represented by the following chemical formula:

[0061] (Ra)(Rb)C(OH)COOH

[0062] where

[0063] Ra and Rb are H, F, Cl, Br, I, an alkyl, aralkyl or aryl group in saturated or unsaturated form, isomeric or non-isomeric, linear or branched or cyclic, having 1 to 25 carbon atoms, and furthermore Ra and Rb may bear OH, CHO, COOH and an alkoxyl group having 1 to 9 carbon atoms.

[0064] The hydrogen atom attached to the carbon atom may be substituted by F, Cl, Br, I, or a lower alkyl, aralkyl, aryl, or alkoxyl group having 1 to 9 carbon atoms. Alpha hydroxy acids may be present as the free acid or lactone, or as a partial salt with an organic base or an inorganic alkali. Alpha hydroxy acids may exist as stereoisomers such as the D, L, DL, and meso forms.

[0065] Typical alkyl, aralkyl, aryl and alkoxyl groups for Ra and Rb include methyl, ethyl, propyl, isopropyl, butyl, pentyl, benzyl, phenyl, methoxyl and ethoxyl.

[0066] The α-hydroxy acid can be chosen, for example, from the group consisting of glycolic acid, lactic acid, malic acid, citric acid, tartaric acid, mandelic acid, gluconic acid and mixtures thereof, preferably from the group consisting of glycolic acid, lactic acid, citric acid, tartaric acid and mixtures thereof, more preferably from lactic acid, citric acid, tartaric acid and mixtures thereof.

[0067] Examples of [3-hydroxy acids include, without limitation, salicylic acid and its derivatives.

[0068] The carboxylic acid can be chosen from monocarboxylic acids in Cl-C6, such as acetic acid, propanoic acid, butanoic acid; dicarboxylic acids in Cl-C6; such as maleic acid, succinic acid, glutaric acid, adipic acid, oxalic acid and malonic acid; aromatic carboxylic acids, such as phthalic acid and salicylic acid; pyruvic acid and glucuronic acid.

[0069] The cation fraction of the electrolyte may consist of metallic or organic cations. Examples of metallic cations include alkali metal ions and alkaline earth metal ions, such as Na+, K+, Ca2+ and Mg2+, as well as Zn2+ and Al3+. Examples of organic cations include ammonium ions, sulfonium ions, phosphonium ions, and tertiary amines such as trimethylamine salts, triethylamine salts, monoethanolamine salts, triethanolamine salts, and pyridine salts.

[0070] As electrolytes, the following organic acids and their inorganic salts may be mentioned, such as calcium salts, potassium salts, sodium salts and magnesium salts: lactic acid and lactates, such as sodium lactate, magnesium lactate and calcium lactate; phosphoric acid and phosphate, such as potassium phosphate, sodium phosphate, sodium pyrophosphate; glycyrrhizin and glycyrrhizinate, such as dipotassium glycyrrhizinate; ascorbic acid and its salts, such as magnesium ascorbate phosphate, sodium ascorbate phosphate, sodium ascorbate, disodium L-ascorbyl sulfate; pyrrolidone carboxylic acid and pyrrolidone carboxylates, such as sodium pyrrolidone carboxylate and zinc pyrrolidone carboxylate; amino acids such as proline, aspartic acid, glutamic acid, serine and their derivatives;UV absorbers such as 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid and its sodium salts, and similar substances. In particular, the (a) electrolyte is selected from ascorbic acid and its salts.

[0071] The amount of electrolyte(s) in the composition according to this disclosure is at least 3% by weight relative to the total weight of the composition.

[0072] The electrolyte(s) may be present in a content of 7% by weight or more, preferably 8.5% by weight or more, and more preferably 10% by weight or more, relative to the total weight of the composition.

[0073] The electrolyte(s) may be present in a content of 30% by weight or less, preferably 20% by weight or less, and more preferably 10% by weight or less, relative to the total weight of the composition.

[0074] The electrolyte(s) may be present in a content ranging from 3% to 30% by weight, preferably from 4% to 29% by weight, preferably from 5% to 28% by weight, preferably from 6% to 28% by weight, preferably from 7% to 25% by weight, preferably from 8.5% to 20% by weight, and even more preferably from 9% to 15% by weight, relative to the total weight of the composition. PH

[0075] The pH of the cosmetic composition may vary. In some cases, the pH of the cosmetic composition is from about 5 to about 6. Moreover, in some cases, the pH of the cosmetic composition is between 5 and 5.5. Furthermore, in some cases, the pH of the cosmetic composition is less than 6, for example, 5.8 or less, 5.5 or less, 5.2 or less. Optional active ingredients and other ingredients

[0076] In certain embodiments, there may be one or more optional active ingredients or other ingredients (here, "additives") present in the salt-stable cosmetic composition, the one or more additives being chosen from, for example, but not limited to: humectants, such as acetamide MEA, glycols, such as glycerin and propylene glycol; antimicrobials;Antioxidants, including but not limited to phenolic compounds such as chalcones, flavones, flavanones, flavanols, flavonols, dihydroflavonols, isoflavonoids, neoflavonoids, catechins, anthocyanins, tannins, lignans, aurones, stilbenoids, curcuminoids, alkylphenols, betacyanins, capsacinoids, hydroxybenzoketones, methoxyphenols, naphthoquinones, and phenolic terpenes, resveratrol, curcumin, pinoresol, ferulic acid, hydroxytyrosol, cinnamic acid, caffeic acid, p-coumaric acid, baicalin (Scutellaria baicalensis root extract), and pine bark extract (extract (from Pinus Pinaster bark / bud), ellagic acid; hyaluronic acid and its derivatives; hydroxyacetophenone; and vitamins and vitamin derivatives, such as tocopherol and ascorbic acid; and their combinations.

[0077] In some embodiments, the additives may include one or a combination of antimicrobial agents and their salts, for example, including, but not limited to, the group consisting of chlorphenesin, caprylyl glycol, phenoxyethanol, caprylhydroxamic acid, benzoic acid, salicylic acid, benzyl alcohol, phenethyl alcohol, benzalkonium chloride, 4-hydroxyacetophenone, piroctone olamine, hexylglycerin, ethylhexylglycerin, octylglycerin, benzylglycerin, 3-heptoyl-2,2-propanediol, and 1,2-hexanediol, and pentylene glycol, and combinations thereof.

[0078] In some embodiments, the additives may include one or a combination of skin actives, for example, including, but not limited to, the group consisting of tocopherol, phenoxyethanol, sodium hyaluronate, capryloyl salicylic acid, phenylethyl resorcinol, hydroxyacetophenone, and their combinations.

[0079] In certain embodiments, the one or more additives present in the salt-stable cosmetic composition may include one or more other components, for example, including, but not limited to, penetrants; sequestering agents; perfumes; dispersants; ceramides; opacifiers, and combinations thereof. Although the optional components mentioned above are given by way of example, it should be noted that other optional components compatible with cosmetic applications known in the art may be used.

[0080] According to the various embodiments, the quantities of additives, for example, active ingredients and other components, present in the salt-stable cosmetic composition can range from about 0.001% to about 50%, from about 0.5% to about 30%, from about 1.5% to about 20%, and from about 5% to about 15%, or any appropriate combination, sub-combination, range or sub-range of these values ​​by weight, relative to the weight of the oxidizing component or the salt-stable cosmetic composition.

[0081] In certain embodiments, one or more additives, alone or in combination, may be present in one or both of the oxidizing component and the salt-stable cosmetic composition from about 0.05% to about 50% by weight, from about 0.05% to about 2.5% by weight, from about 0.1% to about 2%, from about 0.25% to about 1.5%, and from about 0.5% to about 1.25%, or any appropriate combination, sub-combination, range or sub-range of these weight values, relative to the weight of the salt-stable cosmetic composition.

[0082] In certain embodiments, one or more other components, such as preservatives, vitamins and the like, alone or in combination, may be present in one or both of the oxidizing component and the salt-stable cosmetic composition from about 0.05% to about 50% by weight, from about 0.05% to about 25% by weight, from about 0.1% to about 10%, from about 0.25% to about 5%, and from about 0.5 to about 3.5%, or any appropriate combination, sub-combination, range or sub-range of these values ​​by weight, relative to the weight of the salt-stable cosmetic composition.

[0083] Thus, an additive or a combination of additives may be present in the salt-stable cosmetic composition, by weight, relative to the weight of the oxidizing component or the salt-stable cosmetic composition, each additive or combination being present in approximately 0.001, 0.002, 0.003, 0.004, 0.005, 0.006, 0.007, 0.008, 0.009, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.10, 0.20, 0.30, 0.40, 0.50, 0.60, 0.70, 0.80, 0.90, 1.0, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49 at approximately 50% by weight, including increments and intermediate ranges. Cosmetically acceptable support system

[0084] Cosmetic compositions include a cosmetically acceptable carrier system. The term "cosmetically acceptable" means a carrier that is compatible with any keratinous substrate, and for this purpose includes water and optionally water-based solvents, subject to any exclusions as disclosed herein.

[0085] Cosmetic compositions may include any constituent normally used in the intended topical application and administration. In particular, they may include water, solvents, fatty compounds (namely, those described by the International Federation of Cosmetic Chemistry Societies, for example, in Cosmetic Raw Material Analysis and Quality Volume I: Hydrocarbons, Glycerides, Waxes and Other Esters (Redwood Books, 1994), which is incorporated herein by reference in its entirety), polyols, pigments, fillers, silicones, surfactants, thickeners, gelling agents, preservatives, and mixtures thereof in any proportion. Usage methods

[0086] This disclosure also relates to methods of using the cosmetic compositions described herein. For example, the cosmetic compositions may be used in a process that includes applying the cosmetic compositions to human skin. In some cases, the composition is applied to the face. Furthermore, the cosmetic composition may be used in processes for depigmenting and / or bleaching keratinous materials, preferably skin, comprising the step of applying the composition to the keratinous substance according to the compositions described herein. The aforementioned processes are non-therapeutic.

[0087] This disclosure also relates to a non-therapeutic cosmetic process for depigmenting, lightening and / or bleaching keratinous materials, preferably of the skin, comprising the step of applying the composition according to the compositions described herein to the keratinous substance. EXAMPLES

[0088] An implementation of this disclosure is provided by means of the following examples. The following examples are intended to illustrate aspects of the technology and are not exhaustive. Example

[0089] The objective of the present disclosure is to use smectite clays and amino acids to address the thermal stability challenge associated with the thickening system in a composition with a high level of electrolytes.

[0090] Demonstration of the synergy between smectite clays and amino acids in improving thermal stability (in solution) Example 1

[0091] [Tables 1] Example 1 INCI Name % (active) Smectite Clay Hectorite 0.24 Amino Acid Arginine 1.80 Polymer Xanthan Gum 0.36 Electrolyte Solution Ascorbic Acid 8.4 Other active ingredients 4 pH Adjuster Hydroxide (pH 6) Glycerin 12 Results

[0092] To demonstrate the effect of the association between smectite clays and the amino acid when in the presence of a high amount of electrolyte, we assessed the percentage change in viscosity in a low-shear region (0.1 l / s) after storing the mixture at 60 °C for one week. The rheological behavior at low shear rates was indicative of the storage stability of the formulation. In Table 2, we showed that before heat treatment, the composition with xanthan gum alone was comparable to that with the addition of arginine and hectorite. However, after one week of heat treatment at 60 °C, the viscosity of the composition with xanthan gum alone decreased by nearly 25%, while that with the addition of arginine and hectorite remained relatively stable. only experienced a decrease of approximately 6.5% in viscosity. Although xanthan gum with the addition of hectorite also slightly improved thermal stability, the synergy between the three is very clear.

[0093] [Tables2] T0 @0.1 l / s 1 week 60 °C @ 0.1 l / s % change Xanthan Gum 17.4355 (Pa.s) 13.1496 -24.58 Xanthan Gum + Arginine 14.4874 10.7828 -25.57 Xanthan Gum + Hectorite 18.8728 15.0784 -20.11 Xanthan Gum + Arginine + Hectorite 17.5304 16.3984 -6.46 Example 2

[0094] [Tables3] INCI Name % Smectite Clay Hectorite 0.24 Amino Acid Arginine 1.8 Polymer Aristoflex AVC 1.8 Electrolyte Solution Ascorbic Acid 8.4 Other active ingredients 4 Results

[0095] To demonstrate the effect of the association between smectite clays and the amino acid when in the presence of a high amount of electrolyte, we assessed the percentage change in viscosity in a low-shear region (0.1 l / s) after storing the mixture at 60 °C for one week. The rheological behavior at low shear rates is indicative of the storage stability of the formulation. The rheological behaviors for compositions with Aristoflex AVC alone, with Arginine, with Hectorite, and with Argine and Hectorite are recorded in Table 4.

[0096] In Table 4, after 1 week of heat treatment at 60 °C, the viscosity of the composition with Aristoflex AVC alone was reduced by almost 11%. When the compositions contained Arginine or Hectorite, the change in viscosity was less than that of Aristoflex alone and was about 4.7% with Arginine and 3.7% with Hectorite. However, the composition containing both Arginine and Hectorite was shown to exhibit a dramatic change in viscosity. Although Aristoflex AVC with the addition of hectorite slightly improved thermal stability, the synergy that appears when Aristoflex AVC was combined with Arginine and Hectorite was very clear.

[0097] [Tables4] T0 @0.11 / s 1 week 60 °C @ 0.1 1 / s % change Aristoflex AVC 37.98 (Pa.s) 33.83 -10.93 Aristoflex AVC + Arginine 33.7 35.28 -4.69 Aristoflex AVC + Hectorite 79.02 76.1 -3.7 Aristoflex AVC + Arginine + Hectorite 125.15 162.21 29.61

[0098] Demonstration of the synergy between hectorite and arginine to improve thermal stability (in gel) Example 3

[0099] [Tables5] INCI Name % Smectite Clay Hectorite 0.24 Amino Acid Arginine 1.8 Polymer Xanthan Gum 0.72 Electrolyte Solution Ascorbic Acid 8.4 Other active ingredients 4 Results

[0100] To demonstrate the effect of the combination of smectite clays and amino acid in the presence of a high amount of electrolyte, we assessed the percentage change in viscosity in a low-shear region (0.1 l / s) after storing the mixture at 60 °C for one week. The rheological behavior at low shear rates was indicative of the storage stability of the formulation. In Table 6, we showed that after heat treatment at 60 °C for one week, the solution with xanthan gum alone exhibited a 4.15% decrease in viscosity. The combination of xanthan gum and hectorite was slightly less effective, with a 7.04% decrease.Although the combination of xanthan gum and arginine showed a very slight improvement over xanthan gum alone, the combination of xanthan gum, arginine and hectorite gave the best result, managing to resist. any decrease in viscosity and even showed an increase of 5.71% after heat treatment.

[0101] [Tableauxô] T0 @0.11 / s 1 week 60 °C @ 0.1 1 / s % change Xanthan Gum 59.28 (Pa.s) 56.82 -4.15 Xanthan Gum + Arginine 60.07 60.49 0.7 Xanthan Gum + Hectorite 63.95 59.45 -7.04 Xanthan Gum + Arginine + Hectorite 60.37 63.82 5.71

[0102] The preceding description illustrates and describes the disclosure. Furthermore, the disclosure shows and describes only the preferred embodiments. However, as mentioned above, it should be understood that it is suitable for use in several other combinations, modifications, and environments, and that it is suitable for changes or modifications in the scope of the inventive concepts as expressed herein, in accordance with the teachings above and / or the skills or knowledge of the relevant art. The embodiments described herein are further intended to explain the best known means to the applicant and to enable others skilled in the art to use the disclosure in such or other embodiments, and with the various modifications required by particular applications or uses thereof. Accordingly, the description is not intended to limit the invention to the form disclosed herein.Similarly, the annexed claims are to be interpreted as including variant embodiments.

[0103] As used herein, the terms "comprising", "having" and "including" are used in their broad and non-limiting sense.

[0104] The terms "a," "an," "the," and "the" are understood to encompass both the plural and the singular. Thus, the phrase "one of their mixtures" also refers to "their mixtures." Throughout the disclosure, the phrase "one of their mixtures" is used, following a list of items as shown in the following example where the letters A through F represent the items: "one or more items selected from the group consisting of A, B, C, D, E, F, and one of their mixtures." The phrase "one of their mixtures" does not require that the mixture include all of the items A, B, C, D, E, and F (although all of the items A, B, C, D, E, and F may be included). Rather, it indicates that a mixture of two or more of A, B, C, D, E, and F may be included. In other In terms, it is equivalent to the formulation "one or more elements chosen from the group consisting of A, B, C, D, E, F, and a mixture of two or more of A, B, C, D, E and F".

[0105] Similarly, the expression "one of their / its salts" also refers to "their / its salts". Thus, when the disclosure refers to "an item selected from the group consisting of A, B, C, D, E, F, one of their salts, and one of their mixtures", it indicates that one or more of A, B, C, D and F may be included, one or more of a salt of A, a salt of B, a salt of C, a salt of D, a salt of E and a salt of F may be included, or a mixture of any two of A, B, C, D, E, F, a salt of A, a salt of B, a salt of C, a salt of D, a salt of E and a salt of F may be included.

[0106] The salts referred to throughout the disclosure may include salts having a counterion such as an alkali metal, alkaline earth metal, or ammonium counterion. This list of counterions, however, is not exhaustive. The appropriate counterions for the components described herein are known in art.

[0107] The expression "one or more" means "at least one" and therefore includes individual components as well as mixtures / combinations.

[0108] The term “plurality” means “more than one” or “two or more”.

[0109] Except in operational examples, or unless otherwise indicated, all numbers In all cases, quantities of ingredients and / or reaction conditions can be modified by the term "approximately," meaning within + / - 10% of the stated quantity. For example, a quantity of "approximately 1 by weight" can include a quantity as low as 0.90% by weight or as high as 1.1. Similarly, a quantity of "approximately 50" can include a quantity as low as 45% by weight and as high as 55% by weight.

[0110] All percentages, parts and ratios herein are based on the total weight of the compositions of the present invention, unless otherwise indicated.

[0111] Some of the various identified component categories may overlap. In such cases where an overlap may exist and the composition includes both components (or the composition includes more than two overlapping components), an overlapping compound does not represent more than one component. For example, some compounds may be considered both an emollient and a nonionic surfactant. If a particular composition includes both an emollient and a nonionic surfactant, a single compound will serve only as an emollient or only as a nonionic surfactant (the single compound does not simultaneously serve as both an emollient and a nonionic surfactant).

[0112] As used herein, all supplied ranges are intended to include each specific range within the given ranges, as well as each combination of sub- intermediate ranges. Thus, a range from 1 to 5 specifically includes 1, 2, 3, 4 and 5, as well as sub-ranges such as 2 to 5, 3 to 5, 2 to 3, 2 to 4, 1 to 4, etc. All ranges and values ​​disclosed here are inclusive and combinable. For example, any value or point described here that falls within a range described here can serve as a minimum or maximum value to deduce a sub-range, etc.

[0113] The expression "substantially free" or "essentially free" as used here means that less than about 2% by weight of a specific material is added to a composition, relative to the total weight of the compositions. However, the compositions may include less than about 1% by weight, less than about 0.5% by weight, less than about 0.1% by weight, or none at all of the specified material.

[0114] All components presented positively in this disclosure may be excluded negatively from the claims, for example, a claimed composition may be "free", "substantially free" (or "substantially free") of one or more components that are presented positively in this disclosure.

[0115] All publications and patent applications cited in this patent memorandum are incorporated herein by reference, and for all purposes, as if each individual publication or patent application were specifically and individually indicated as being incorporated by reference. In the event of any inconsistency between this disclosure and any publication or patent application incorporated herein by reference, this disclosure shall prevail.

Claims

Demands

1. Composition comprising: a. at least one amino acid selected from arginine, lysine and mixtures thereof; b. at least one clay compound selected from hectorite, smectite, kaolin, bentonite, montmorillonite, or mixtures thereof; a. at least one anionic thickening polymer; wherein the pH of the composition is from about 5 to about 6; and wherein the composition is thermally stable and contains a high level of electrolytes.

2. Composition according to claim 1, wherein at least one amino acid is selected from amino acids having an isoelectric point value greater than 7.

3. Composition according to any one of the preceding claims, wherein at least one amino acid is present from about 0.5 to about 4% by weight relative to the total weight of the composition.

4. Composition according to any one of the preceding claims, wherein at least one clay compound is present from about 0.1 to about 0.5%, by weight relative to the total weight of the composition.

5. Composition according to any one of the preceding claims, wherein at least one anionic thickening polymer is selected from 2-acrylamido-2-methylpropanesulfonic acid polymers and / or copolymers, polysaccharide polymers, and mixtures thereof, preferably selected from ammonium acryloyldimethyltaurate / VP copolymer, xanthan gum, and mixtures thereof.

6. Composition according to any one of the preceding claims, wherein at least one anionic thickening polymer is present from about 0.3 to about 2% by weight relative to the total weight of the composition.

7. Composition according to any one of the preceding claims, wherein at least one electrolyte is selected from the group of α- and γ-hydroxy acids, carboxylic acids, taurine, phosphoric acids, pyrophosphoric acid, cosmetically active organic acids, and a mixture thereof.

8. Composition according to any one of the preceding claims, wherein at least one electrolyte is selected from glycolic acid, lactic acid, malic acid, citric acid, tartaric acid, mandelic acid, gluconic acid, ascorbic acid, and mixtures thereof.

9. Composition according to any one of the preceding claims, wherein at least one electrolyte is present from about 3% to about 30%, by weight relative to the total weight of the composition.

10. A skin treatment method comprising applying a cosmetic composition of claim 1 to the skin.