Scalp care composition containing powdered active agent and sugar alcohol

Abstract

To provide a composition for caring the scalp and for improving the feel, particularly the texture of powders.SOLUTION: The present invention relates to a scalp care composition, comprising: (a) at least one powdered active agent; (b) at least one sugar alcohol; and (c) water. The composition according to the present invention provides an improved feel after it is applied on the hair.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a cosmetic composition for caring for the scalp, comprising at least one powdered active agent, at least one sugar alcohol, and water. [Background technology]

[0002] In the field of hair / scalp cosmetics, texture is one of the most important properties.In particular, when a scalp care cosmetic composition contains a powdery active agent, there is a need to reduce the powdery texture after it is applied on the hair and scalp. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] U.S. Patent No. A-5364633 [Patent Document 2] U.S. Patent No. A-5411744 [Non-patent literature]

[0004] [Non-Patent Document 1] "Encyclopedia of Chemical Technology", Kirk-Othmer, 3rd ed., 1982, Vol. 3, pp. 896-900 and Vol. 15, pp. 439-458 [Non-Patent Document 2] "Polymers in Nature" by EA MacGregor and CT Greenwood, John Wiley & Sons, Chapter 6, pp. 240-328, 1980 [Non-Patent Document 3] "Industrial Gums-Polysaccharides and their Derivatives", edited by Roy L. Whistler, 2nd ed., published by Academic Press Inc. Summary of the Invention [Problem to be solved by the invention]

[0005] The object of the present invention is to provide a composition for caring for the scalp and for improving the sensory sensation, in particular the texture of the powder. [Means for solving the problem]

[0006] The above object of the present invention is to provide a composition for caring for the scalp, comprising: (a) at least one powdered active agent; (b) at least one sugar alcohol; (c) Water and This can be achieved by a composition comprising:

[0007] (a) The powdered active agent may be an organic compound.

[0008] (a) The powdered active agent may be a lipophilic and water-insoluble active agent.

[0009] (a) The powdered active agent may be selected from anti-aging active agents, and active agents having anti-free radical properties, or free radical scavengers.

[0010] The (a) powdered active agent may be selected from retinol (vitamin A) and derivatives such as retinol esters, retinyl palmitate, retinyl propionate, carotenes including beta-carotene, tocopherol (vitamin E) and derivatives such as tocopheryl acetate, D vitamins, vitamin D2, vitamin D3, ascorbyl palmitate, vitamin F glycerides, coenzyme Q10 or ubiquinone, ceramides, organic acid esters, and unsaponifiables having cosmetic and / or dermatological properties including tocotrienols, sesamin, phytosterols, squalene, waxes and terpenes, preferably the (a) powdered active agent is selected from organic acid esters selected from ethyl ferulate, oryzanol, in particular gamma-oryzanol.

[0011] (b) The sugar alcohol may include at least one disaccharide sugar alcohol.

[0012] (b) The sugar alcohol may comprise at least two types of sugar alcohol.

[0013] (b) The sugar alcohol may comprise at least one monosaccharide sugar alcohol in combination with at least one disaccharide sugar alcohol.

[0014] (a) The powdered active agent may be present in a content ranging from 0.01% to 5% by weight, preferably from 0.05% to 3% by weight, and even more preferably from 0.2% to 1% by weight, relative to the total weight of the composition.

[0015] (b) The sugar alcohol may be present in a content ranging from 0.05% to 3% by mass, preferably from 0.1% to 2% by mass, and more preferably from 0.2% to 1.5% by mass, relative to the total mass of the composition.

[0016] (c) Water may be present in a content ranging from 40% by mass to 95% by mass, preferably from 50% by mass to 85% by mass, and more preferably from 60% by mass to 80% by mass, relative to the total mass of the composition.

[0017] The compositions may also be in non-emulsion form, such as solutions, especially aqueous solutions, and serums.

[0018] The composition may be a leave-on cosmetic composition.

[0019] The composition may contain the oil in an amount in the range of 0% to 5% by mass, preferably 0% to 0.5% by mass, and more preferably 0% to 0.1% by mass, relative to the total mass of the composition.

[0020] The present invention also relates to a cosmetic method for caring for or conditioning the hair and / or the scalp, comprising the step of applying onto the scalp a composition according to the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] After extensive investigation, the inventors have surprisingly discovered that sugar alcohols can mask the sensation of powdery texture after a composition containing a powdery active agent is applied onto the hair and scalp, thus resulting in a cosmetic composition that can impart an improved tactile sensation.

[0022] Therefore, the composition for caring for the scalp according to the present invention comprises: (a) at least one powdered active agent; (b) at least one sugar alcohol; (c) Water and Includes.

[0023] Hereinafter, the compositions according to the invention will be described in detail.

[0024] [Composition] The scalp care composition according to the present invention comprises (a) at least one powdered active agent, (b) at least one sugar alcohol, and (c) water.

[0025] The composition according to the invention can be used as a composition for conditioning and / or caring for the scalp.

[0026] Compositions according to the invention may take a variety of forms, such as solutions, gels, lotions, serums, suspensions, dispersions, fluids, emulsions, pastes, creams, foams, etc. In some preferred embodiments, compositions according to the invention are in non-emulsion form, such as solutions, especially aqueous solutions, and serums.

[0027] The compositions used according to the present invention are preferably intended to be used as leave-on (or leave-in) type cosmetic compositions. The term "leave-on" means a composition that is not intended to be washed / rinsed off or removed immediately after application. Leave-on compositions are different from rinse-off type compositions that are intended to be rinsed off after use on keratinous materials.

[0028] The components contained in the composition according to the present invention are described in detail below.

[0029] (Powdered activator) The composition according to the present invention comprises (a) at least one powdered active agent. Two or more (a) powdered active agents may be used in combination. Thus, a single type of powdered active agent or a combination of different types of powdered active agents may be used.

[0030] The term "powder" as used herein should be understood to mean particles of any shape that are insoluble in the medium of the composition, particularly water.

[0031] (a) The powdered active agent may be of any shape, regardless of the crystalline form (e.g. lamellar, cubic, hexagonal, orthorhombic, etc.), and may be platelet-shaped, spherical or oblong.

[0032] The average particle size of the powdered active agent is not limited, but is generally 50 μm or less, preferably 20 μm or less, more preferably 10 μm or less. The average particle size of the powdered active agent may be 0.01 μm or more, preferably 0.1 μm or more. The term "average particle size" as used herein refers to the number-average particle size given by statistical particle size distribution for half of the population, and is referred to as D50. For example, the number-average particle size may be measured by a laser diffraction particle size distribution analyzer, such as the Mastersizer 2000 by Malvern Corp.

[0033] (a) The powdered active agent may be selected from cosmetic and / or dermatological active agents, such as anti-ageing active agents, and active agents having anti-free radical properties, or free radical scavengers.

[0034] (a) The powdered active agent may be a lipophilic active agent.

[0035] The term "lipophilic" is used herein to refer to the degree of hydrophilicity at room temperature (25°C) and atmospheric pressure (10 5 "Soluble in oil" refers to a substance that is soluble in oil at a concentration of at least 1% by weight (at 1000 MPa, 1000 Pa) based on the total weight of the oil.

[0036] (a) The powdered active agent may be a water-insoluble active agent.

[0037] The term "water-insoluble" as used herein means water-insoluble at room temperature (25°C) and atmospheric pressure (10 5 This term refers to substances that are soluble in water at a concentration of less than 0.1% by weight, specifically less than 0.01% by weight, based on the total weight of water (at 100 Pa).

[0038] (a) The powdered active agent may be chosen from cosmetic and / or dermatological active agents, in particular active agents for the skin and / or scalp.

[0039] (a) The powdered active agent may be selected from skin and / or scalp care active agents, such as anti-aging active agents, and active agents for the skin and / or scalp having anti-free radical properties, or free radical scavengers.

[0040] In particular, the powdered active agent (a) of the present invention may be a lipophilic and / or water-insoluble cosmetic and / or dermatological active agent for the skin and / or scalp, in particular a lipophilic and water-insoluble active agent for the skin and / or scalp selected from anti-ageing active agents, and active agents having anti-free radical properties or free radical scavengers.

[0041] In a preferred embodiment, the (a) powdered activator of the present invention is an organic compound powdered activator.

[0042] (a) It may be preferred that the molecular weight of the organic compound forming the powdered active agent is 150 or more, preferably 300 or more, more preferably 450 or more, and / or 3,000 or less, preferably 2,000 or less, more preferably 1,000 or less.

[0043] It may be preferable that the molecular weight of the organic compound forming the powdered active agent (a) is in the range of 150 to 3,000, preferably 300 to 2,000, and more preferably 450 to 1,000.

[0044] Unless otherwise defined in the description, "molecular weight" may mean number average molecular weight.

[0045] Concerning powdered active agents, those which may be used are retinol (vitamin A) and derivatives, such as retinol esters, retinyl palmitate, retinyl propionate, carotenes, including beta-carotene, tocopherol (vitamin E) and derivatives, such as tocopheryl acetate, D vitamins, vitamin D2, vitamin D3, ascorbyl palmitate, vitamin F glycerides, coenzyme Q10 or ubiquinone, ceramides, organic acid esters, and unsaponifiables with cosmetic and / or dermatological properties, such as astcotrienol, sesamin, phytosterols, squalene, waxes and terpenes.

[0046] In a preferred embodiment of the present invention, the (a) powdered active agent is an organic acid ester, specifically represented by the formula (I):

[0047] [ka]

[0048] [In formula (I), R 1 , R 4 and R 5 represent, independently of one another, a hydrogen atom or a hydroxyl group, preferably a hydrogen atom, R 2represents a hydrogen atom, a hydroxyl group or a (C1-C6)alkoxy group, preferably a (C1-C4)alkoxy group, in particular methoxy; R 3 represents a hydroxyl group or a (C1-C6) alkoxy group, preferably a hydroxyl group; R 6 teeth, i) (C1-C6) alkyl, preferably (C1-C4) alkyl, in particular methyl or ethyl, optionally substituted with one or more groups selected from hydroxyl, amino, carboxyl and / or amido, preferably hydroxyl and / or carboxyl; ii) (C1~C 10 ) Alkyl, (C2-C 10 ) cycloalkyl, optionally substituted with one or more groups selected from alkenyl, hydroxyl, amino, carboxyl and / or amido, preferably hydroxyl and / or carboxyl, and iii) Glycosyl represents a group selected from or a geometric isomer thereof, an organic or inorganic acid or base salt thereof, or a solvate thereof, particularly a hydrate.

[0049] (C x ~C z A (C1-C6) alkyl group represents a linear or branched hydrocarbon chain containing from x to z carbon atoms, for example a (C1-C6) alkyl group represents a linear or branched hydrocarbon chain containing from 1 to 6 carbon atoms.

[0050] (C x ~C z An alkenyl group represents a linear or branched hydrocarbon-based chain containing x to z carbon atoms and containing one or more conjugated or non-conjugated unsaturations, preferably only one unsaturation. For example, (C2 to C 10 ) An alkenyl group represents a straight or branched hydrocarbon chain containing 2 to 10 carbon atoms and containing one or more unsaturations.

[0051] (C x ~Cz ) alkoxy group is -O-(C x -C z ) an alkyl group [wherein (C x ~C z ) alkyl groups are as previously defined.

[0052] According to a particular embodiment of the present invention, in formula (I), R 6 represents the (C1-C6) alkyl group i) defined above.

[0053] According to another particular embodiment of the invention, in formula (I), R 6 represents a saturated or unsaturated, preferably saturated, non-aromatic monocyclic cycloalkyl group ii) containing 5 to 7 carbon atoms and optionally substituted with one or more (C1-C4)alkyl groups and / or with one or more groups selected from hydroxyl, amino, carboxyl and / or amido, preferably hydroxyl and / or carboxyl.

[0054] In particular, the cycloalkyl group is cyclohexyl, optionally substituted with one to five hydroxyl and / or carboxyl groups. In particular, the cycloalkyl group is cyclohexyl and optionally substituted with one or more groups selected from hydroxyl, amino, carboxyl and / or amido, preferably hydroxyl and / or carboxyl. More particularly, the cycloalkyl group is cyclohexyl, optionally substituted with one to five hydroxyl and / or carboxyl groups.

[0055] According to another particular embodiment of the invention, in formula (I), R 6represents a polycyclic cycloalkyl group ii) which preferably contains between 2 and 5 fused rings, contains 12 to 32 carbon atoms and is optionally substituted; in particular, cycloalkyl is a polycyclic group containing between 4 and 5 fused rings, the rings being 3-, 5- or 6-membered and containing 16 to 20 carbon atoms, even better still 17 or 18 carbon atoms, and the cycloalkyl is one or more linear or branched (C1-C 10 ) alkyl group or linear or branched (C2-C 10 ) alkenyl groups, optionally substituted.

[0056] Preferably, the organic acid ester is of formula (I): During the ceremony, R 1 , R 4 and R 5 represents a hydrogen atom, R 2 represents a hydroxyl group or a (C1-C6)alkoxy group, preferably a (C1-C4)alkoxy group, in particular methoxy; R 3 represents a hydroxyl group or a (C1-C6) alkoxy group, R 6 represents i) a group selected from (C1-C6) alkyl, preferably (C1-C4) alkyl, and also its geometric isomers, organic or inorganic acids or base salts thereof, and solvates thereof, such as hydrates.

[0057] According to a particularly preferred embodiment, the ester of formula (I) has the formula (I'):

[0058] [ka]

[0059] [In formula (I'), R 6 is defined above, R 7 represents a hydrogen atom or a C1-C6 alkyl group. It is of the following.

[0060] According to one embodiment, the organic acid ester may more particularly be of formula (I'), where R 6 represents a (C1-C6) alkyl group and preferably a (C1-C4) alkyl group, preferably an ethyl group; R 7 represents a (C1-C6) alkyl group and preferably a (C1-C4) alkyl group, preferably a methyl group.

[0061] According to this embodiment, ethyl ferulate is preferred.

[0062] According to one embodiment, the organic acid ester may more particularly be of formula (I'), where R 6 represents a saturated monocyclic cycloalkyl group containing 5 to 7 carbon atoms, optionally substituted with one or more groups, preferably between 1 and 4 groups selected from hydroxyl and / or carboxyl, R 7 is a hydrogen atom.

[0063] According to this embodiment, chlorogenic acid is preferred.

[0064] According to one embodiment, the organic acid ester may more particularly be of formula (I'), where R 6 is at least one, preferably at least two (C1-C4) alkyl groups, preferably ethyl, and at least one, preferably one branched (C8-C 10 ) alkenyl group or (C8-C 10 ) a polycyclic group containing between 3 and 5 saturated fused rings, containing between 16 and 20 carbon atoms, substituted with an alkyl group; R 7 is a (C1-C6) alkyl group and preferably a (C1-C4) alkyl group, preferably a methyl group.

[0065] The compounds of formula (I) and formula (I') according to the invention are preferably selected from natural compounds or compounds of natural origin. They are preferably "green" compounds.

[0066] Particular examples of esters of formula (I) or formula (I') that may be mentioned are methyl ferulate, ethyl ferulate, chlorogenic acid, isopropyl ferulate or ferulic acid esters of sterols, such as oryzanol, especially gamma-oryzanol. According to another embodiment, oryzanol, especially gamma-oryzanol, is particularly preferred.

[0067] The compounds of formula (I) and formula (I') may be obtained via any method known to one skilled in the art.

[0068] For example, ferulic acid esters can be obtained by esterification of ferulic acid, which can itself be obtained by biosynthesis, for example via methoxylation of caffeic acid using the enzyme caffeic acid-O-methyltransferase, or by extraction from plant extracts, in particular wheat germ, using concentrated bases, such as, for example, sodium hydroxide and potassium hydroxide.

[0069] Gamma-oryzanol can be obtained, inter alia, from rice bran by extraction with organic solvents.

[0070] A number of compounds of formula (I) or formula (I') are also commercially available, such as gamma-oryzanol available under the trade name Oryzanol® from Tsuno Foods Co., Ltd., Gamma Oryzanol® from Ikeda Co., Ltd., or Oryzanolgamma V® from Ichimaru Pharcos Co., Ltd., ethyl ferulate available under the reference Ethyl Ferulate, Natural or COS from Gfn Selco Co., Ltd., also available from Sigma-Aldrich Co., and chlorogenic acid available under the reference Eucommia Leaves Extract Chlorogenic Acid 98% by Guilin Layn Natural Ingredients Co., Ltd.

[0071] Preferably, (a) the powdered active agent is selected from organic acid esters selected from ethyl ferulate, oryzanol, and particularly gamma-oryzanol.

[0072] (a) The powdered active agent may be present in a content of at least 0.01% by weight, preferably at least 0.05% by weight, more preferably at least 0.2% by weight, relative to the total weight of the composition.

[0073] (a) The powdered active agent may be present in a content of less than or equal to 5% by weight, preferably less than or equal to 3% by weight, more preferably less than or equal to 1% by weight, relative to the total weight of the composition.

[0074] (a) The powdered active agent may be present in a content ranging from 0.01% to 5% by weight, preferably from 0.05% to 3% by weight, and even more preferably from 0.2% to 1% by weight, relative to the total weight of the composition.

[0075] In the context of this specification, any combination of the above upper and lower limits may be used to express a preferred range of amounts.

[0076] (Sugar alcohol) The composition according to the invention comprises (b) at least one sugar alcohol. Two or more types of sugar alcohols may be used in combination. Thus, a single type of sugar alcohol or a combination of different types of sugar alcohols may be used.

[0077] Sugar alcohols are compounds obtained by reducing one or more carbonyl groups of a sugar.

[0078] In some embodiments, (b) the at least one sugar alcohol can be selected from sugar alcohols and mixtures thereof reduced from sugars, derivatives thereof, and mixtures thereof. The sugars, derivatives thereof, or mixtures thereof can be unsubstituted or substituted with at least one substituent, such as an alkyl group, a hydroxyalkyl group, an alkoxy group, an acyl group, or a carbonyl group.

[0079] In some embodiments, the sugar alcohol may be derived from monosaccharides, disaccharides, trisaccharides, and mixtures thereof. In some preferred embodiments, the sugar alcohol may be derived from monosaccharides and / or disaccharides.

[0080] In some embodiments, the sugar alcohol may be derived from a monosaccharide selected from pentoses, such as ribulose, xylose, ribose, arabinose, lyxose and deoxyribose, hexoses, such as allulose, fructose, sorbose, tagatose, allose, altose, glucose, mannose, gulose, idose, galactose, fucose, fuculose and rhamnose, and heptoses, such as sedoheptulose. Sugar alcohols derived from monosaccharides are also referred to in the present context as monosaccharide sugar alcohols.

[0081] In some embodiments, the sugar alcohol may be derived from a disaccharide, such as sucrose, lactose, maltose, and trehalose. Sugar alcohols derived from disaccharides are also referred to in the present context as disaccharide sugar alcohols.

[0082] In some embodiments, the sugar alcohol may be derived from a trisaccharide such as maltotriose, cellotriose, 2'-fucosyllactose, gentianose, raffinose, and melissitose.

[0083] In some preferred embodiments, the sugar alcohol may be selected from the group consisting of erythritol, lactitol, maltitol, mannitol, arabitol, sorbitol, xylitol, and mixtures thereof.

[0084] In another preferred embodiment, the sugar alcohol may be selected from the group consisting of erythritol, lactitol, maltitol, mannitol, arabitol, sorbitol, and mixtures thereof.

[0085] In a preferred embodiment of the invention, (b) the sugar alcohol comprises at least one monosaccharide sugar alcohol.

[0086] In a preferred embodiment of the invention, (b) the sugar alcohol comprises at least one disaccharide sugar alcohol.

[0087] In a preferred embodiment of the present invention, (b) the sugar alcohol comprises at least two types of sugar alcohol.

[0088] In another preferred embodiment of the invention, the (b) sugar alcohol comprises at least one monosaccharide sugar alcohol, such as erythritol, mannitol, arabitol, and sorbitol, and at least one disaccharide sugar alcohol, such as maltitol and lactitol, in combination.

[0089] The sugars may be in the L or D isomeric form.

[0090] The amount of (b) at least one sugar alcohol in the composition according to the present invention may be 0.05% by weight or more, preferably 0.1% by weight or more, more preferably 0.2% by weight or more, and even more preferably 0.3% by weight or more, relative to the total weight of the composition.

[0091] The amount of (b) at least one sugar alcohol in the composition according to the present invention may be at most 3% by weight, preferably at most 2% by weight, more preferably at most 1.5% by weight, and even more preferably at most 1% by weight, relative to the total weight of the composition.

[0092] The amount of (b) at least one sugar alcohol in the composition according to the present invention may be 0.05% by mass to 3% by mass, preferably 0.1% by mass to 2% by mass, more preferably 0.2% by mass to 1.5% by mass, and even more preferably 0.3% by mass to 1% by mass, relative to the total mass of the composition.

[0093] (water) The composition according to the present invention comprises water.

[0094] The amount of water in the composition according to the invention may be at least 40% by weight, preferably at least 50% by weight, more preferably at least 60% by weight, and / or at most 95% by weight, preferably at most 85% by weight, more preferably at most 80% by weight, relative to the total weight of the composition.

[0095] The amount of water in the composition according to the present invention may be 40% by mass to 95% by mass, preferably 50% by mass to 85% by mass, and more preferably 60% by mass to 80% by mass, based on the total mass of the composition.

[0096] (Other ingredients) - A hydrophilic organic solvent acceptable for use in cosmetics The composition according to the invention may comprise at least one cosmetically acceptable hydrophilic organic solvent. If two or more of these solvents are used, they may be the same or different.

[0097] Cosmetically acceptable hydrophilic organic solvents include, for example, substantially linear or branched lower monoalcohols having 1 to 8 carbon atoms, such as ethanol, propanol, butanol, isopropanol and isobutanol; aromatic alcohols, such as benzyl alcohol and phenylethyl alcohol; polyols or polyol ethers, such as propylene glycol, dipropylene glycol, isoprene glycol, butylene glycol, glycerin, propanediol, caprylyl glycol, the monomethyl, monoethyl and monobutyl ethers of ethylene glycol, propylene glycol ethers, such as the monomethyl ether of propylene glycol, diethylene glycol alkyl ethers, such as the monoethyl ether or monobutyl ether of diethylene glycol; polyethylene glycols, such as PEG-4, PEG-6 and PEG-8, and derivatives thereof.

[0098] The amount of the cosmetically acceptable hydrophilic organic solvent in the composition according to the present invention may be in the range of 5% by mass to 50% by mass, preferably 10% by mass to 40% by mass, and more preferably 15% by mass to 35% by mass, relative to the total mass of the composition.

[0099] In one embodiment of the present invention, the amount of monoalcohol having 1 to 8 carbon atoms in the composition according to the present invention may be in the range of 5% by mass to 40% by mass, preferably 10% by mass to 35% by mass, more preferably 15% by mass to 30% by mass, based on the total mass of the composition.

[0100] In one embodiment of the present invention, the amount of polyol or polyol ether in the composition according to the present invention may be in the range of 0.1% by mass to 10% by mass, preferably 0.5% by mass to 7% by mass, more preferably 1% by mass to 5% by mass, relative to the total mass of the composition.

[0101] - Thickener The composition according to the invention may comprise at least one thickening agent. A single type of thickening agent may be used, but two or more different types of thickening agents may also be used in combination.

[0102] It is preferred that the thickener is selected from hydrophilic thickeners. The term "hydrophilic" is used herein to mean a thickener that is hydrophilic at room temperature (25°C) and atmospheric pressure (10 5 "Water-soluble" refers to a substance that is soluble in water at a concentration of 1% by mass or more based on the total mass of water (at 1 Pa).

[0103] Preferably, the thickening agent is selected from polysaccharides.

[0104] Polysaccharides include, for example, glucans, modified and unmodified starches (e.g., from cereals, such as wheat, corn or rice, from vegetables, such as yellow pea, and from tubers, such as potato or cassava), amylose, amylopectin, glycogen, dextran, cellulose and its derivatives (e.g., methylcellulose, hydroxyalkylcellulose, hydroxyethylcellulose and carboxymethylcellulose), mannans, xylans, lignins, arabinose, They are selected from galactan, galacturonan, chitin, chitosan, glucuronoxylan, arabinoxylan, xyloglucan, glucomannan, pectic acid and pectin, alginic acid and alginates, arabinogalactan, carrageenan, agar, glycosaminoglucan, gum arabic, gum tragacanth, gum ghatti, gum karaya, carob gum, galactomannans such as guar gum and non-ionic derivatives thereof (e.g. hydroxypropyl guar), sclerotium gum and xanthan gum, and mixtures thereof.

[0105] For example, polysaccharides that may be used are selected from those described, for example, in "Encyclopedia of Chemical Technology", Kirk-Othmer, 3rd Edition, 1982, Vol. 3, pp. 896-900 and Vol. 15, pp. 439-458, "Polymers in Nature" by EA MacGregor and CT Greenwood, published by John Wiley & Sons, Chapter 6, pp. 240-328, 1980, and "Industrial Gums - Polysaccharides and their Derivatives", edited by Roy L. Whistler, 2nd Edition, published by Academic Press Inc., the contents of which three publications are incorporated by reference in their entirety.

[0106] For example, starch, guar gum, cellulose, and derivatives thereof can be used.

[0107] Among the starches that may be used, mention may be made of macromolecules in the form of polymers that contain base units, for example anhydroglucose units. The number of these units and their assembly make it possible to distinguish between amylose (a linear polymer) and amylopectin (a branched polymer). The relative proportions of amylose and amylopectin, as well as their degree of polymerization, may vary depending on the plant origin of the starch.

[0108] The starch molecules used may have cereal or tuber origins as their botanical origin, and thus the starches may be chosen, for example, from maize, rice, cassava, tapioca, barley, potato, wheat, sorghum and pea starches.

[0109] Starch generally exists in the form of a white powder that is insoluble in cold water and has a primary particle size ranging from 3 to 100 microns.

[0110] The starch may optionally be C1-C6 hydroxyalkylated or C1-C6 acylated (eg acetylated). The starch may also be subjected to a heat treatment.

[0111] Distarch phosphate or compounds rich in distarch phosphate can also be used, such as the products offered by the company AVEBE under the references PREJEL VA-70-T AGGL (gelatinized hydroxypropylated cassava distarch phosphate), or PREJEL TK1 (gelatinized cassava distarch phosphate), or PREJEL 200 (gelatinized acetylated cassava distarch phosphate).

[0112] The guar gum may be modified or unmodified.

[0113] Unmodified guar gums are, for example, the products sold under the names Vidogum GH 175 by the company Unipectine and Meypro-Guar 50 and Jaguar C by the company Meyhall.

[0114] The modified nonionic guar gum is, for example, modified with a C1-C6 hydroxyalkyl group.

[0115] Among the hydroxyalkyl groups that may be mentioned are, for example, the hydroxymethyl, hydroxyethyl, hydroxypropyl and hydroxybutyl groups.

[0116] These guar gums are well known in the art and can be prepared, for example, by reacting guar gum with the corresponding alkene oxide, such as propylene oxide, to obtain guar gum modified with hydroxypropyl groups.

[0117] The degree of hydroxyalkylation corresponds to the number of alkylene oxide molecules consumed by the number of free hydroxy functional groups present in the guar gum and may range, for example, from 0.4 to 1.2.

[0118] Such non-ionic guar gums, optionally modified with hydroxyalkyl groups, are sold, for example, by the company Rhodia Chimie (Meyhall) under the trade names Jaguar HP8, Jaguar HP60, Jaguar HP120, Jaguar DC 293 and Jaguar HP 105 or by the company Aqualon under the name Galactasol 4H 4FD2 It is sold at.

[0119] Among the celluloses and cellulose derivatives that can be used, such as celluloses modified with hydroxyalkyl groups, there are, for example, hydroxypropyl methylcellulose, hydroxyethyl cellulose and hydroxypropyl cellulose, as well as hydrophobized hydroxypropyl methylcellulose. Mention may be made of the products sold by the company Aqualon under the names Klucel EF, Klucel H, Klucel LHF, Klucel MF and Klucel G.

[0120] The amount of thickener in the composition according to the present invention may be in the range of 0.01% to 5% by mass, preferably 0.05% to 3% by mass, and more preferably 0.1% to 1% by mass, relative to the total mass of the composition.

[0121] - Non-ionic surfactants The composition according to the invention may comprise at least one non-ionic surfactant. If two or more non-ionic surfactants are used, they may be the same or different.

[0122] The nonionic surfactant may have an HLB (hydrophilic lipophilic balance) value of 3.0 to 7.0, preferably 3.5 to 6.0, more preferably 4.0 to 5.0. Alternatively, the nonionic surfactant may have an HLB value of 11 to 17, preferably 12 to 16, more preferably 13 to 15. When two or more nonionic surfactants are used, the HLB value is determined by the weighted average of the HLB values ​​of all the nonionic surfactants.

[0123] The non-ionic surfactant may be chosen from: (1) a surfactant selected from polyglyceryl fatty acid esters, polyoxyalkylenated alkyl glycerides, and polyoxyalkylenated fatty ethers; (2) Mixed esters of fatty acids or fatty alcohols, carboxylic acids, and glycerol; (3) fatty acid esters of sugars, and fatty alcohol ethers of sugars; (4) A surfactant selected from fatty esters of sorbitan, oxyalkylenated fatty esters of sorbitan, and oxyalkylenated fatty esters. (5) Block copolymers of ethylene oxide (A) and propylene oxide (B); (6) Polyoxyethylenated (1-40 EO) and polyoxypropylenated (1-30 PO) alkyl (C 16 ~C 30 )ether, (7) Silicone surfactants, and (8) Mixtures of these.

[0124] The surfactant (1) may be fluid at a temperature of 45°C or less.

[0125] The surfactant (1) may specifically be: - at least one saturated or unsaturated, linear or branched C8-C 22 Hydrocarbon groups, e.g. C8-C 22 Alkyl or alkenyl group, preferably C8-C 18 Alkyl or alkenyl groups, more preferably C8-C 12 Polyglyceryl fatty acid esters of at least one, preferably one, fatty acid containing an alkyl or alkenyl group and 2 to 12 glycerols, preferably 2 to 10 glycerols, more preferably 2 to 8 glycerols; - polyoxyethylenated (PEGylated) alkyl glycerides, such as polyethylene glycol derivatives of mixtures of mono-, di- and tri-glycerides of caprylic and capric acid (preferably having from 2 to 30 ethylene oxide units, more preferably having from 2 to 20 ethylene oxide units, even more preferably having from 2 to 10 ethylene oxide units), such as PEG-6 caprylic / capric glyceride, PEG-7 caprylic / capric glyceride, and PEG-7 glyceryl cocoate; - at least one saturated or unsaturated, linear or branched C8-C 22 Hydrocarbon groups, e.g. C8-C 22 Alkyl or alkenyl group, preferably C8-C 18 Alkyl or alkenyl groups, more preferably C8-C 12 polyoxyethylenated fatty ethers of at least one, preferably one, fatty alcohol containing an alkyl or alkenyl group and 2 to 60 ethylene oxide units, preferably 2 to 30 ethylene oxide units, more preferably 2 to 10 ethylene oxide units, and - A mixture of these.

[0126] It is preferred that the polyglyceryl fatty acid ester has a polyglycerol moiety derived from 2 to 10 glycerols, more preferably from 2 to 8 glycerols, and even more preferably from 4 to 6 glycerols.

[0127] The polyglyceryl fatty acid esters may be selected from mono-, di- and triesters of saturated or unsaturated acids, preferably saturated acids, containing from 8 to 22 carbon atoms, preferably from 8 to 18 carbon atoms, more preferably from 8 to 12 carbon atoms, such as caprylic acid, capric acid, lauric acid, oleic acid, stearic acid, isostearic acid and myristic acid.

[0128] The polyoxyalkylenated fatty ethers, preferably polyoxyethylenated fatty ethers, may contain 2 to 60 ethylene oxide units, preferably 2 to 30 ethylene oxide units, more preferably 2 to 10 ethylene oxide units. The fatty chain of the ether may be chosen in particular from lauryl, behenyl, arachidyl, stearyl and cetyl units, and mixtures thereof, such as cetearyl. Examples of ethoxylated fatty ethers that may be mentioned are lauryl alcohol ethers containing 2, 3, 4 and 5 ethylene oxide units (CTFA names: laureth-2, laureth-3, laureth-4 and laureth-5), such as the products sold under the names Nikkol BL-2 by Nikko Chemicals Co., Ltd., Emalex 703 by Nippon Emulsion Co., Ltd., Nikkol BL-4 by Nikko Chemicals Co., Ltd. and EMALEX 705 by Nippon Emulsion Co., Ltd. Mention may also be made, for example, of stearyl alcohol ethers containing 2, 3, 4, 5 and 20 ethylene oxide units (CTFA names: Steareth-2, Steareth-3, Steareth-4, Steareth-5 and Steareth-20), such as the products sold under the name Emalex 602 by Nippon Emulsion Co., Ltd., Emalex 603 by Nippon Emulsion Co., Ltd., Nikkol BS-4 by Nikko Chemicals Co., Ltd. and Emalex 605 by Nippon Emulsion Co., Ltd.

[0129] The polyoxyalkylenated fatty ether is a C8-C 24 Polyethylene glycol ethers of fatty alcohols or alcohols and their polyoxyalkylenated derivatives, as well as C4-C 24 Also preferred are fatty alcohols or polypropylene glycol ethers of alcohols, such as PPG-14 butyl ether and PPG-15 stearyl ether.

[0130] The (2) mixed ester of a fatty acid or fatty alcohol, a carboxylic acid, and glycerol that can be used as the nonionic surfactant can be particularly selected from the group including mixed esters of a fatty acid or fatty alcohol having an alkyl or alkenyl chain containing 8 to 22 carbon atoms, preferably 8 to 18 carbon atoms, more preferably 8 to 12 carbon atoms, and an α-hydroxy acid and / or succinic acid with glycerol. The α-hydroxy acid may be, for example, citric acid, lactic acid, glycolic acid, or malic acid, and mixtures thereof.

[0131] The alkyl chains of the fatty acids or alcohols derived from the mixed esters that may be used in the nanoemulsions of the invention may be linear or branched, saturated or unsaturated, and may in particular be stearate, isostearate, linoleate, oleate, behenate, arachidonic acid, palmitate, myristic acid, laurate, caprate, isostearyl, stearyl, linoleyl, oleyl, behenyl, myristyl, lauryl or caprylic chains, and mixtures thereof.

[0132] Examples of mixed esters that may be used in the nanoemulsions of the invention include the mixed ester of glycerol with a mixture of citric acid, lactic acid, linoleic acid and oleic acid (CTFA name: citric acid / lactic acid / linoleic acid / glyceryl oleate) sold by the company Huls under the name Imwitor 375; the mixed ester of succinic acid and isostearyl alcohol with glycerol (CTFA name: isostearyl diglyceryl succinate) sold by the company Huls under the name Imwitor 780 K; the mixed ester of citric acid and stearic acid with glycerol (CTFA name: glyceryl citrate stearate) sold by the company Huls under the name Imwitor 370; and the mixed ester of lactic acid and stearic acid with glycerol (CTFA name: glyceryl lactate stearate) sold by the company Danisco under the name Lactodan B30 or Rylo LA30.

[0133] The fatty acid ester of sugar (3) that can be used as the nonionic surfactant is a C8-C 22 Esters or mixtures of esters of fatty acids with sucrose, maltose, glucose or fructose, as well as C 14 ~C 22 It may in particular be chosen from the group comprising esters or mixtures of esters of fatty acids and of methylglucose.

[0134] C8 to C4 forming the fatty unit of the ester that can be used in the present invention 22 Or C 14 ~C 22 The fatty acids comprise saturated or unsaturated, linear alkyl or alkenyl chains containing from 8 to 22 or from 14 to 22 carbon atoms, respectively. The fatty units of the esters can be chosen in particular from stearates, behenates, arachidonates, palmitates, myristates, laurates and caprates, and mixtures thereof. Stearates are preferably used.

[0135] The sugar fatty alcohol ether (3) that can be used as the nonionic surfactant can be solid at a temperature of 45° C. or less and has a C8 to C6 22 Ethers or mixtures of ethers of fatty alcohols with glucose, maltose, sucrose or fructose, as well as C 14 ~C 22 They may in particular be selected from the group comprising the ethers or mixtures of ethers of fatty alcohols and methylglucose. These are in particular alkylpolyglucosides.

[0136] C8-C forming the fatty units of the ethers that can be used in the nanoemulsions of the invention 22 Or C 14 ~C 22 The fatty alcohols contain saturated or unsaturated, linear alkyl or alkenyl chains containing, respectively, 8 to 22 or 14 to 22 carbon atoms. The fatty units of the ethers can be chosen in particular from decyl, cetyl, behenyl, arachidyl, stearyl, palmityl, myristyl, lauryl, capryl and hexadecanoyl units, and mixtures thereof, such as cetearyl.

[0137] (4) Fatty esters of sorbitan and oxyalkylenated fatty esters of sorbitan that can be used as the nonionic surfactants described above are C 16 ~C 22 Oxyethylation of fatty acid esters and sorbitan C 16 ~C 22 The oxyethylenated esters may be selected from the group consisting of fatty acid esters, which may be formed from at least one fatty acid containing at least one saturated linear alkyl chain, each containing 16 to 22 carbon atoms, and sorbitol or ethoxylated sorbitol. The oxyethylenated esters may generally contain 1 to 100 ethylene glycol units, preferably 2 to 40 ethylene oxide (EO) units.

[0138] These esters may in particular be chosen from stearates, behenates, arachidates, palmitates and mixtures thereof, with stearates and palmitates being preferably used.

[0139] The (4) oxyalkylenated fatty ester, preferably ethoxylated fatty ester, which may be used as the nonionic surfactant may be an ester formed from 1 to 100 ethylene oxide units, preferably 2 to 60 ethylene oxide units, more preferably 2 to 30 ethylene oxide units, and at least one fatty acid chain containing 8 to 22 carbon atoms, preferably 8 to 18 carbon atoms, more preferably 8 to 12 carbon atoms. The fatty chain of the ester may be chosen in particular from stearic acid ester, behenic acid ester, arachidyl acid ester and palmitic acid ester units, and mixtures thereof. Examples of ethoxylated fatty esters that may be mentioned are esters of stearic acid containing 40 ethylene oxide units, such as the product sold under the name Myrj 52 by the company ICI (CTFA name: PEG-40 stearate), and esters of behenic acid containing 8 ethylene oxide units (CTFA name: PEG-8 behenate), such as the product sold under the name Compritol HD5 ATO by the company Gattefosse.

[0140] The block copolymer of ethylene oxide (A) and propylene oxide (B) that can be used as the nonionic surfactant (5) is particularly represented by the formula (I): HO(C2H4O) x (C3H6O) y (C2H4O) z H (I) (wherein x, y and z are integers such that x+z is in the range of 2 to 100 and y is in the range of 14 to 60) and mixtures thereof, more particularly from block copolymers of formula (I) having an HLB value in the range of 8.0 to 14.0.

[0141] (6) Polyoxyethylenated (1-40 EO) and polyoxypropylenated (1-30 PO) alkyl (C 16 ~C 30 ) The ether may be selected from the group consisting of: PPG-6 decyltetradeceth-30; polyoxyethylene (30) polyoxypropylene (6) tetradecyl ether, such as that sold by Nikko Chemicals Co., Ltd. under the name Nikkol PEN-4630; PPG-6 decyltetradeceth-12; polyoxyethylene(12) polyoxypropylene(6) tetradecyl ether, such as that sold by Nikko Chemicals Co., Ltd. under the name Nikkol PEN-4612; PPG-13 decyltetradeceth-24; polyoxyethylene(24) polyoxypropylene(13) decyltetradecyl ether, such as that sold by NOF Corporation under the name UNILUBE 50MT-2200B; PPG-6 decyltetradeceth-20; polyoxyethylene (20) polyoxypropylene (6) decyltetradecyl ether, such as that sold by Nikko Chemicals Co., Ltd. under the name Nikkol PEN-4620; PPG-4 ceteth-1; polyoxyethylene (1) polyoxypropylene (4) cetyl ether, such as that sold by Nikko Chemicals Co., Ltd. under the name Nikkol PBC-31; PPG-8 ceteth-1; polyoxyethylene (1) polyoxypropylene (8) cetyl ether, such as that sold by Nikko Chemicals Co., Ltd. under the name Nikkol PBC-41; PPG-4 ceteth-10; polyoxyethylene (10) polyoxypropylene (4) cetyl ether, such as that sold by Nikko Chemicals Co., Ltd. under the name Nikkol PBC-33; PPG-4 ceteth-20; polyoxyethylene (20) polyoxypropylene (4) cetyl ether, such as that sold by Nikko Chemicals Co., Ltd. under the name Nikkol PBC-34; PPG-5 Ceteth-20; polyoxyethylene (20) polyoxypropylene (5) cetyl ether, such as that sold by Croda Inc. under the trade name Procetyl AWS; PPG-8 Ceteth-20; polyoxyethylene (20) polyoxypropylene (8) cetyl ether, such as that sold by Nikko Chemicals Co., Ltd. under the name Nikkol PBC-44; and PPG-23 Steareth-34; Polyoxyethylene polyoxypropylene stearyl ether (34 EO) (23 PO), such as that sold by POLA Chemical Industries Co., Ltd. under the trade name Unisafe 34S-23. These can provide compositions with stability over long periods of time, even when the temperature of the composition rises and falls within a relatively short period of time.

[0142] Among the silicone surfactants (7) that may be used as the above nonionic surfactants, mention may be made of those disclosed in the literature in US Pat. No. 5,364,633 and US Pat. No. 5,411,744.

[0143] The silicone surfactant (7) as the nonionic surfactant is preferably represented by the formula (I):

[0144] [ka]

[0145] [In the formula, R1, R2 and R3 are each independently a C1 to C6 alkyl group or -(CH2) x -(OCH2CH2) y -(OCH2CH2CH2) z represents an -OR group, where at least one R, R or R group is not an alkyl group, and R is hydrogen, an alkyl group or an acyl group; A is an integer ranging from 0 to 200; B is an integer in the range of 0 to 50, with the condition that A and B are not equal to 0 at the same time; x is an integer ranging from 1 to 6; y is an integer ranging from 1 to 30; z is an integer ranging from 0 to 5. It may also be a compound of the formula:

[0146] According to a preferred embodiment of the present invention, in the compound of formula (I), the alkyl group is a methyl group, x is an integer in the range of 2-6, and y is an integer in the range of 4-30.

[0147] Examples of silicone surfactants of formula (I) that may be mentioned are those of formula (II):

[0148] [ka]

[0149] (In the formula, A is an integer ranging from 20 to 105, B is an integer ranging from 2 to 10, and y is an integer ranging from 10 to 20.) It is a compound of the formula:

[0150] As examples of silicone surfactants of formula (I), mention may also be made of those of formula (III): H-(OCH2CH2) y -(CH2)3-[(CH3)2SiO] A' -(CH2)3-(OCH2CH2) y -OH (III) (In the formula, A' and y are integers ranging from 10 to 20.) It is a compound of the formula:

[0151] The nonionic surfactant may be present in the composition according to the present invention in an amount of from 0.1% to 10% by weight, preferably from 0.5% to 7% by weight, more preferably from 1% to 5% by weight, relative to the total weight of the composition.

[0152] - Amino acids The composition according to the present invention may include at least one type of amino acid. Two or more types of amino acids may be used in combination. Thus, a single type of amino acid or a combination of different types of amino acids may be used. The amino acids may include analogs, solvates, hydrates, stereoisomers, and salts thereof.

[0153] An amino acid has at least one amino group and at least one carboxyl group. The amino group may be a primary amino group, a secondary amino group, or a tertiary amino group.

[0154] The amino acids may be in the D or L configuration.

[0155] The amino acids may be selected from acidic amino acids, basic amino acids, neutral amino acids, and mixtures thereof. An acidic amino acid typically has one amino group and two carboxyl groups. The acidic amino acids may include glutamic acid and aspartic acid. A basic amino acid typically has two amino groups and one carboxyl group. The basic amino acids may include arginine, lysine, histidine, and ornithine. The number of amino groups and the number of carboxyl groups in a neutral amino acid are the same. The neutral amino acids may include glycine, alanine, valine, leucine, isoleucine, serine, threonine, cysteine, methionine, asparagine, glutamine, proline, phenylalanine, tyrosine, and tryptophan. In some preferred embodiments, the amino acids may be selected from basic amino acids, and mixtures thereof. In a particularly preferred embodiment, the amino acid may be arginine.

[0156] The amino acids may be selected from α-amino acids, β-amino acids, γ-amino acids and δ-amino acids. The α-amino acids may be selected from non-cyclic α-amino acids and cyclic α-amino acids. The non-cyclic α-amino acids may be selected from the group consisting of alanine, arginine, asparagine, aspartic acid, cysteine, glutamine, glutamic acid, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine and valine. The cyclic α-amino acids may be selected from non-aromatic cyclic α-amino acids, such as pyrrolidone carboxylic acid (pyroglutamic acid or pyroic acid). Pyrrolidone carboxylic acid may be formed by intermolecular condensation of the amino and carboxyl groups of glutamic acid.

[0157] In some embodiments, the amino acid may be selected from amino acid derivatives, where the hydrogen atom on the nitrogen atom of the amino group in the amino acid is replaced with at least one substituent.

[0158] Examples of substituents that may be mentioned are alkyl, acyl, alkenyl, alkoxyl and alkoxycarbonyl groups.

[0159] The alkyl group may be a linear, branched or cyclic alkyl group. The alkyl group may be a linear or branched C1-C6 alkyl group, preferably a C1-C4 alkyl group, such as a methyl group, an ethyl group, a propyl group, an i-propyl group and a butyl group. On the other hand, the alkyl group may be a cyclic C3-C6 alkyl group, such as a cyclopentyl group and a cyclohexyl group.

[0160] The acyl group may be a C1 to C6 acyl group, such as a formyl group and an acetyl group.

[0161] The alkenyl group may be a C2-C6 alkenyl group, such as a vinyl group, an allyl group, a butylene group, a pentenyl group, and a hexenyl group.

[0162] The alkoxy group may be a C1 to C6 alkoxy group, such as a methoxy group, an ethoxy group, and a propoxy group.

[0163] The alkoxycarbonyl group may be a C1 to C6 alkoxycarbonyl group, such as a methoxycarbonyl group, an ethoxycarbonyl group, and a propoxycarbonyl group.

[0164] The above substituents may be further substituted with at least one group, such as a halogen atom, an amino group, a nitro group, a cyano group, a hydroxyl group, and an aromatic group, such as a phenyl group.

[0165] In one embodiment, the amino acid may be selected from a salt of an amino acid or a salt of an amino acid derivative.

[0166] The type of salt of amino acid or amino acid derivative is not limited. The salt may be an acid salt or a basic salt. The acid salt may be, for example, an inorganic acid salt such as hydrochloride, sulfate, nitrate and phosphate, and an organic acid salt such as citrate, oxalate, acetate, formate, maleate and tartrate. The basic salt may be, for example, an inorganic basic salt such as sodium salt, potassium salt, calcium salt, magnesium salt, copper salt, zinc salt, aluminum salt and ammonium salt, and an organic basic salt such as triethylammonium salt, triethanolammonium salt, pyridinium salt and diisopropylammonium salt.

[0167] The amino acid may be present in the composition according to the invention in an amount of 0.01% to 5% by mass, preferably 0.03% to 3% by mass, more preferably 0.05% to 1% by mass, relative to the total mass of the composition.

[0168] - Additives The compositions according to the invention may further comprise one or more of the adjuvants common in the cosmetic and dermatological fields, selected from cationic, anionic or amphoteric surfactants; cationic, anionic, nonionic, amphoteric or zwitterionic polymers, or mixtures thereof; gelling agents; penetrating agents; pH adjusters, such as sodium hydroxide; antidandruff agents; antioxidants; moisturizing agents, such as sodium hyaluronate; emollients; hydrophilic active agents; free radical scavengers; sequestering agents, such as gluconolactone; suspending agents; buffers; fragrances; emollients; dispersing agents; dyes and / or pigments; film-forming agents; stabilizing agents; preservatives; co-preservatives; opacifying agents; agents capable of causing a cooling sensation, such as menthol; and mixtures thereof.

[0169] The composition according to the invention may further comprise a plant extract, such as an extract from a plant of the Nymphaeaceae family, for example an extract of the roots of Nymphaea alba or an extract of the roots of ginger.

[0170] The amount of the extract from a plant of the Nymphaeaceae family may be in the range of 0.0001% to 1% by weight, preferably 0.0005% to 0.5% by weight, more preferably 0.001% to 0.1% by weight, even more preferably 0.001% to 0.05% by weight, or specifically 0.001% to 0.01% by weight, relative to the total weight of the composition.

[0171] Mention may be made, as hydrophilic active ingredients, of vitamin B3 and derivatives, ascorbic acid and its derivatives, resorcinol derivatives, C-glycoside derivatives, salicylic acid and its derivatives, alpha-hydroxy acids, niacinamide, and mixtures thereof.

[0172] The amount of the additive contained in the composition according to the present invention is not limited, but may be 0.01% by mass to 30% by mass relative to the total mass of the composition according to the present invention.

[0173] In some preferred embodiments, the composition according to the present invention does not contain oil or contains a trace amount of oil. In some embodiments, the oil may be present in the composition of the present invention in an amount ranging from 0% to 5% by weight, preferably 0% to 0.5% by weight, more preferably 0% to 0.1% by weight, based on the total weight of the composition. In some preferred embodiments, the composition according to the present invention does not contain oil (i.e., 0% by weight, based on the total weight of the composition).

[0174] In this specification, "oil" means a fatty compound or substance that is in the form of a liquid or paste (non-solid) at atmospheric pressure (760 mmHg) and at room temperature (25°C). As oils, those commonly used in cosmetics can be used, either alone or in combination. These oils can be volatile or non-volatile.

[0175] The oils may include volatile or non-volatile oils, which may in particular be hydrocarbon-based oils of animal or vegetable origin, synthetic oils, silicone oils, fluoro oils, or mixtures thereof. The oils may be chosen from ester oils, fatty alcohols, and combinations thereof.

[0176] For the purposes of the present invention, "hydrocarbon-based oil" or "hydrocarbon oil" is intended to mean an oil that contains mainly hydrogen and carbon atoms, and optionally oxygen, nitrogen, sulfur and / or phosphorus atoms. Hydrocarbon-based oils do not contain any silicon atoms.

[0177] For the purposes of the present invention, "silicone oil" is intended to mean an oil comprising at least one silicon atom and in particular at least one Si-O group, such as dimethicone.

[0178] The pH of the composition according to the present invention may generally be, for example, 2-7, preferably 3-7, and more preferably 4-6.

[0179] The composition according to the present invention can be prepared by mixing components (a) to (c) through a conventional technique in the art. The other components can be mixed with these components. While mixing these components, they can be heated if necessary.

[0180] [Cosmetic methods and uses] The present invention relates to a cosmetic method for caring for or conditioning the scalp, which comprises applying to the scalp a composition according to the invention.

[0181] Cosmetic regimen means herein a non-therapeutic cosmetic regimen for caring for and / or conditioning the scalp.

[0182] The step of applying can be carried out by any conventional means, such as by applicator, for example, by hand, spray, brush, etc. The step of applying can be a step of topical application.

[0183] The composition according to the present invention is intended to be used as a leave-on cosmetic composition.Therefore, the cosmetic method according to the present invention does not include the step of rinsing or washing off the applied composition after the step of application.In one embodiment of the present invention, the cosmetic method according to the present invention does not include the step of rinsing or washing off the applied composition within 1 hour, preferably within 2 hours, more preferably within 4 hours, and even more preferably within 8 hours after the step of application.

[0184] Moreover, the present invention also relates to the use of the composition according to the invention in the cosmetics field, in particular in caring for and / or conditioning the scalp.

[0185] The present invention also relates to the use of (b) a sugar alcohol to mask the powdery feel caused by (a) a powdered active agent contained in a water-based composition. The composition may contain an oil in an amount ranging from 0% to 5% by weight, preferably from 0% to 0.5% by weight, more preferably from 0% to 0.1% by weight, based on the total weight of the composition, or the composition may be free of oil.

[0186] The same explanations given for the composition comprising (a) at least one powdered active agent, (b) at least one sugar alcohol, and (c) water in the composition of the invention can also be applied to the method and use according to the invention. The composition used in the method and use according to the invention may comprise any of the optional ingredients described above for the composition according to the invention. EXAMPLES

[0187] The present invention will now be described in more detail by way of examples. However, these examples should not be construed as limiting the scope of the present invention.

[0188] In the examples, "maltitol (and) sorbitol" is obtained from Kankosha Co., Ltd. and sold under the name "Amalty Syrup", and oryzanol is obtained from Tsuno Foods Co., Ltd. and sold under the name "Gamma Oryzanol".

[0189] [Composition] The compositions according to Example 1 and Comparative Examples 1-3 were prepared according to the following preparation protocol. The formulation ratios are shown in Table 2 below. In Table 2, all ingredients are based on "mass %" of the active ingredient.

[0190] [Preparation protocol] 1) If present, water soluble ingredients such as Polyglyceryl-4 Caprate, Nymphaea Alba Extract, Propylene Glycol, Arginine and Sugar Compounds are added to the water. 2) Stir at room temperature until all ingredients are completely dissolved. 3) Add oily or powdered ingredients such as ginger extract and oryzanol. Pre-adjust the pH to be slightly acidic (approximately 6). 4) Stir at room temperature until all ingredients are completely dissolved. 5) Add sodium hyaluronate, ethanol, sclerotium gum, xanthan gum, and menthol to adjust the final pH to 5.3.

[0191] [evaluation] (Sensory evaluation) A hair tress (1 g, 27 cm) was prepared for each experiment. Each tress was washed with plain shampoo before application of the composition. The formulation ratio of the plain shampoo is shown in Table 1 below. In Table 1, all ingredients are based on "mass %" of active ingredients. 0.2 g of each of the compositions according to Example 1 and Comparative Examples 1-3 was applied to each tress using a brush, followed by blow drying. Five expert panelists evaluated the sensory aspects of "stiffness", "natural feeling" and "smoothness", then collectively rated them as "touch" on a five-level scale (++, +, =, -, --) and compared with the benchmark composition of Comparative Example 1.

[0192] [Table 1]

[0193] The results are shown in Table 2.

[0194] [Table 2]

[0195] As can be seen from the results shown in Table 2, the composition according to Example 1 containing components (a)-(c) of the present invention provided improved sensory properties to the hair.

[0196] In contrast, (b) the compositions according to Comparative Examples 1 to 3, which did not contain sugar alcohol, did not show any improvement in terms of sensory properties.

[0197] It can therefore be concluded that the cosmetic composition according to the present invention is highly suitable as a cosmetic composition for caring for and / or conditioning the scalp.

Claims

1. A composition for caring for the scalp, comprising: (a) at least one powdered active agent; (b) at least one sugar alcohol; (c) Water and A composition comprising:

2. 10. The composition of claim 1, wherein (a) the powdered active agent is an organic compound.

3. 10. The composition of claim 1, wherein (a) the powdered active agent is a lipophilic and water-insoluble active agent.

4. 2. The composition according to claim 1, wherein (a) the powdered active agent is an active agent for the skin and / or scalp selected from anti-aging active agents and active agents having anti-free radical properties or free radical scavengers.

5. 2. The composition of claim 1, wherein the (a) powdered active agent is selected from retinol (vitamin A) and derivatives such as retinol esters, retinyl palmitate, retinyl propionate, carotenes including beta-carotene, tocopherol (vitamin E) and derivatives such as tocopheryl acetate, D vitamins, vitamin D2, vitamin D3, ascorbyl palmitate, vitamin F glycerides, coenzyme Q10 or ubiquinone, ceramides, organic acid esters, and unsaponifiables with cosmetic and / or dermatological properties including tocotrienols, sesamin, phytosterols, squalene, waxes, and terpenes.

6. 2. The composition of claim 1, wherein (b) the sugar alcohol comprises at least one disaccharide sugar alcohol.

7. The composition of claim 1, wherein (b) the sugar alcohol comprises at least two types of sugar alcohol.

8. 2. The composition of claim 1, wherein (b) the sugar alcohol comprises a combination of at least one monosaccharide sugar alcohol and at least one disaccharide sugar alcohol.

9. 2. The composition according to claim 1, wherein (a) the powdered active agent is present in a content ranging from 0.01% to 5% by weight, preferably from 0.05% to 3% by weight, and even more preferably from 0.2% to 1% by weight, relative to the total weight of the composition.

10. 2. The composition according to claim 1, wherein (b) the sugar alcohol is present in a content ranging from 0.05% to 3% by weight, preferably from 0.1% to 2% by weight, more preferably from 0.2% to 1.5% by weight, relative to the total weight of the composition.

11. 2. The composition according to claim 1, wherein (c) water is present in a content ranging from 40% to 95% by weight, preferably from 50% to 85% by weight, and more preferably from 60% to 80% by weight, relative to the total weight of the composition.

12. 2. The composition according to claim 1, which is in non-emulsion form, such as a solution, in particular an aqueous solution, and a serum.

13. 10. The composition according to claim 1, which is a leave-on cosmetic composition.

14. 2. The composition according to claim 1, comprising the oil in an amount ranging from 0% to 5% by weight, preferably from 0% to 0.5% by weight, more preferably from 0% to 0.1% by weight, relative to the total weight of the composition.

15. 15. A cosmetic method for caring for or conditioning keratinous fibers, preferably hair, comprising the step of applying on the keratinous fibers a composition according to any one of claims 1 to 14.