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WO2016124441A1 - Composition comprenant un amidon modifié et du silicate de magnésium - Google Patents

Composition comprenant un amidon modifié et du silicate de magnésium Download PDF

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Publication number
WO2016124441A1
WO2016124441A1 PCT/EP2016/051534 EP2016051534W WO2016124441A1 WO 2016124441 A1 WO2016124441 A1 WO 2016124441A1 EP 2016051534 W EP2016051534 W EP 2016051534W WO 2016124441 A1 WO2016124441 A1 WO 2016124441A1
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WO
WIPO (PCT)
Prior art keywords
composition according
composition
starch
weight
magnesium silicate
Prior art date
Application number
PCT/EP2016/051534
Other languages
English (en)
Inventor
Maud Rieffel
Sabina Meralli
Original Assignee
L'oreal
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by L'oreal filed Critical L'oreal
Publication of WO2016124441A1 publication Critical patent/WO2016124441A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A61Q19/007—Preparations for dry skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/25—Silicon; Compounds thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/34—Alcohols
    • A61K8/345—Alcohols containing more than one hydroxy group
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73—Polysaccharides
    • A61K8/732—Starch; Amylose; Amylopectin; Derivatives thereof

Definitions

  • the present invention relates to compositions, especially non-therapeutic and/or makeup cosmetic compositions, containing a modified starch and a magnesium silicate.
  • Urea and glycerol are considered as humectants: I.e. small molecules which penetrate into the stratum corneum and keep it moisturized. In order to have a moisturizing effect throughout the day, it is necessary to introduce into cosmetic compositions large amounts of these molecules.
  • urea and glycerol especially have the drawback of making formulations tacky, especially when they are used in high concentration.
  • the object of the present invention is, precisely, to propose a solution to this lack of moisturizing topical galenical formulations.
  • composition especially a cosmetic composition, comprising:
  • the inventors have found, unexpectedly, that the combination of a mixture of particular fillers makes it possible to obtain, on topical application of a composition, a significantly improved quality of deposit.
  • the composition may be sprayed easily and without a dragging sensation, and, after drying, the feel turns out to be soft, non-tacky and non-greasy. These properties are obtained while at the same time having good moisturizing power.
  • compositions according to the invention thus afford, when they are applied and after application, good sensory properties.
  • the present invention relates to a non- therapeutic process for caring for and/or making up a keratin material and especially the skin, comprising the topical application to said keratin material of a composition in accordance with the invention.
  • the present invention also relates to the use of an effective amount of modified starch and of magnesium silicate, for giving a topical cosmetic composition a glidant, non- tacky and soft nature during and at the end of application and after application.
  • alkyl means a linear or branched, saturated C8-C24, better still C12-C20 and more preferentially C14-C18 hydrocarbon-based chain.
  • acyl means a linear or branched saturated C8-C24, better still C12- C20 and more preferentially C14-C18 hydrocarbon-based chain comprising a carboxylic function whose hydroxyl function (-OH) has been substituted.
  • the modified starch is preferably an oxidized and esterified starch (or oxidized starch ester).
  • oxidized means that at least one hydroxyl of the starch has been oxidized, in particular in position 6 of a glucose unit of the starch: the groups -CH 2 -OH becoming an aldehyde group -C(0)-H or carboxylic group -C(0)-OH.
  • esters or “esterified” means that at least one hydroxyl group of the glucose unit A of the starch is esterified with a (thio)carboxylic acid, particularly a (Cl- C8)(thio)carboxylic acid, and preferably with an acetic acid to obtain an ester B, C or D with C and D corresponding, respectively, to the end or the start of the starch, Ra, Rb, Rc, Rd and Re representing a hydrogen atom or an alkyl(thio)carbonyl group such as (Ci- C 8 )alkyl-C(0)- or (Ci-C 8 )alkyl-C(S)-, it being understood that at least one of the radicals Ra, Rb, Rc, Rd and Re represents an alkyl(thio)carbonyl in at least one unit of the starch:
  • oxidized ester means that at least one hydroxyl group of the starch is oxidized as defined above and that at least one other hydroxyl group of the starch is esterified as defined above.
  • the composition of the invention comprises as esterified oxidized starch a starch which comprises at least one linear glucose polymer, i.e. an amylose derivative of formula (I) and/or at least one branched glucose polymer, i.e. an amylopectin derivative of formula (II), anomers thereof, preferably alpha-anomers, salts thereof and solvates thereof such as hydrates thereof:
  • R 1 , R 2 , R 3 , R 4 and R 5 which may be identical or different, represent a hydroxymethyl group -CH 2 -OH or an oxidized form such as -CH 2 -C(0)-H, or - C(0)-OH, it being understood that at least one of the radicals R 1 , R 2 , R 3 , R 4 or R represents an oxidized form, preferably -C(0)-OH, and more particularly R is an oxidized form and R 1 , R 2 , R 3 and R 5 represents a hydroxymethyl group;
  • R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 , and R 16 which may be identical or different, represent a hydroxyl group or a group (Ci-Cs)alkylcarbonyloxy, or a group (Ci-C 8 )alkylthiocarbonyloxy, preferably a hydroxyl group or a group (Ci- C 6 )alkylcarbonyloxy such as an acetyl group, it being understood that at least one of the radicals R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 or R 16 represents a group (Ci-C 8 )alkylcarbonyloxy, or a group (Ci-C 8 )alkylthiocarbonyloxy, preferably a group (Ci-Ce)alkylcarbonyloxy such as an acetyl group, more particularly
  • n represents an integer, for example between 50 and 300 000, preferably between 100 and 200 000, more particularly from 200 to 100 000, better still from 400 to 100 000 and even better still from 470 to 95 000.
  • the average molecular weight of the modified amylopectin of formula (II) is at least 10 7 and may be greater than 10 9 .
  • the oxidized starch ester comprises a mixture of linear and branched glucose polymers, i.e. a mixture of amylose derivatives and of amylopectin derivatives and more particularly in an amount ranging from 10% to 40% by weight of amylose and from 60% to 90% of amylopectin; and preferably from 15% to 20% of amylose and from 80% to 85% of amylopectin.
  • the oxidized starch ester comprises a major amount of amylose derivatives, preferably from 60% to 100% and more particularly from 80%> to 85%> by weight.
  • the oxidized starch ester preferably oxidized starch acetate, comprises amylose derivatives of formula (I) with an average molecular weight of 10 4 to 10 7 , preferably 10 5 to 10 6 , which means that they have a mean degree of polymerization (DP, number of glucosyl units per molecule) ranging from 50 to 20 000, preferably from 100 to 10 000 and more particularly from 600 to 6000.
  • DP mean degree of polymerization
  • the oxidized starch ester is derived from any natural starch obtained from plants.
  • a natural starch may be found, for example, in arrow-root, tapioca, potato, sweet potato, beans (broad beans and peas), lentils, buckwheat, banana, barley, cassava, corn, kudzu, oca (Oxalis tuberosa Molina), rice, sago, sorghum, coco-yam and wheat, and mixtures thereof.
  • tapioca, potato and wheat are used to produce the esterified and in particular acetylated oxidized starch according to the invention. Tapioca starch will preferably be used.
  • the oxidized starch ester is an acetylated modified starch.
  • acetylated modified starch is a white powder of INS E number 1451, and CAS number 68187-08-6
  • the viscosity of the oxidized starch ester, particularly the acetylated starch is in the range from 10 cP to 2000 cP, preferably from 18 cP to 1500 cP, more particularly from 18 cP to 1400 cP at a temperature of at least 25°C, preferably at a temperature of at least 45°C, preferably less than 85°C.
  • the viscosity of the oxidized modified starch ester, particularly the acetylated modified starch is evaluated using a Brookfield NDJ-1 viscometer.
  • the esterification index is preferably greater than 0.05.
  • the amount of ester such as a (Ci-Cs)alkylcarbonyloxy group or a (Ci-C8)alkylthiocarbonyloxy group, preferably a (Ci- Ce)alkylcarbonyloxy group such as acetyl, of an esterified, in particular acetylated, oxidized starch ranges from 0.1% to 2.5% by weight and preferably from 0.5% to 1% by weight relative to the total weight of the starch. It is understood that the percentage corresponds to the number of hydroxyl groups on the starch that have been esterified relative to the molecular weight of the modified starch.
  • the oxidized starch ester particularly the acetylated oxidized starch, comprises from 0.25%> to 5% of carboxyl groups, preferably from 0.3%) to 0.75%> of carboxyl groups and more preferably from 0.35%> to 0.5%> of carboxyl groups relative to the total weight of the starch.
  • the oxidized starch ester preferably the acetylated oxidized starch
  • the esterified oxidized starch is a starch which comprises at least one linear glucose polymer, i.e. an amylose derivative of formula (I) and/or at least one branched glucose polymer, i.e. an amylopectin derivative of formula (II) as defined above, in which n is between 470 and 95 000 and
  • R 1 , R 2 , R 3 and R 5 represent a hydroxymethyl group
  • R 7 , R 8 , R 9 , R 10 , R 11 , R 13 , R 14 , R 15 and R 16 represent a hydroxyl group; and - R 4 represents a carboxyl group -C(0)-OH or salts thereof; and
  • R 12 represents a (Ci-Ce)alkylcarbonyloxy group such as acetyl.
  • Such a starch is especially sold under the name "Acetylated oxidized starch” by the company Zhucheng Xingmao Corn Developing Co., Ltd., under the name “OXC-10” by Suzhou Gaofeng Starch Technology Co., Ltd. or under the name “MS#6100” by Asia Modified Starch Co., Ltd, etc.
  • the esterified oxidized modified starch may be readily produced in a manner known to those skilled in the art.
  • the manufacturing process includes two reaction steps of oxidation and esterification.
  • the oxidation step may be performed by dispersing the native starch in water followed by oxidation with sodium hydroxide and sodium hypochlorite. Sodium metabisulfite is then added to stop the reaction, and the medium is then neutralized with hydrochloric acid.
  • the esterification step may be performed by esterifying the starch obtained in step 1 with acetic anhydride, followed by neutralization with hydrochloric acid.
  • the esterified oxidized starch may be present in the composition according to the invention in a content ranging from 1% to 15% by weight, preferably from 3% to 12% by weight and better still from 5% to 10% by weight, relative to the total weight of the composition.
  • the magnesium silicates in accordance with the invention may be of natural or synthetic origin.
  • Talc is particularly preferred as a magnesium silicate in accordance with the invention.
  • Talcs are hydrated magnesium silicates usually also comprising aluminium silicate.
  • the crystal structure of talc consists of repeated layers of a sandwich of brucite between layers of silica.
  • the talc has a volume-median particle diameter ranging from 100 nm to 150 microns, better still between 500 nm and 50 microns and even more preferentially between 1 and 20 microns.
  • the diameter is measured by laser scattering with a machine of the Malvern Mastersizer type.
  • the talc in accordance with the invention may be chosen from those sold under the names Talc SG-2000 ® sold by the company Nippon Talc, Luzenac Pharma M ® sold by the company Luzenac, J-68BC from US Corporation and Micro ACE-P-3 ® sold by the company Nippon Talc.
  • Use will preferably be made of the talc sold under the name Luzenac 00 by the company Imerys.
  • the magnesium silicate may be present in the composition according to the invention in a content ranging from 0.1% to 5% by weight, better still from 0.1% to 3% and more particularly from 0.5% to 1.5% by weight of talc relative to the total weight of the composition.
  • the modified starch and the magnesium silicate are used in a modified starch/magnesium silicate weight ratio ranging from 5 to 10 and preferably from 6 to 8.
  • a composition according to the invention is preferably cosmetic and is more particularly intended for topical application. It consequently contains a physiologically acceptable medium, i.e. a medium that is compatible with human keratin materials such as the skin, especially of the face and/or the body.
  • a physiologically acceptable medium i.e. a medium that is compatible with human keratin materials such as the skin, especially of the face and/or the body.
  • compositions according to the invention may be in the form of aqueous solutions, aqueous-alcoholic solutions, emulsions, especially oil-in-water (O/W) emulsions, water-in-oil (W/O) emulsions or multiple emulsions (triple: W/O/W or 0/W/O), or aqueous gels.
  • O/W oil-in-water
  • W/O water-in-oil
  • aqueous gels emulsions
  • the compositions may also be anhydrous. These compositions are prepared according to the usual methods.
  • the composition is in the form of an emulsion, in particular an oil-in- water emulsion.
  • the physiologically acceptable medium may comprise water, organic solvents such as a C1-C8 alcohol, especially ethanol, isopropanol, tert-butanol or n-butanol; a polyol such as glycerol; a glycol such as butylene glycol, isoprene glycol, propylene glycol or polyethylene glycols such as PEG-8; or polyol ethers.
  • the composition according to the invention may comprise an amount of aqueous phase which may range, for example, from 30% to 97% by weight, preferably from 40% to 95% by weight and better still from 50% to 90% by weight, relative to the total weight of the composition.
  • the aqueous phase comprises water and any other water-soluble compound optionally present, especially such as water-soluble solvents and additives (for example hydrophilic surfactants and active agents).
  • Water-soluble solvents that may especially be mentioned are lower alcohols and polyols.
  • the term "lower alcohol” means alcohols comprising from 1 to 8 and more particularly from 1 to 6 carbon atoms, such as ethanol.
  • Examples of polyols that may be mentioned include glycerol, propylene glycol, butylene glycol and polyethylene glycols (for example PEG-8). These alcohols and/or polyols may be present in the composition in an amount preferably ranging from 0.1% to 25% and better still from 1% to 15% of the total weight of the composition.
  • the fatty phase can represent more than 90% of the total weight of the composition.
  • the proportion of the fatty phase may range from 2% to 80% by weight and preferably from 5% to 50% by weight relative to the total weight of the composition.
  • the oils, waxes, emulsifiers and co-emulsifiers used in the composition in emulsion form are chosen from those conventionally used in the cosmetics field.
  • the emulsifier and the co-emulsifier are present in the composition in a proportion ranging from 0.3% to 30% by weight and preferably from 0.5% to 20% by weight relative to the total weight of the composition.
  • the emulsion may also contain lipid vesicles.
  • the fatty phase consists of oils and of any other fatty substances and lipophilic constituents that may be present in the composition of the invention. Any cosmetically acceptable oil may be used.
  • oil means a fatty substance that is liquid at room temperature (25 °C) and at atmospheric pressure.
  • oils examples include: - hydrocarbon-based oils of animal origin, such as perhydrosqualene and squalane;
  • oils of plant origin such as liquid fatty acid triglycerides containing from 4 to 10 carbon atoms, for instance heptanoic or octanoic acid triglycerides, or alternatively, for example, sunflower oil, corn oil, soybean oil, marrow oil, grapeseed oil, sesameseed oil, hazelnut oil, apricot oil, macadamia oil, arara oil, sunflower oil, castor oil, avocado oil, caprylic/capric acid triglycerides, for instance those sold by the company Stearineries Dubois or those sold under the names Miglyol 810, 812 and 818 by the company Dynamit Nobel, jojoba oil and shea butter oil;
  • esters and ethers especially of fatty acids, for instance the oils of formulae R1COOR2 and R10R2 in which Rl represents the residue of a fatty acid containing from 8 to 29 carbon atoms and R2 represents a branched or unbranched hydrocarbon-based chain containing from 3 to 30 carbon atoms, for instance Purcellin oil, isononyl isononanoate, isopropyl myristate, 2-ethylhexyl palmitate, 2-octyldodecyl stearate, 2-octyldodecyl erucate or isostearyl isostearate; hydroxylated esters, for instance isostearyl lactate, octyl hydroxy stearate, octyldodecyl hydroxystearate, diisostearyl malate or triisocetyl citrate; fatty alcohol heptanoates, octanoates or de
  • hydrocarbons of mineral or synthetic origin such as volatile or non-volatile liquid paraffins, and derivatives thereof, petroleum jelly, polydecenes, and hydrogenated polyisobutene such as Parleam oil;
  • volatile linear alkanes advantageously of plant origin, comprising from 7 to 17 carbon atoms, in particular from 9 to 15 carbon atoms and more particularly from 1 1 to 13 carbon atoms.
  • volatile linear alkanes that are suitable for use in the invention, mention may be made of those described in patent application WO 2007/068 371 from the company Cognis.
  • n-nonane C9
  • n-decane CIO
  • CI 1 n-undecane
  • CI 2 n-dodecane
  • CI 3 n-tridecane
  • CI 4 n-tetradecane
  • CI 5 n-pentadecane
  • CI 6 n-hexadecane
  • CI 7 n-heptadecane
  • use will be made of a mixture of undecane (CI 1) and of tridecane (C13) as obtained in Examples 1 and 2 of patent application WO 2008/155 059 from the company Cognis.
  • n-dodecane (CI 2) and n-tetradecane (CI 4) such as those sold by Sasol under the references, respectively, Parafol 12-97 and Parafol 14-97, and also mixtures thereof.
  • silicone oils for instance volatile or non-volatile polymethylsiloxanes (PDMSs) containing a linear or cyclic silicone chain, which are liquid or pasty at room temperature, especially cyclopolydimethylsiloxanes (cyclomethicones) such as cyclohexasiloxane and cyclopentasiloxane; polydimethylsiloxanes (or dimethicones) comprising alkyl, alkoxy or phenyl groups, which are pendent or at the end of a silicone chain, these groups containing from 2 to 24 carbon atoms; phenylsilicones, for instance phenyl trimethicones, phenyl dimethicones, phenyltrimethylsiloxydiphenylsiloxanes, diphenyl dimethicones, diphenylmethyldiphenyltrisiloxanes, 2-phenylethyl trimethylsiloxysilicates and polymethylphenylsi
  • - fatty alcohols containing from 8 to 26 carbon atoms for instance cetyl alcohol, stearyl alcohol and a mixture thereof (cetylstearyl alcohol);
  • oils chosen from:
  • esters derived from the reaction of at least one fatty acid containing at least 6 carbon atoms, preferably from 6 to 26 carbon atoms, better still from 6 to 20 carbon atoms and even better still from 6 to 16 carbon atoms, and of at least one alcohol comprising from 1 to 17 carbon atoms and better still from 3 to 15 carbon atoms; mention may in particular be made of isopropyl myristate, isopropyl palmitate, 2-ethylhexyl caprate/caprylate (or octyl caprate/caprylate), 2-ethylhexyl palmitate, isostearyl neopentanoate, isononyl isononanoate, hexyl laurate, lactic acid esters of fatty alcohols comprising 12 or 13 carbon atoms, and dicaprylyl carbonate, such as the product which is sold under the name Cetiol CC by the company Cognis,
  • fatty acid ethers comprising from 6 to 20 carbon atoms, such as dicaprylyl ether (Cetiol OE from Cognis),
  • the fatty phase may be present in the composition according to the invention in an amount ranging from 5% to 60%, better still ranging from 5% to 50% and preferably from 10% to 40% by weight relative to the total weight of the composition.
  • composition according to the invention may comprise from 5% to 40% and preferably from 10% to 30% by weight of oils relative to the total weight of the composition.
  • composition of the invention may contain other fatty substances in the fatty phase, such as fatty acids containing from 8 to 30 carbon atoms, for instance stearic acid; silicone resins such as trifluoromethyl-Cl-4-alkyl dimethicone and trifluoropropyl dimethicone; silicone gums (dimethiconol), non- emulsifying silicone elastomers, for instance the products sold under the names KSG 6 and KSG 16 by the company Shin-Etsu, under the names Trefil, BY29 and EPSX by the company Dow Corning, or under the name Gransil by the company Grant Industries; waxes, for example mineral waxes, waxes of animal origin, for instance beeswax, waxes of plant origin, hydrogenated oils that are solid at 25°C, fatty esters and glycerides that are solid at 25°C, synthetic waxes and silicone waxes; pasty fatty substances such as and also butters such as
  • the composition comprises at least one surfactant chosen in particular from nonionic surfactants more particularly such as fatty acid esters of polyols.
  • fatty acid esters of polyols means esters of a fatty acid and of a polyol in which the fatty acid comprises a C6-C22 and preferably C16-C20 alkyl chain and the polyol is chosen from glycerol, a polyglycerol, sorbitan and sugars such as glucose, and mixtures thereof.
  • the fatty acid ester of a polyol is a CI 6- C20 fatty acid ester of polyglycerol and of glucose and/or sorbitan, and mixtures thereof.
  • the surfactant(s) may be present in a content ranging from 0.05% to 5% by weight relative to the total weight of the composition, preferably from 0.1% to 3% by weight relative to the total weight of the composition.
  • composition of the invention for topical application may also contain one or more adjuvants that are common in cosmetics or dermatology.
  • adjuvants are used in the usual proportions in the cosmetics field, for example from 0.01% to 30% of the total weight of the composition, and, depending on their nature, they are introduced into the aqueous phase of the composition or into the oily phase, or alternatively into vesicles or any other type of vector.
  • hydrophilic thickeners examples include modified or unmodified carboxyvinyl polymers, such as the products sold under the names Carbopol (INCI name: carbomer) by the company Noveon; polyacrylamides; polymers and copolymers of 2-acrylamido-2-methylpropanesulfonic acid, which are optionally crosslinked and/or neutralized, such as the poly(2-acrylamido-2- methylpropanesulfonic acid) sold by the company Clariant under the name Hostacerin AMPS (INCI name: ammonium polyacryldimethyltauramide); crosslinked anionic copolymers of acrylamide and AMPS, in the form of a W/O emulsion, such as those sold under the name Sepigel 305 (CTFA name: Polyacrylamide/C13-14 isoparaffin/Laureth-7) and under the name Simulgel 600 (CTFA name
  • Lipophilic gelling agents that may especially be mentioned include modified clays such as modified magnesium silicate (Bentone Gel VS38 from Rheox), or hectorite modified with distearyldimethylammonium chloride (INCI name: Disteardimonium hectorite) sold under the name Bentone 38 CE by the company Rheox.
  • modified clays such as modified magnesium silicate (Bentone Gel VS38 from Rheox), or hectorite modified with distearyldimethylammonium chloride (INCI name: Disteardimonium hectorite) sold under the name Bentone 38 CE by the company Rheox.
  • an optionally crosslinked and/or neutralized 2-acrylamido-2-methylpropanesulfonic acid homopolymer for instance poly(2- acrylamido-2-methylpropanesulfonic acid) sold by the company Clariant under the name Hostacerin AMPS (CTFA name: ammonium polyacryldimethyltauramide).
  • vitamins such as vitamin A (retinol), vitamin E
  • composition will comprise at least one moisturizer.
  • the moisturizers are especially chosen from polyols, for instance glycerol and sugars, urea and derivatives thereof especially such as hydroxyalkyl urea, in particular hydroxyalkyl urea, and mixtures thereof.
  • the moisturizers are generally present in the compositions according to the invention in a content ranging from 0.1% to 30% by weight and preferably from 1% to 15% by weight relative to the total weight of the composition.
  • the composition may be in the form of an aqueous, alcoholic, aqueous-alcoholic or oily solution; a dispersion of the lotion or serum type; emulsions, especially water-in-oil, oil-in-water or multiple emulsions; a suspension; microcapsules or microparticles; vesicular dispersions of ionic and/or nonionic type; an aqueous or oily lotion or a lotion in serum form; capsules, granules, syrups or tablets; foams, solid preparations; an aerosol composition also comprising a propellant under pressure.
  • the composition may be in the form of a protecting, treating or care composition for the face, the hands, the feet, the major anatomical folds or the body (for example, day cream, night cream, makeup-removing cream, antisun composition, protective or care body milk, aftersun milk, lotion, gel or foam for caring for the skin, such as cleansing lotions, or artificial tanning compositions); a composition for making up the body or face, such as a foundation; a deodorizing composition comprising, for example, a bactericidal agent; an aftershave composition.
  • a protecting, treating or care composition for the face, the hands, the feet, the major anatomical folds or the body for example, day cream, night cream, makeup-removing cream, antisun composition, protective or care body milk, aftersun milk, lotion, gel or foam for caring for the skin, such as cleansing lotions, or artificial tanning compositions
  • a composition for making up the body or face such as a foundation
  • a deodorizing composition comprising, for example, a bacterici
  • the present invention relates to a non-therapeutic cosmetic process, comprising at least one step of topical application to the skin of a composition according to the invention, in particular to the skin of the face and/or body and most particularly bodily skin.
  • the cosmetic process according to the invention may be performed by topical application, for example daily, of at least one composition comprising it, which may be formulated, for example, in the form of a cream, gel, serum, lotion, emulsion, or aftersun composition.
  • the application is repeated, for example 1 to 2 times daily, over several weeks, in particular at least 4 weeks, indeed even 4 to 15 weeks, with, if appropriate, one or more periods of interruption.
  • composition according to the invention will vary as a function of the nature of the galenical form under consideration and of the desired effect.
  • the composition may remain in contact with the skin for between 1 minute and 12 hours; it may or may not be removed, especially by rinsing, on conclusion of this contact time.
  • composition according to the invention was prepared conventionally.
  • An oil-in-water emulsion thickened with ammonium polyacryldimethyltauramide and xanthan gum was prepared at 30°C, and the starch and talc were then introduced into the composition with stirring.
  • This composition was applied to the body twice a day for 4 weeks. Application is quick and easy.
  • the skin is moisturized, soft, supple and non-tacky with a soft, powdery, velvety finish.

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Abstract

La présente invention concerne une composition, notamment une composition cosmétique, comprenant : - au moins un amidon modifié, en particulier un amidon oxydé et estérifié, et - au moins un silicate de magnésium.
PCT/EP2016/051534 2015-02-02 2016-01-26 Composition comprenant un amidon modifié et du silicate de magnésium WO2016124441A1 (fr)

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FR1550777 2015-02-02
FR1550777A FR3032116B1 (fr) 2015-02-02 2015-02-02 Composition comprenant un amidon modifie et un silicate de magnesium

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