WO2021130192A1 - Composition comprising ascorbic acid - Google Patents

Composition comprising ascorbic acid Download PDF

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Publication number
WO2021130192A1
WO2021130192A1 PCT/EP2020/087533 EP2020087533W WO2021130192A1 WO 2021130192 A1 WO2021130192 A1 WO 2021130192A1 EP 2020087533 W EP2020087533 W EP 2020087533W WO 2021130192 A1 WO2021130192 A1 WO 2021130192A1
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WIPO (PCT)
Prior art keywords
composition
weight
acid
composition according
notably
Prior art date
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PCT/EP2020/087533
Other languages
French (fr)
Inventor
Muriel ISOIR-INGREZ
Elodie LABARRERE
Cécile Kermorvan
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L'oreal
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Publication of WO2021130192A1 publication Critical patent/WO2021130192A1/en

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/81Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • A61K8/8141Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • A61K8/8158Homopolymers or copolymers of amides or imides, e.g. (meth) acrylamide; Compositions of derivatives of such polymers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/02Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04Dispersions; Emulsions
    • A61K8/06Emulsions
    • A61K8/062Oil-in-water emulsions
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/67Vitamins
    • A61K8/676Ascorbic acid, i.e. vitamin C
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00Preparations for care of the skin
    • A61Q19/08Anti-ageing preparations
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/59Mixtures
    • A61K2800/594Mixtures of polymers

Definitions

  • the present invention relates to the field of caring for and/or making up keratin materials, in particular to the anti-ageing care of keratin materials, notably of the skin.
  • keratin materials notably denotes the skin, the lips and/or the eyelashes, in particular the skin and/or the lips, and preferably the skin of the body and/or the face, and more preferentially of the face.
  • Skin ageing results from the effects of intrinsic and extrinsic factors on the skin. During the ageing process, a detrimental change in the structure and functions of the skin appears. The main clinical signs due to these modifications of the skin metabolism are the appearance of wrinkles and fine lines, the cause of which is a slackening and loss of the elasticity of the tissues.
  • intrinsic ageing which brings about the changes in the skin, notably causes slowing-down of the renewal of the skin cells, which is reflected essentially by the appearance of detrimental clinical changes, such as a reduction in the subcutaneous adipose tissue and the appearance of small wrinkles or fine lines, and by histopathological changes, such as an increase in the number and thickness of elastic fibres, a loss of vertical fibres from the membrane of the elastic tissue, and the presence of large irregular fibroblasts in the cells of this elastic tissue.
  • ascorbic acid or vitamin C
  • ascorbic acid stimulates the synthesis of connective tissue and notably of collagen, reinforces skin tissue defences against external attacking factors such as ultraviolet radiation and pollution, compensates for vitamin E deficiency in the skin, deep pigments the skin and has a free-radical- scavenging function.
  • ascorbic acid is efficient for combating the signs of ageing of the skin, for example for improving the radiance of the complexion and fading out wrinkles and/or fine lines in the skin.
  • these active agents are often unstable in oxidizing medium and thus very sensitive to certain environmental parameters, for instance light, oxygen and water. Rapid degradation of these active agents thus follows when they are in contact notably with one of these parameters, which runs counter to the desired efficacy. Furthermore, it remains very difficult to use them in large amounts, notably greater than 5% by weight.
  • vitamin C Another means consisted in stabilizing vitamin C via physical methods by incorporating it, for example, into cyclodextrins, zeolites or liposomes.
  • vitamin C derivatives more particularly in the form of phosphodiesters with vitamin E, for example.
  • Another stabilization means that has been suggested consists in chemically functionalizing the enediol group of vitamin C by formation of a phosphate or sulfate function or by formation of an ether or ester function.
  • US 5 140 043 recommends stabilizing it by introducing it into aqueous -alcoholic solutions, formed from at least 80% water and having a pH below 3.5.
  • aqueous -alcoholic solutions formed from at least 80% water and having a pH below 3.5.
  • said document teaches the use of a chelating agent such as ethylenediaminetetraacetic acid (EDTA), and conditioning it under nitrogen and protected from light, to improve the stability of ascorbic acid in aqueous solution.
  • a chelating agent such as ethylenediaminetetraacetic acid (EDTA)
  • EDTA ethylenediaminetetraacetic acid
  • US 5 853 741 describes the stabilization of ascorbic acid with non-emulsifying silicone elastomers known under the trade reference “Gransil”.
  • the drawback of these products is that they give an oily, greasy effect, without a freshness effect, which makes it difficult or impossible for them to be used in a hot and humid environment and/or by users with greasy skin.
  • these polymers are entirely water-repellent and difficult to incorporate into an aqueous phase. As a result of their high incompatibility with water and in particular with sweat, said sweat is not absorbed by these polymers and even has a tendency to "pearl" on the surface of the skin, when it perspires.
  • the current consumer demands are tending towards favouring the absence of silicone compounds in cosmetic compositions.
  • compositions that may notably be used in the cosmetic and/or dermatological fields, containing stabilized ascorbic acid and/or a derivative thereof in large amounts, notably greater than 5% by weight, which does not cause any skin irritation after application, and which is stable, notably Theologically stable.
  • compositions that may notably be used in the cosmetic field, in which one or more hydrophilic active agents, and notably vitamin C, are stable, notably from a rheological viewpoint, and which has good sensory qualities for its use in cosmetics, and which is notably light, non-tacky and non-pilling.
  • the need remains to efficiently stabilize several different active agents in a cosmetic composition, and notably in a composition of oil-in-water type.
  • the need also remains for cosmetic compositions that are compatible with the current consumer demands, notably regarding the environment.
  • the invention is precisely directed towards meeting these needs.
  • the present invention relates to a composition, notably a cosmetic composition, in particular for making up and/or caring for keratin materials, comprising:
  • compositions according to the invention can efficiently stabilize ascorbic acid and derivatives thereof in large amounts, optionally in combination with other active agents.
  • compositions according to the invention are stable, notably from a rheological viewpoint.
  • compositions in accordance with the invention are stable while at the same time having organoleptic properties which are pleasant for the user; in particular, they have a light finish, are not tacky and do not pill.
  • composition according to the invention does not comprise any controversial ingredients, and in particular does not comprise any ethylenediaminetetraacetic acid (EDTA) or a derivative thereof, or any silicone compounds.
  • EDTA ethylenediaminetetraacetic acid
  • compositions in accordance with the invention meet the environmental requirements and consumer demands.
  • a composition according to the invention is used in particular for caring for and/or making up keratin materials, and preferably for caring for keratin materials.
  • the invention also relates to a cosmetic process for making up and/or caring for, preferably caring for, keratin materials, in particular the skin and/or the lips, comprising at least one step of applying a composition according to the invention to said keratin materials.
  • a composition according to the invention comprises at least 5% by weight of ascorbic acid, also known as vitamin C, and/or of a derivative thereof, relative to the total weight of the composition.
  • a composition according to the invention comprises from 5% to 15% by weight of ascorbic acid, also known as vitamin C, and/or of a derivative thereof, relative to the total weight of the composition.
  • a composition according to the invention comprises from 5% to 12% by weight of ascorbic acid, also known as vitamin C, and/or of a derivative thereof, relative to the total weight of the composition.
  • composition according to the invention comprises from 5% to 15% by weight of ascorbic acid relative to the total weight of the composition.
  • a composition according to the invention comprises from 5% to 12% by weight of ascorbic acid relative to the total weight of the composition.
  • the ascorbic acid may be in D or L form, advantageously in L form, and analogues thereof chosen from salts thereof, preferably sodium ascorbate, magnesium or sodium ascorbyl phosphate, and glycosyl ascorbic acid.
  • Ascorbic acid derivatives that may be mentioned in particular include sugar esters of ascorbic acid and metal salts of phosphorylated ascorbic acid.
  • sugar esters of ascorbic acid that may be used in the invention are notably glycosyl, mannosyl, fmctosyl, fucosyl, galactosyl, N-acetylglucos amine and N-acetylmuramic derivatives of ascorbic acid and mixtures thereof and more especially ascorbyl-2 glucoside or 2-O-a-D-glucopyranosyl L-ascorbic acid or 6-0-P-D-galactopyranosyl L-ascorbic acid.
  • the latter compounds and processes for preparing them are described in particular in EP 487 404, EP 425 066 and J05213736.
  • the metal salt of phosphorylated ascorbic acid is chosen from alkali metal ascorbyl phosphates, alkaline-earth metal ascorbyl phosphates and transition metal ascorbyl phosphates.
  • the ascorbic acid derivatives that are suitable for use according to the present invention may be chosen from the 5,6-di-O-dimethylsilyl ascorbate sold under the reference PRO-AA by the company Exsymol, the potassium salt of dl-a-tocopheryl-dl-ascorbyl phosphate sold under the reference Sepivital EPC by the company Senju Pharmaceutical, magnesium ascorbyl phosphate, sodium ascorbyl phosphate sold under the reference Stay-C 50 by the company Roche and ascorbyl glucoside sold by the company Hayashibara.
  • Magnesium ascorbyl phosphate is preferably used.
  • a composition according to the invention may in particular comprise from 5% to 15% by weight of ascorbic acid and/or a derivative thereof, in particular from 5.5% to 12% by weight, preferably from 6% to 11% by weight and more preferentially from 6.5% to 10% by weight relative to the total weight of the composition.
  • a composition according to the invention may in particular comprise from 5% to 12% by weight of ascorbic acid and/or a derivative thereof, in particular from 5.5% to 10% by weight, preferably from 6% to 9% by weight and more preferentially from 6.5% to 7.5% by weight relative to the total weight of the composition.
  • composition according to the invention comprises at least one aqueous phase gelled with:
  • a composition according to the invention comprises an aqueous phase gelled with at least 1.8% by weight of an anionic terpolymer of 2-methyl-2-[(l-oxo- 2-propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate, in particular at least 1.9% by weight of an anionic terpolymer of 2-methyl-2-[(l-oxo-2-propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate, and preferably at least 2% by weight of an anionic terpolymer of 2-methyl-2-[(l-oxo- 2-prop
  • a composition according to the invention may comprise from 1.8% by weight to 4% by weight, in particular from 1.9% to 3% by weight and more preferentially from 2% to 2.5% by weight of an anionic terpolymer of 2-methyl-2-[(l-oxo-2- propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate, relative to the total weight of the composition.
  • a composition according to the invention comprises an aqueous phase gelled with at least 1.8% by weight of a mixture of an anionic terpolymer of 2-methyl-2-[(l-oxo-2-propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate and of a 2-acrylamido-2- methylpropanesulfonic acid polymer, i.e.
  • a 2-acrylamido-2-methylpropanesulfonic acid homopolymer in particular at least 1.9% by weight of a mixture of an anionic terpolymer of 2-methyl-2-[(l-oxo-2-propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate and of a 2-acrylamido-2- methylpropanesulfonic acid polymer, i.e.
  • a 2-acrylamido-2-methylpropanesulfonic acid homopolymer and preferably at least 2% by weight of a mixture of an anionic terpolymer of 2-methyl-2-[(l-oxo-2-propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate and of a 2-acrylamido-2- methylpropanesulfonic acid polymer, i.e. a 2-acrylamido-2-methylpropanesulfonic acid homopolymer, relative to the total weight of the composition.
  • a composition according to the invention may comprise from 0.8% by weight to 2% by weight, in particular from 0.9% to 1.5% by weight and more preferentially from 1% to 1.2% by weight of an anionic terpolymer of 2-methyl-2-[(l-oxo-2-propenyl)amino]- 1-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N- dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate, relative to the total weight of the composition, and from 0.8% to 2% by weight, in particular from 0.9% to 1.5% by weight and more preferentially from 1% to 1.2% by weight of a 2-acrylamido-2-methylpropanesulfonic acid polymer, i.e. a 2- acrylamido-2-methylpropanesulfonic acid homopolymer.
  • the 2-acrylamido-2-methylpropanesulfonic acid polymer i.e. the 2-acrylamido-2- methylpropanesulfonic acid homopolymer, that may be used in the composition according to the invention comprises 2-acrylamido-2-methylpropanesulfonic acid units of formula (I) below: in which X + is a proton, an alkali metal cation, an alkaline-earth metal cation or the ammonium ion.
  • 2-acrylamido-2-methylpropanesulfonic acid polymer i.e. as 2-acrylamido-2- methylpropanesulfonic acid homopolymer
  • 2-acrylamido-2- methylpropanesulfonic acid homopolymer that is suitable for use in the invention
  • Polyacryldimethyltauramide such as those described in patent EP 0 815 928 B1 and such as the product sold under the trade name Hostacerin AMPS ® by the company Clariant.
  • 2-acrylamido-2-methylpropanesulfonic acid polymer i.e. as 2-acrylamido-2- methylpropanesulfonic acid homopolymer
  • mention may be made in particular of crosslinked ammonium acrylamido- 2-methylpropanesulfonate polymers such as the product sold under the trade name Hostacerin AMPS ® by the company Clariant.
  • a composition according to the invention is free of natural or naturally sourced hydrophilic gelling agent, and in particular free of non-starchy polysaccharides.
  • a composition according to the invention is free of hydrophilic gelling agent of the sodium acrylamido-2-methylpropanesulfonate/hydroxyethyl acrylate copolymer type.
  • a composition according to the invention is free of hydrophilic gelling agent of the crosslinked acrylamide/sodium acrylamido-2-methylpropanesulfonate copolymer type.
  • composition according to the invention comprises at least boron nitride.
  • the boron nitride preferably has a number-average primary particle size of between 1 and 50 pm, better still between 1 and 30 pm, more preferentially between 1 and 25 pm and even more preferentially between 1 and 10 pm.
  • the term "primary particle size” means the maximum dimension that it is possible to measure between two diametrically opposite points of an individual particle.
  • the size may be determined, for example, by transmission electron microscopy or by measuring the specific surface area via the BET method or with a laser particle size analyser.
  • boron nitrides sold by Saint Gobain Ceramics, notably under the names PUHP3002, PUHP3008 or PUHP1030L, or Softouch BN CC6058 Powder from Momentive Performance Materials.
  • the boron nitride is preferably present in a composition according to the invention in an amount of between 0.5% and 6% by weight, better still in an amount of between 0.8% and 3% by weight, and even more preferentially in an amount of between 0.9% and 1.5% by weight, relative to the total weight of the composition.
  • a composition according to the invention comprises at least one fatty phase.
  • the fatty phase preferably contains at least one oil, notably a cosmetic oil. It may also contain other fatty substances.
  • oil means a water-immiscible non-aqueous compound that is liquid at room temperature (20°C) and at atmospheric pressure (760 mmHg).
  • a fatty phase that is suitable for preparing the compositions, notably cosmetic compositions, according to the invention may comprise hydrocarbon-based oils, silicone oils, fluoro oils or non-fluoro oils, or mixtures thereof.
  • the fatty phase of a composition according to the invention comprises less than 2% by weight of silicone oil(s), in particular less than 1% by weight of silicone oil(s), preferably less than 0.5% by weight of silicone oil(s) and more preferentially is free of silicone oil(s).
  • the oils may be volatile or non-volatile.
  • They may be of animal, plant, mineral or synthetic origin.
  • non-volatile refers to an oil whose vapour pressure at room temperature and atmospheric pressure is non-zero and is less than 10 3 mmHg (0.13 Pa).
  • silicone oil means an oil comprising at least one silicon atom, and notably at least one Si-0 group.
  • fluoro oil means an oil comprising at least one fluorine atom.
  • hydrocarbon-based oil means an oil mainly containing hydrogen and carbon atoms.
  • the oils may optionally comprise oxygen, nitrogen, sulfur and/or phosphorus atoms, for example in the form of hydroxyl or acid radicals.
  • volatile oil means any oil that is capable of evaporating on contact with the skin in less than one hour, at room temperature and atmospheric pressure.
  • the volatile oil is a volatile cosmetic compound, which is liquid at room temperature, notably having a non-zero vapour pressure, at room temperature and atmospheric pressure, notably having a vapour pressure ranging from 0.13 Pa to 40000 Pa (10 3 to 300 mmHg), in particular ranging from 1.3 Pa to 13 000 Pa (0.01 to 100 mmHg) and more particularly ranging from 1.3 Pa to 1300 Pa (0.01 to 10 mmHg).
  • the volatile oils may be hydrocarbon-based oils or silicone oils.
  • volatile hydrocarbon-based oils containing from 8 to 16 carbon atoms mention may be made notably of branched Cs-Ci 6 alkanes, for instance Cs-Ci 6 isoalkanes (also known as isoparaffins), isododecane, isodecane, isohexadecane and, for example, the oils sold under the trade names Isopar or Permethyl, branched Cs-Ci 6 esters, for instance isohexyl neopentanoate, and mixtures thereof.
  • the volatile hydrocarbon-based oil is chosen from volatile hydrocarbon-based oils containing from 8 to 16 carbon atoms and mixtures thereof.
  • Volatile silicone oils that may be mentioned include linear volatile silicone oils such as hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, tetradecamethylhexasiloxane, hexadecamethylheptasiloxane and dodecamethylpentasiloxane.
  • Volatile cyclic silicone oils that may be mentioned include hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, cyclohexasiloxane and dodecamethylcyclohexasiloxane, in particular cyclohexasiloxane.
  • the non-volatile oils may notably be chosen from non-volatile hydrocarbon-based, fluoro and/or silicone oils.
  • Non-volatile hydrocarbon-based oils that may notably be mentioned include:
  • hydrocarbon-based oils of plant origin such as squalane, synthetic ethers containing from 10 to 40 carbon atoms, such as dicapryl ether,
  • oils of formula R1COOR2 in which Ri represents a linear or branched fatty acid residue including from 1 to 40 carbon atoms and R2 represents a hydrocarbon-based chain that is notably branched, containing from 1 to 40 carbon atoms, on condition that Ri + R2 is greater than or equal to 10.
  • the esters may notably be chosen from esters of alcohol and of fatty acid, for instance cetostearyl octanoate, esters of isopropyl alcohol, such as isopropyl myristate, isopropyl palmitate, ethyl palmitate, 2-ethylhexyl palmitate, isopropyl stearate, octyl stearate, hydroxylated esters, for instance isostearyl lactate, octyl hydroxystearate, alcohol or polyalcohol ricinoleates, hexyl laurate, neopentanoic acid esters, for instance isodecyl neopentanoate, isotridecyl neopentanoate, isononanoic acid esters, for instance isononyl isononanoate, isotridecyl isononanoate and octyl isononanoate, o
  • - fatty alcohols that are liquid at room temperature, with a branched and/or unsaturated carbon-based chain containing from 12 to 26 carbon atoms, for instance 2-octyldodecanol, isostearyl alcohol and oleyl alcohol,
  • non-phenyl silicone oils for instance caprylyl methicone
  • phenyl silicone oils for instance phenyl trimethicones, phenyl dimethicones, phenyltrimethylsiloxydiphenylsiloxanes, diphenyl dimethicones, diphenylmethyldiphenyltrisiloxanes and 2-phenylethyl trimethylsiloxysilicates, dimethicones or phenyl trimethicone with a viscosity of less than or equal to 100 cSt, trimethylpentaphenyltrisiloxane, and mixtures thereof; and also mixtures of these various oils.
  • composition may also comprise at least one non-volatile oil, chosen in particular from non-volatile apolar hydrocarbon-based oils.
  • apolar oil means an oil whose solubility parameter at 25°C, 6 a , is equal to 0 (J/cm 3 ) 1 ⁇ 2 .
  • the parameters d r , di,. do and d a are expressed in (J/cm 3 ) 1 ⁇ 2 .
  • the non-volatile apolar hydrocarbon-based oil is free of oxygen atoms.
  • the non-volatile apolar hydrocarbon-based oil may be chosen from linear or branched hydrocarbons of mineral or synthetic origin. In particular, it may be chosen from:
  • Said non-volatile oil may also be an ester oil, in particular containing between 18 and 70 carbon atoms.
  • Examples that may be mentioned include monoesters, diesters or triesters.
  • the ester oils may notably be hydroxylated.
  • the non-volatile ester oil may preferably be chosen from:
  • R1COOR2 monoesters comprising between 18 and 40 carbon atoms in total, in particular the monoesters of formula R1COOR2 in which Ri represents a linear or branched fatty acid residue including from 4 to 40 carbon atoms and R2 represents a hydrocarbon-based chain that is notably branched, containing from 4 to 40 carbon atoms, on condition that Ri + R2 is greater than or equal to 18, for instance Purcellin oil (cetostearyl octanoate), isononyl isononanoate, C12 to C15 alkyl benzoate, 2-ethylhexyl palmitate, octyldodecyl neopentanoate, 2-octyldodecyl stearate, 2-octyldodecyl erucate, isostearyl isostearate, diisopropyl sebacate, 2-octyldodecyl benzoate, alcohol or polyalco
  • esters of formula R1COOR2 in which Ri represents a linear or branched fatty acid residue including from 4 to 40 carbon atoms and R2 represents a hydrocarbon-based chain that is notably branched, containing from 4 to 40 carbon atoms, Ri and R2 being such that Ri + R2 is greater than or equal to 18.
  • the ester comprises between 18 and 40 carbon atoms in total.
  • Preferred monoesters that may be mentioned include isononyl isononanoate, oleyl erucate and/or 2- octyldodecyl neopentanoate;
  • diesters notably comprising between 18 and 60 carbon atoms in total and in particular between 18 and 50 carbon atoms in total. It is notably possible to use diesters of dicarboxylic acids and of monoalcohols, preferably such as diisostearyl malate, or glycol diesters of monocarboxylic acids, such as neopentyl glycol diheptanoate or polyglyceryl-2 diisostearate, notably such as the compound sold under the trade reference Dermol DGDIS by the company Alzo;
  • - triesters notably comprising between 35 and 70 carbon atoms in total, in particular such as triesters of a tricarboxylic acid, such as triisostearyl citrate, or tridecyl trimellitate, or glycol triesters of monocarboxylic acids such as polyglyceryl-2 triisostearate;
  • a tricarboxylic acid such as triisostearyl citrate, or tridecyl trimellitate
  • glycol triesters of monocarboxylic acids such as polyglyceryl-2 triisostearate
  • tetraesters notably with a total carbon number ranging from 35 to 70
  • pentaerythritol or polyglycerol tetraesters of a monocarboxylic acid for instance pentaerythrityl tetrapelargonate, pentaerythrityl tetraisostearate, pentaerythrityl tetraisononanoate, glyceryl tris(2-decyl)tetradecanoate, polyglyceryl-2 tetraisostearate or pentaerythrityl tetrakis(2-decyl)tetradecanoate;
  • esters and polyesters of diol dimer and of monocarboxylic or dicarboxylic acid such as esters of diol dimer and of fatty acid and esters of diol dimer and of dicarboxylic acid dimer, in particular which may be obtained from a dicarboxylic acid dimer derived in particular from the dimerization of an unsaturated fatty acid notably of Cs to C34, notably of C12 to C22, in particular of Ci 6 to C20 and more particularly of Cis, such as esters of dilinoleic diacids and of dilinoleic diol dimers, for instance those sold by the company Nippon Fine Chemical under the trade names Lusplan DD-DA5 ® and DD-DA7 ® ;
  • fatty acid triglycerides which are liquid at room temperature
  • fatty acids containing from 7 to 40 carbon atoms such as heptanoic or octanoic acid triglycerides or jojoba oil
  • saturated triglycerides such as caprylic/capric triglyceride, glyceryl triheptanoate, glyceryl trioctanoate, and Cis-36 acid triglycerides such as those sold under the reference DUB TGI 24 by Stearinerie Dubois, and unsaturated triglycerides such as castor oil, olive oil, ximenia oil and pracaxi oil
  • unsaturated triglycerides such as castor oil, olive oil, ximenia oil and pracaxi oil
  • the other fatty substances that may be present in the oily phase are, for example, fatty acids including from 8 to 30 carbon atoms, for instance stearic acid, lauric acid, palmitic acid and oleic acid; waxes, for instance lanolin wax, beeswax, carnauba wax or candelilla wax, paraffin wax, lignite wax or microcrystalline waxes, ceresin or ozokerite, and synthetic waxes, for instance polyethylene waxes and Fischer-Tropsch waxes; silicone resins such as trifluoromethyl-Ci-C4-alkyl dimethicone and trifluoropropyl dimethicone; and silicone elastomers, for instance the products sold under the name KSG by the company Shin-Etsu, under the name Trefil or BY29 by the company Dow Corning, or under the name Gransil by the company Grant Industries.
  • fatty acids including from 8 to 30 carbon atoms, for instance stearic acid, lauri
  • composition according to the invention may preferably comprise at least one fatty alcohol wax.
  • Such waxes may be chosen from lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, arachidyl alcohol, behenyl alcohol, lignoceryl alcohol, ceryl alcohol, montanyl alcohol, myricyl alcohol, and mixtures thereof.
  • the fatty alcohol wax is cetyl alcohol.
  • a composition according to the invention may preferably comprise at least one butter, in particular a plant butter.
  • the plant butters that are suitable for use in the invention are preferably chosen from the group comprising avocado butter, cocoa butter, shea butter, kokum butter, mango butter, murumuru butter, coconut butter, apricot kernel butter, sal butter and urukum butter, and mixtures thereof, and in particular is shea butter.
  • fatty substances may be chosen in a varied manner by a person skilled in the art in order to prepare a composition having the desired properties, for example in terms of consistency or texture.
  • a composition according to the invention comprises a fatty phase containing at least one fatty substance.
  • a composition according to the invention comprises at least one non-volatile hydrocarbon-based oil, and preferably at least one apolar hydrocarbon-based oil.
  • a composition according to the invention comprises at least two non-volatile hydrocarbon-based oils and one non-volatile ester oil.
  • a composition according to the invention comprises at least one non-volatile hydrocarbon-based oil and at least one ester oil.
  • a composition according to the invention comprises at least one oil chosen from hydrocarbon-based oils of plant origin, and in particular squalane.
  • a composition according to the invention comprises at least one oil chosen from synthetic esters, and in particular isopropyl lauroyl sarcosinate.
  • a composition according to the invention also comprises at least one solid fatty substance, in particular a fatty alcohol wax and/or a butter.
  • the fatty phase content is between 2% and 25% by weight, in particular between 3% and 20% by weight, and preferably between 5% and 15% by weight, relative to the total weight of the composition.
  • the content of solid fatty substance(s) is between 1% and 10% by weight, in particular between 1.5% and 7% by weight and preferably between 2% and 6% by weight relative to the total weight of the composition.
  • the aqueous phase comprises water and optionally a water-soluble solvent.
  • water-soluble solvent denotes a compound that is liquid at room temperature and water-miscible (miscibility with water of greater than 50% by weight at 25°C and atmospheric pressure).
  • the water-soluble solvents that may be used in the composition of the invention may also be volatile.
  • the aqueous phase of a composition according to the invention may comprise at least one C2-C32 polyol.
  • polyol should be understood as meaning any organic molecule including at least two free hydroxyl groups.
  • a polyol in accordance with the present invention is present in liquid form at room temperature.
  • a polyol that is suitable for use in the invention may be a compound of linear, branched or cyclic, saturated or unsaturated alkyl type, bearing on the alkyl chain at least two -OH functions, in particular at least three -OH functions and more particularly at least four -OH functions.
  • the polyols that are suitable for formulating a composition according to the present invention are in particular those notably containing from 2 to 32 carbon atoms and preferably 3 to 16 carbon atoms.
  • the polyol may be chosen, for example, from ethylene glycol, pentaerythritol, trimethylolpropane, propylene glycol, 1,3 -propanediol, butylene glycol, isoprene glycol, pentylene glycol, hexylene glycol, caprylyl glycol, glycerol, polyglycerols, such as glycerol oligomers, for instance diglycerol, polyethylene glycols, and mixtures thereof.
  • said polyol is chosen from ethylene glycol, pentaerythritol, trimethylolpropane, propylene glycol, dipropylene glycol, caprylyl glycol, glycerol, polyglycerols and polyethylene glycols, and mixtures thereof.
  • the composition of the invention comprises at least glycerol.
  • a composition according to the invention comprises from 3% to 22% by weight of glycerol, in particular from 5% to 20% by weight and more preferentially from 8% to 17% by weight of glycerol relative to the total weight of the composition.
  • the aqueous phase is present in a composition according to the invention in a content ranging from 20% to 80% by weight, preferably from 30% to 75% by weight, and more preferentially from 45% to 70% by weight, relative to the total weight of said composition.
  • composition according to the invention may also comprise at least one surfactant.
  • the surfactants may be chosen from nonionic, anionic, cationic and amphoteric surfactants, and mixtures thereof. Reference may be made to Kirk-Othmer's Encyclopedia of Chemical Technology, Volume 22, pages 333-432, 3rd Edition, 1979, Wiley, for the definition of the emulsifying properties and functions of surfactants, in particular pages 347-377 of this reference, for anionic, amphoteric and nonionic surfactants.
  • the composition according to the invention comprises at least one nonionic surfactant.
  • the nonionic surfactants may notably be chosen from alkyl and polyalkyl esters of poly(ethylene oxide), oxyalkylenated alcohols, alkyl and polyalkyl ethers of poly(ethylene oxide), optionally polyoxyethylenated alkyl and polyalkyl esters of sorbitan, optionally polyoxyethylenated alkyl and polyalkyl ethers of sorbitan, alkyl and polyalkyl glycosides or polyglycosides, in particular alkyl and polyalkyl glucosides or polyglucosides, alkyl and polyalkyl esters of sucrose, optionally polyoxyethylenated alkyl and polyalkyl esters of glycerol, and optionally polyoxyethylenated alkyl and polyalkyl ethers of glycerol, gemini surfactants, cetyl alcohol, stearyl alcohol, and mixtures thereof.
  • Oxyalkylenated, in particular oxyethylenated and/or oxypropylenated, alcohols that are preferably used are those that may include from 1 to 150 oxy ethylene and/or oxypropylene units, in particular containing from 20 to 100 oxyethylene units, in particular fatty alcohols, notably of C8-C24 and preferably of Cn-Cis; these fatty alcohols may or may not be ethoxylated, for instance stearyl alcohol ethoxylated with 20 oxyethylene units (CTFA name Steareth-20), for instance Brij ® 78 sold by the company Uniqema, cetearyl alcohol ethoxylated with 30 oxyethylene units (CTFA name Ceteareth-30), and the mixture of C12- Ci5 fatty alcohols including 7 oxyethylene units (CTFA name C 12-15 Pareth-7), for instance the product sold under the name Neodol 25-7 ® by Shell Chemicals; or in particular oxyalkylenated (oxyethy
  • polyoxyethylenated alkyl and polyalkyl esters of sorbitan that are preferably used include those with a number of ethylene oxide (EO) units ranging from 0 to 100.
  • EO ethylene oxide
  • Examples that may be mentioned include sorbitan laurate 4 or 20 EO, in particular polysorbate 20 (or polyoxyethylene (20) sorbitan monolaurate) such as the product Tween ® 20 sold by the company Uniqema, or polysorbate 60, sorbitan palmitate 20 EO, sorbitan isostearate, sorbitan stearate 20 EO, sorbitan oleate 20 EO, or else the Cremophor ® products (RH 40, RH 60, etc.) from BASF.
  • the mixture of sorbitan stearate and of sucrose cocoate, sold under the name Arlacel ® 2121U-FL from Croda may also be mentioned.
  • Alkyl and polyalkyl glucosides or polyglucosides that are preferably used include those containing an alkyl group including from 6 to 30 carbon atoms and preferably from 6 to 18 or even from 8 to 16 carbon atoms, and containing a glucoside group preferably comprising from 1 to 5 and notably 1, 2 or 3 glucoside units.
  • the alkylpolyglucosides may be chosen, for example, from decylglucoside (a 1 ky 1 -Cg/C 1 1 -po 1 y g 1 uco s i dc (1.4)), for instance the product sold under the name Mydol 10 ® by the company Kao Chemicals or the product sold under the name Plantacare 2000 UP ® by the company Henkel and the product sold under the name Oramix NS 10 ® by the company SEPPIC; caprylyl/capryl glucoside, for instance the product sold under the name Plantacare KE 3711 ® by the company Cognis or Oramix CG 110 ® by the company SEPPIC; laurylglucoside, for instance the product sold under the name Plantacare 1200 UP ® by the company Henkel or Plantaren 1200 N ® by the company Henkel; cocoyl glucoside, for instance the product sold under the name Plantacare 818 UP ® by the company He
  • a composition according to the invention comprises at least one surfactant, in particular a nonionic surfactant, and preferably a surfactant chosen from optionally polyoxyethylenated alkyl and polyalkyl ethers of glucose or of alkylglucose.
  • a surfactant chosen from optionally polyoxyethylenated alkyl and polyalkyl ethers of glucose or of alkylglucose.
  • polyoxyethylenated alkyl and polyalkyl ethers of glucose or of alkylglucose that may preferably be mentioned include methylglucose sesquistearate and PEG-20 methylglucose sesquistearate.
  • a composition according to the invention comprises at least one surfactant chosen from optionally polyoxyethylenated alkyl and polyalkyl ethers of glucose or of alkylglucose in an optionally polyoxyethylenated alkyl and polyalkyl ethers of glucose or of alkylglucose/boron nitride mass ratio equal to 1/1.
  • the anionic surfactants may be chosen from alkyl ether sulfates, carboxylates, amino acid derivatives, sulfonates, isethionates, taurates, sulfosuccinates, alkylsulfoacetates, phosphates and alkyl phosphates, polypeptides, metal salts of C10-C30 and notably C16-C25 fatty acids, in particular metal stearates and behenates, and mixtures thereof.
  • Amino acid derivatives that may notably be mentioned include alkali metal salts of amino acids, such as sarcosinates, for instance sodium lauroyl sarcosinate, sodium myristoyl sarcosinate, sodium palmitoyl sarcosinate, alaninates, for instance sodium N-lauroyl-N- methyl amidopropionate, triethanolamine N-lauroyl-N-methylalanine, glutamates, for instance triethanolamine monococoyl glutamate, triethanolamine lauroyl glutamate or sodium lysine dilauramidoglutamide, aspartates, for instance the mixture of triethanolamine N-lauroyl aspartate/triethanolamine N-myristoyl aspartate, glycine derivatives (glycinates), for instance sodium N-cocoyl glycinate, citrates such as the citric monoester of oxyethylenated (9 mol) cocoyl alcohols, or galactur
  • a composition according to the invention comprises at least one anionic surfactant, in particular chosen from amino acid derivatives.
  • Cationic surfactant may be chosen from alkylimidazolidiniums, such as isostearyl ethylimidonium ethosulfate, ammonium salts such as (Ci2-30-alkyl)-tri(Ci-4-alkyl)ammonium halide such as N,N,N-trimethyl-l-docosanaminium chloride (or behentrimonium chloride).
  • alkylimidazolidiniums such as isostearyl ethylimidonium ethosulfate
  • ammonium salts such as (Ci2-30-alkyl)-tri(Ci-4-alkyl)ammonium halide such as N,N,N-trimethyl-l-docosanaminium chloride (or behentrimonium chloride).
  • Amphoteric surfactant may be chosen from alkylimidazolidiniums, such as isostearyl ethylimidonium ethosulfate, am
  • compositions according to the invention may also contain one or more amphoteric surfactants, for instance N-acylamino acids such as N-alkyl aminoacetates and disodium cocoamphodiacetate, and amine oxides such as stearamine oxide, or alternatively silicone surfactants, for instance dimethicone copolyol phosphates such as the product sold under the name Pecosil PS 100 ® by the company Phoenix Chemical.
  • amphoteric surfactants for instance N-acylamino acids such as N-alkyl aminoacetates and disodium cocoamphodiacetate
  • amine oxides such as stearamine oxide
  • silicone surfactants for instance dimethicone copolyol phosphates such as the product sold under the name Pecosil PS 100 ® by the company Phoenix Chemical.
  • the composition may also comprise at least one silicone surfactant.
  • silicone surfactant By way of example, as nonionic surfactants with an HLB of greater than or equal to 8 at 25°C, used alone or as a mixture, mention may be made of dimethicone copolyol or dimethicone copolyol benzoate, and as nonionic surfactants with an HLB of less than 8 at 25°C, used alone or as a mixture, mention may be made of a cyclomethicone/dimethicone copolyol mixture.
  • a composition according to the invention comprises less than 2% by weight of silicone surfactant(s), in particular less than 1% by weight of silicone surfactant(s), preferably less than 0.5% by weight of silicone surfactant(s) and more preferentially is free of silicone surfactant(s).
  • the surfactant(s) may be present in a composition according to the invention in a proportion ranging from 0.5% to 10% by weight and preferably from 3% to 7% by weight, relative to the total weight of the composition.
  • a composition according to the invention comprises less than 5% by weight of surfactant(s) relative to the total weight of the composition.
  • a composition according to the invention also comprises at least one additional cosmetic active agent, in particular at least two additional cosmetic active agents and preferably at least three additional cosmetic active agents, other than ascorbic acid or a derivative thereof.
  • the additional cosmetic active agent may be at least one hydrophilic active agent.
  • hydrophilic active agent means a water-soluble or water-dispersible active agent that is capable of forming hydrogen bonds.
  • hydrophilic active agents examples that may be mentioned include moisturizers, depigmenting agents, desquamating agents, humectants, anti-ageing agents; mattifying agents, cicatrizing agents, antibacterial agents, and mixtures thereof.
  • the additional active agent(s) may notably be chosen from:
  • esters thereof such as tocopherol (vitamin E) and esters thereof (for instance tocopheryl acetate),
  • humectants for instance urea, hydroxyureas, glycerol, polyglycerols, glyceryl glucoside, diglyceryl glucoside, polyglyceryl glucosides and xylityl glucoside, and in particular glycerol;
  • - anti-ageing active agents such as hyaluronic acid compounds, and notably sodium hyaluronate, salicylic acid compounds and in particular 5-n-octanoylsalicylic acid (capryloylsalicylic acid), adenosine, C-P-D-xylopyranoside-2-hydroxypropane and the sodium salt of (3-hydroxy-2-pentylcyclopentyl)acetic acid; and
  • composition according to the invention may comprise at least one additional cosmetic active agent chosen from C-glycoside compounds, in particular of the following general formula:
  • R denotes an unsubstituted linear C 1 -C 4 and notably C 1 -C 2 alkyl radical, in particular methyl;
  • S represents a monosaccharide chosen from D-glucose, D-xylose, N-acetyl-D- glucosamine and L-fucose, and in particular D-xylose;
  • X represents a group chosen from -CO-, -CH(OH)- and -CH(NH2)- and preferentially a -CH(OH)- group; and also the cosmetically acceptable salts thereof, solvates thereof such as hydrates, and optical isomers thereof.
  • C-glycosides that are more particularly suitable for use in the invention, mention may notably be made of the following compounds: C-P-D-xylopyranoside-n-propan-2-one;
  • a C-glycoside of formula illustrated above that is suitable for use in the invention may preferably be C-P-D-xylopyranoside-2- hydroxypropane, the INCI name of which is hydroxypropyl tetrahydropyrantriol, notably sold under the name Mexoryl SBB ® or Mexoryl SCN ® by Chimex.
  • the C-glycoside salts that are suitable for use in the invention may comprise conventional physiologically acceptable salts of these compounds, such as those formed from organic or mineral acids.
  • Examples that may be mentioned include the salts of mineral acids, such as sulfuric acid, hydrochloric acid, hydrobromic acid, hydriodic acid, phosphoric acid and boric acid. Mention may also be made of the salts of organic acids, which may include one or more carboxylic, sulfonic or phosphonic acid groups. They may be linear, branched or cyclic aliphatic acids, or alternatively aromatic acids. These acids may also include one or more heteroatoms chosen from O and N, for example in the form of hydroxyl groups. Mention may notably be made of propionic acid, acetic acid, terephthalic acid, citric acid and tartaric acid.
  • mineral acids such as sulfuric acid, hydrochloric acid, hydrobromic acid, hydriodic acid, phosphoric acid and boric acid.
  • organic acids may include one or more carboxylic, sulfonic or phosphonic acid groups. They may be linear, branched or cyclic aliphatic acids, or alternatively aromatic acids.
  • solvates that are acceptable for the compounds described above comprise conventional solvates such as those formed during the final step of preparation of said compounds due to the presence of solvents. Examples that may be mentioned include solvates due to the presence of water or of linear or branched alcohols, such as ethanol or isopropanol.
  • the composition according to the invention comprises a C- glycoside in an amount of between 0.05% and 14% by weight relative to the total weight of the composition, in particular between 2% and 12% by weight relative to the total weight of the composition and more particularly between 5% and 10% by weight relative to the total weight of the composition.
  • the composition according to the invention comprises a C-glycoside in an amount in active material of between 0.05% and 14% by weight relative to the total weight of the composition, in particular between 2% and 12% by weight relative to the total weight of the composition and more particularly between 5% and 10% by weight relative to the total weight of the composition.
  • composition according to the invention may comprise an additional cosmetic active agent chosen from salicylic acid compounds.
  • the salicylic acid compound present in the composition according to the invention is preferably chosen from salicylic acid and the compounds having the following formula: in which:
  • the radical R denotes a linear, branched or cyclic saturated aliphatic chain containing from 2 to 22 carbon atoms; an unsaturated chain containing from 2 to 22 carbon atoms, containing one or more double bonds that may be conjugated; an aromatic nucleus linked to the carbonyl radical directly or via saturated or unsaturated aliphatic chains containing from 2 to 7 carbon atoms; said groups possibly being substituted with one or more substituents, which may be identical or different, chosen from (a) halogen atoms, (b) the trifluoromethyl group, (c) hydroxyl groups in free form or esterified with an acid containing from 1 to 6 carbon atoms, or (d) a carboxyl function in free form or esterified with a lower alcohol containing from 1 to 6 carbon atoms;
  • - R’ is a hydroxyl group
  • the radical R denotes a linear, branched or cyclic saturated aliphatic chain containing from 3 to 11 carbon atoms; an unsaturated chain containing from 3 to 17 carbon atoms and comprising one or more conjugated or unconjugated double bonds; said hydrocarbon-based chains possibly being substituted with one or more substituents, which may be identical or different, chosen from (a) halogen atoms, (b) the trifluoromethyl group, (c) hydroxyl groups in free form or esterified with an acid containing from 1 to 6 carbon atoms, or (d) a carboxyl function in free form or esterified with a lower alcohol containing from 1 to 6 carbon atoms; and salts thereof obtained by salification with a mineral or organic base.
  • substituents which may be identical or different, chosen from (a) halogen atoms, (b) the trifluoromethyl group, (c) hydroxyl groups in free form or esterified with an acid containing from 1 to 6 carbon atoms,
  • the compounds that are more particularly preferred are those in which the radical R is a C 3 - C 11 alkyl group.
  • salicylic acid compounds that are particularly preferred, mention may be made of 5-n-octanoylsalicylic acid (or capryloylsalicylic acid); 5-n-decanoylsalicylic acid; 5-n- dodecanoylsalicylic acid; 5-n-heptanoylsalicylic acid, and the corresponding salts thereof.
  • the salicylic acid compound is preferably chosen from salicylic acid and 5-n- octanoylsalicylic acid, and more preferentially is 5-n-octanoylsalicylic acid.
  • the salts of the compounds having the formula illustrated above may be obtained by salification with a mineral or organic base.
  • mineral bases include alkali metal or alkaline-earth metal hydroxides, for instance sodium hydroxide or potassium hydroxide, or aqueous ammonia.
  • organic bases mention may be made of amines and alkanolamines. Quaternary salts, for instance those described in patent FR 2 607 498, are particularly advantageous.
  • the composition according to the invention comprises at least one salicylic acid compound in an amount of between 0.05% and 5% by weight relative to the total weight of the composition, in particular between 0.1% and 2% by weight relative to the total weight of the composition and more particularly between 0.2% and 1% by weight relative to the total weight of the composition.
  • composition according to the invention may comprise at least one additional cosmetic active agent chosen from hyaluronic acid or a derivative thereof.
  • hyaluronic acid or a derivative thereof notably covers the hyaluronic acid basic unit having the formula:
  • hyaluronic acid or a derivative thereof also comprises, in the context of the present invention, the linear polymer comprising the polymeric unit described above, according to a sequence with alternating b(1,4) and b(1,3) glycosidic bonds, having a molecular weight (MW) which may range between 380 and 13 000 000 daltons. This molecular weight mainly depends on the source from which the hyaluronic acid is obtained and/or on the preparation methods.
  • hyaluronic acid or a derivative thereof also comprises hyaluronic acid salts and notably alkali metal salts such as the sodium salt and the potassium salt.
  • hyaluronic acid is present in pericellular gels, in the ground substance of connective tissues of vertebrate organs such as the dermis and epithelial tissues and in particular in the epidermis, in the articular synovial fluid, in the vitreous humour, in human umbilical cord and in the crista galli.
  • hyaluronic acid or a derivative thereof comprises all of the hyaluronic acid fractions or subunits having a molecular weight notably within the molecular weight range recalled above.
  • hyaluronic acid fractions not having any inflammatory activity.
  • Hyaluronan fragments an information-rich system , R. Stem et al., European Journal of Cell Biology 58 (2006) 699-715, which reviews the listed biological activities of hyaluronic acid as a function of its molecular weight.
  • the hyaluronic acid fractions that are suitable for the application intended by the present invention have a molecular weight of between 50 000 and 5 000 000, in particular between 100 000 and 5 000 000, notably between 400 000 and 5 000 000 Da. It is a matter in this case of high molecular weight hyaluronic acid.
  • the hyaluronic acid fractions that may also be suitable for the application intended by the present invention have a molecular weight of between 50 000 and 400 000 Da. It is a matter in this case of intermediate molecular weight hyaluronic acid.
  • the hyaluronic acid fractions that may be suitable for the application intended by the present invention have a molecular weight of less than 50 000 Da. It is a matter in this case of low molecular weight hyaluronic acid.
  • hyaluronic acid or a derivative thereof also comprises hyaluronic acid esters, notably those in which all or some of the carboxylic groups of the acid functions are esterified with oxyethylenated alcohols or alkyls, including from 1 to 20 carbon atoms, notably with a degree of substitution on the D-glucuronic acid of hyaluronic acid ranging from 0.5% to 50%.
  • esters have notably been described in D. Campoccia et al. Semisynthetic resorbable materials from hyaluronan esterification, Biomaterials 19 (1998) 2101-2127.
  • Hyaluronic acid may notably be provided by the company Hyactive under the trade name CPN (MW: 10 to 150 kDa), by the company Soliance under the trade name Cristalhyal (MW: l.lxlO 6 ), by the company Bioland under the name Nutra HA (MW: 820 000 Da), by the company Bioland under the name Nutra AF (MW: 69 000 Da), by the company Bioland under the name Oligo HA (MW: 6100 Da) or by the company Vam Farma Cosmetica under the name D Factor (MW: 380 Da).
  • the hyaluronic acid is in the form of spheres.
  • such spheres are sold by the company BASF under the name Hyaluronic Acid Spheres. This is a mixture of hyaluronic acid of different molecular weights, namely of MW 1.5 x 10 6 , 400 000 and 600000 Da.
  • Sodium hyaluronate is preferably used.
  • the hyaluronic acid or a derivative thereof is present in the composition according to the present invention in a content of between 0.01% and 5%, preferably between 0.1% and 3% and more particularly between 0.2 and 1% by weight relative to the total weight of the composition.
  • the additional active agent(s) are chosen from humectants, preferably glycerol; C-glycoside compounds, preferably hydroxypropyl tetrahydropyrantriol; hyaluronic acid compounds, notably sodium hyaluronate; salicylic acid compounds, in particular 5-n-octanoylsalicylic acid (capryloylsalicylic acid); and mixtures thereof.
  • a composition according to the invention comprises at least one humectant, preferably glycerol; a C-glycoside compound, preferably hydroxypropyl tetrahydropyrantriol; and a hyaluronic acid compound, notably sodium hyaluronate.
  • humectant preferably glycerol
  • C-glycoside compound preferably hydroxypropyl tetrahydropyrantriol
  • a hyaluronic acid compound notably sodium hyaluronate.
  • a composition according to the invention comprises at least one humectant, preferably glycerol; a C-glycoside compound, preferably hydroxypropyl tetrahydropyrantriol; a hyaluronic acid compound, notably sodium hyaluronate; and a salicylic acid compound, in particular 5-n-octanoylsalicylic acid (capryloylsalicylic acid).
  • humectant preferably glycerol
  • C-glycoside compound preferably hydroxypropyl tetrahydropyrantriol
  • a hyaluronic acid compound notably sodium hyaluronate
  • salicylic acid compound in particular 5-n-octanoylsalicylic acid (capryloylsalicylic acid).
  • a composition according to the invention may comprise from 5% to 15% by weight and preferably from 8% to 12% by weight of additional active agent(s) relative to the total weight of the composition.
  • a composition according to the invention may also comprise from 3% to 22% by weight, in particular from 5% to 20% by weight and more preferentially from 8% to 17% by weight of glycerol, relative to the total weight of the composition.
  • a composition according to the invention may also include at least one additive chosen from the adjuvants conventionally used in the cosmetic field, such as preserving agents, fragrances, dyestuffs, polar additives, film-forming polymers, pH modifiers (acids or bases), for example citric acid, tartaric acid or oxalic acid, chelating agents, cosmetic active agents, for instance cicatrizing agents, agents for combating greasy skin, and/or anti-pollution agents, and mixtures thereof.
  • the adjuvants conventionally used in the cosmetic field, such as preserving agents, fragrances, dyestuffs, polar additives, film-forming polymers, pH modifiers (acids or bases), for example citric acid, tartaric acid or oxalic acid, chelating agents, cosmetic active agents, for instance cicatrizing agents, agents for combating greasy skin, and/or anti-pollution agents, and mixtures thereof.
  • composition according to the invention is preferably free of compounds that may be harmful to man and/or the environment, i.e. it comprises less than 0.01% by weight, or is even free of compounds that may be harmful to man and/or the environment.
  • composition according to the invention is in particular free of silicone compound and/or of ethylenediaminetetraacetic acid (EDTA), and is preferably free of silicone compound and of ethylenediaminetetraacetic acid.
  • EDTA ethylenediaminetetraacetic acid
  • a composition according to the invention comprises at least one chelating agent, and preferably Trisodium Ethylenediamine Disuccinate. COMPOSITION
  • composition according to the invention may be cosmetic and/or dermatological, and is preferably cosmetic.
  • a composition according to the invention is generally suitable for topical application to the skin and thus generally comprises a physiologically acceptable medium, i.e. a medium that is compatible with the skin.
  • a cosmetically acceptable medium i.e. a medium which has a pleasant colour, odour and feel and which does not cause any unacceptable discomfort, i.e. stinging, tautness or redness, liable to discourage the user from applying this composition.
  • a cosmetic composition according to the invention may be in any presentation form conventionally used in cosmetics according to the intended applications, in particular for topical application.
  • a composition may notably be in the form of an aqueous or oily solution or of a dispersion of the lotion or serum type, of emulsions of liquid or semi-liquid consistency of the milk type, obtained by dispersing a fatty phase in an aqueous phase (oil-in-water), or conversely (water- in-oil), or of suspensions or emulsions of soft consistency, of the aqueous or anhydrous gel or cream type, or else of microcapsules or microparticles, or of vesicular dispersions of ionic and/or nonionic type.
  • O/W oil-in-water
  • a composition according to the invention is in the form of an oil-in-water emulsified gel.
  • a composition according to the invention is in the form of an oil-in-water emulsion.
  • a composition according to the invention has a pH ranging from 3 to 8.
  • the pH of the composition ranges from 4 to 7, in particular from 4 to 6.5, or even from 4 to 6.
  • a composition according to the invention contains at least one pH modifier, for example sodium hydroxide, potassium hydroxide and/or sodium citrate.
  • at least one pH modifier for example sodium hydroxide, potassium hydroxide and/or sodium citrate.
  • composition according to the invention may be prepared according to the techniques that are well known to those skilled in the art. INTENDED USE OF THE COMPOSITION
  • a composition according to the invention may be in the form of a cosmetic composition for caring for and/or making up keratin materials, preferably a cosmetic composition for caring for keratin materials, in particular of the body or of the face, preferably of the face.
  • compositions may constitute cleansing, protective, treating or care creams for the face, the hands or the body, for example day creams, night creams, makeup creams, foundation creams, antisun creams, fluid foundations, protective or care body milks, antisun milks, lotions, or blister treatment products.
  • composition according to the invention may be used as a care product and/or antisun product for the face and/or body, with a liquid to semi-liquid consistency, such as oils, milks, lotions, more or less smooth creams, or gel-creams.
  • a composition according to the invention is in the form of a composition for caring for keratin materials, in particular the skin of the body or the face, preferably of the face.
  • composition of the invention may be in the form of an anti-ageing care composition for the skin of the body or the face, in particular the face.
  • a composition of the invention may be in the form of a composition for making up keratin materials, in particular of the body or of the face, preferably of the face.
  • a composition of the invention may be in the form of a makeup base composition for making up.
  • a composition of the invention may in particular be in the form of a foundation.
  • a composition of the invention may be in the form of a lip product, notably a lipstick.
  • composition of the invention may be in the form of a product for the eyebrows, in particular an eyebrow pencil.
  • compositions are notably prepared according to the general knowledge of a person skilled in the art.
  • the invention also relates to the use of a composition according to the invention for caring for and/or making up keratin materials, preferably for caring for keratin materials, in particular the skin of the body and/or of the face.
  • the invention also relates to a cosmetic process for making up and/or caring for keratin materials, in particular the skin and/or the lips, comprising at least one step of applying a composition as defined previously to said keratin materials.
  • the invention also relates to a cosmetic process for caring for keratin materials, in particular the skin and/or the lips, comprising at least one step of applying a composition as defined above to said keratin materials.
  • composition according to the invention may be used for combating the signs of skin ageing.
  • the present application also relates to the use of a composition according to the invention for combating the signs of skin ageing.
  • composition may be applied to the skin by hand or using an applicator.
  • each of the compositions is applied to the skin so as to form a deposit of uniform thickness.
  • the tacky nature is evaluated by the individual during drying of the formulation after 2 minutes at room temperature (25°C).
  • compositions for the face in the form of oil-in-water emulsions, 1-A, 1-B and 2 according to the invention, are prepared in the weight proportions as detailed in the table below. The values are expressed as weight percentages relative to the total weight of the composition.
  • compositions are prepared with a Minilab from the company Olsa, equipped with a planetary mixer and an emulsifying mixer.
  • the compounds of phase A are weighed out in the main tank, and heated to 55°C. When the temperature is reached, the mixture is homogenized for 10 minutes (emulsifying mixer at 1000 rpm and planetary mixer at 30 rpm). A clear yellow liquid phase is obtained.
  • phase B The compounds of phase B are introduced, and the mixture is maintained at 55°C and homogenized until the phase is homogeneous and free of grains (emulsifying mixer at 4000 rpm and planetary mixer at 50 rpm for 15 to 20 minutes).
  • phase C is prepared in a beaker, heated to 70-75°C with stirring using a magnetic bar until a clear, colourless phase is obtained. The mixture is then cooled to 55°C, and then introduced into the main tank (emulsifying mixer at 4000 rpm and planetary mixer at 50 rpm for 10 minutes).
  • phase D After homogenization, heating is stopped and the mixture is cooled to between 15 and 20°C.
  • the compounds of phase D are first homogenized using a blender/deflocculator (emulsifying mixer at 4000 rpm and planetary mixer at 50 rpm for 10 minutes).
  • phase E emulsifying mixer at 4000 rpm and planetary mixer at 50 rpm for 10 minutes.
  • compositions 1-A, 1-B and 2 according to the invention are stable, even after 2 months of storage, and have good sensory qualities.
  • the anti-ageing care compositions for the face in the form of oil-in-water emulsions, 3 according to the invention and 4 to 8 outside the invention, are prepared in the weight proportions as detailed in the table below, as indicated in Example 1. The values are expressed as weight percentages relative to the total weight of the composition.
  • composition 3 according to the invention is stable and has good sensory qualities.
  • Composition 4 outside the invention is stable, but very tacky.
  • Compositions 5, 6, 7 and 8 outside the invention are unstable.
  • composition 7 shows a substantial loss of viscosity after storage for 2 months at 45°C.
  • the anti-ageing care compositions for the face in the form of oil-in-water emulsions, 9 and 10 according to the invention and 11 to 15 outside the invention, are prepared in the weight proportions as detailed in the table below, as indicated in Example 1. The values are expressed as weight percentages relative to the total weight of the composition.
  • Compositions 9 and 10 according to the invention are stable and have good sensory qualities. Compositions 11 to 15 outside the invention are unstable.
  • the anti-ageing care composition for the face in the form of an oil-in-water emulsion, 16 outside the invention, is prepared in the weight proportions as detailed in the table below, as indicated in Example 1. The values are expressed as weight percentages relative to the total weight of the composition. Results
  • Composition 16 outside the invention is unstable.
  • Example 5
  • the anti-ageing care compositions for the face in the form of oil-in-water emulsions, 17 to 20 outside the invention, are prepared in the weight proportions as detailed in the table below, as indicated in Example 1. The values are expressed as weight percentages relative to the total weight of the composition.
  • compositions 17 to 20 outside the invention are unstable.
  • the anti-ageing care composition for the face in the form of an oil-in-water emulsion, 21 outside the invention, is prepared in the weight proportions as detailed in the table below, as indicated in Example 1. The values are expressed as weight percentages relative to the total weight of the composition.
  • Composition 21 outside the invention is unstable.
  • the anti-ageing care composition for the face in the form of an oil-in-water emulsion, 22 according to the invention, is prepared in the weight proportions as detailed in the table below, as indicated in Example 1. The values are expressed as weight percentages relative to the total weight of the composition.
  • Composition 22 according to the invention is stable and has good sensory qualities.
  • the anti-ageing care composition for the face in the form of an oil-in-water emulsion, 23 according to the invention, is prepared in the weight proportions as detailed in the table below, as indicated in Example 1. The values are expressed as weight percentages relative to the total weight of the composition.
  • Composition 23 according to the invention is stable and has good sensory qualities.
  • Example 9
  • anti-ageing care compositions for the face in the form of oil-in-water emulsions, 24 to 26 outside the invention, are prepared in the weight proportions as detailed in the table below, as indicated in Example 1. The values are expressed as weight percentages relative to the total weight of the composition.
  • Compositions 24 to 26 outside the invention are unstable.
  • composition 24 shows substantial yellowing after storage for 2 months at 45°C.
  • the residual film is obtained with compositions 25 and 26 show substantial pilling.

Abstract

The present invention relates to a composition, notably a cosmetic composition, in particular for making up and/or caring for keratin materials, comprising at least one gelled aqueous phase, a fatty phase, at least 5% by weight of ascorbic acid and/or a derivative thereof, and boron nitride.

Description

Description
Title: COMPOSITION COMPRISING ASCORBIC ACID
Technical field
The present invention relates to the field of caring for and/or making up keratin materials, in particular to the anti-ageing care of keratin materials, notably of the skin.
For the purposes of the present invention, the term “ keratin materials ” notably denotes the skin, the lips and/or the eyelashes, in particular the skin and/or the lips, and preferably the skin of the body and/or the face, and more preferentially of the face.
Skin ageing results from the effects of intrinsic and extrinsic factors on the skin. During the ageing process, a detrimental change in the structure and functions of the skin appears. The main clinical signs due to these modifications of the skin metabolism are the appearance of wrinkles and fine lines, the cause of which is a slackening and loss of the elasticity of the tissues.
Moreover, intrinsic ageing, which brings about the changes in the skin, notably causes slowing-down of the renewal of the skin cells, which is reflected essentially by the appearance of detrimental clinical changes, such as a reduction in the subcutaneous adipose tissue and the appearance of small wrinkles or fine lines, and by histopathological changes, such as an increase in the number and thickness of elastic fibres, a loss of vertical fibres from the membrane of the elastic tissue, and the presence of large irregular fibroblasts in the cells of this elastic tissue.
Prior art
It is known practice to introduce active agents into cosmetic and/or dermatological compositions in order to combat the signs of ageing.
For example, it has been sought for a long time to formulate ascorbic acid (or vitamin C) in the cosmetic and dermatological fields, in various presentation forms, due to its numerous beneficial properties, notably in large amount, for example greater than 5% by weight.
In particular, ascorbic acid stimulates the synthesis of connective tissue and notably of collagen, reinforces skin tissue defences against external attacking factors such as ultraviolet radiation and pollution, compensates for vitamin E deficiency in the skin, deep pigments the skin and has a free-radical- scavenging function. On account of its properties, ascorbic acid is efficient for combating the signs of ageing of the skin, for example for improving the radiance of the complexion and fading out wrinkles and/or fine lines in the skin. Unfortunately, these active agents are often unstable in oxidizing medium and thus very sensitive to certain environmental parameters, for instance light, oxygen and water. Rapid degradation of these active agents thus follows when they are in contact notably with one of these parameters, which runs counter to the desired efficacy. Furthermore, it remains very difficult to use them in large amounts, notably greater than 5% by weight.
In order to overcome these problems, it has been envisaged to stabilize active agents, and notably vitamin C, via various means.
Among these means, mention may be made of that consisting in creating a chemical association of ascorbic acid with, for example, gluconic acid or urocanic acid.
Another means consisted in stabilizing vitamin C via physical methods by incorporating it, for example, into cyclodextrins, zeolites or liposomes.
It has also been proposed to make vitamin C derivatives, more particularly in the form of phosphodiesters with vitamin E, for example.
Another stabilization means that has been suggested consists in chemically functionalizing the enediol group of vitamin C by formation of a phosphate or sulfate function or by formation of an ether or ester function.
Moreover, to reduce or retard the degradation of ascorbic acid in solution, US 5 140 043 recommends stabilizing it by introducing it into aqueous -alcoholic solutions, formed from at least 80% water and having a pH below 3.5. On account of the high acidity of these solutions, their use in the cosmetic field is sparingly possible. The reason for this is that repeated application of these solutions may disrupt the skin equilibrium and in particular irritate or even bum the skin.
The article by B.R. Hajratwala entitled Stability of ascorbic acid , published in the Revue Sciences Pharmaceutiques on 15 March 1985, is moreover known. In this article, it is notably taught to stabilize ascorbic acid in acidic aqueous solution by adding a surfactant which is an ethoxylated sorbitan ester. In particular, the author reported therein that at pH 3.4 and at 25°C, the addition of this agent reduced the rate of oxidation, and thus of degradation, of ascorbic acid in solution. In addition, said document teaches the use of a chelating agent such as ethylenediaminetetraacetic acid (EDTA), and conditioning it under nitrogen and protected from light, to improve the stability of ascorbic acid in aqueous solution. Such an acidic aqueous solution, applied to the skin, has the same drawbacks as those described above for acidic aqueous -alcoholic solutions. Furthermore, the stabilization obtained is still insufficient.
Other methods for stabilizing ascorbic acid have been envisaged, notably by coating (FR 1 600 826) or by granulating ascorbic acid (JP A 53-127819). However, these techniques are, firstly, expensive and, secondly, may impair the ascorbic acid, for example during heating, and/or lead to compositions that are sparingly cosmetic, as is the case for granules.
In addition, US 5 853 741 describes the stabilization of ascorbic acid with non-emulsifying silicone elastomers known under the trade reference “Gransil”. The drawback of these products is that they give an oily, greasy effect, without a freshness effect, which makes it difficult or impossible for them to be used in a hot and humid environment and/or by users with greasy skin. Furthermore, these polymers are entirely water-repellent and difficult to incorporate into an aqueous phase. As a result of their high incompatibility with water and in particular with sweat, said sweat is not absorbed by these polymers and even has a tendency to "pearl" on the surface of the skin, when it perspires. In addition, the current consumer demands are tending towards favouring the absence of silicone compounds in cosmetic compositions.
Finally, in addition to the abovementioned drawbacks, none of the known compositions makes it possible to stabilize a large amount of vitamin C, optionally in combination with other active agents.
Disclosure of the invention
The need thus remains for a composition that may notably be used in the cosmetic and/or dermatological fields, containing stabilized ascorbic acid and/or a derivative thereof in large amounts, notably greater than 5% by weight, which does not cause any skin irritation after application, and which is stable, notably Theologically stable.
The need also remains for a composition that may notably be used in the cosmetic field, in which one or more hydrophilic active agents, and notably vitamin C, are stable, notably from a rheological viewpoint, and which has good sensory qualities for its use in cosmetics, and which is notably light, non-tacky and non-pilling.
In addition, the need remains to efficiently stabilize several different active agents in a cosmetic composition, and notably in a composition of oil-in-water type. Finally, the need also remains for cosmetic compositions that are compatible with the current consumer demands, notably regarding the environment.
The invention is precisely directed towards meeting these needs.
Summary of the invention
Thus, according to a first of its aspects, the present invention relates to a composition, notably a cosmetic composition, in particular for making up and/or caring for keratin materials, comprising:
- at least one aqueous phase gelled with:
(i) at least 1.8% by weight of an anionic terpolymer of 2-methyl-2-[(l-oxo-2- propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate, relative to the total weight of the composition, or
(ii) at least 1.8% by weight of a mixture of an anionic terpolymer of 2-methyl-2-[(l-oxo-2- propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate, and of a 2-acrylamido-2-methylpropanesulfonic acid polymer, i.e. a 2-acrylamido-2-methylpropanesulfonic acid homopolymer, relative to the total weight of the composition;
- at least one fatty phase;
- at least 5% by weight of ascorbic acid and/or a derivative thereof, relative to the total weight of the composition; and
- at least boron nitride.
The inventors have found, surprisingly, that the compositions according to the invention can efficiently stabilize ascorbic acid and derivatives thereof in large amounts, optionally in combination with other active agents.
Specifically, as emerges from the examples featured hereinbelow, the compositions according to the invention are stable, notably from a rheological viewpoint.
In addition, it has been observed that the compositions in accordance with the invention are stable while at the same time having organoleptic properties which are pleasant for the user; in particular, they have a light finish, are not tacky and do not pill.
They also advantageously make it possible to use a large number of active agents. Advantageously, a composition according to the invention does not comprise any controversial ingredients, and in particular does not comprise any ethylenediaminetetraacetic acid (EDTA) or a derivative thereof, or any silicone compounds.
Thus, the compositions in accordance with the invention meet the environmental requirements and consumer demands.
A composition according to the invention is used in particular for caring for and/or making up keratin materials, and preferably for caring for keratin materials.
Thus, according to another of its aspects, the invention also relates to a cosmetic process for making up and/or caring for, preferably caring for, keratin materials, in particular the skin and/or the lips, comprising at least one step of applying a composition according to the invention to said keratin materials.
Other characteristics, variants and advantages of the compositions according to the invention will emerge more clearly on reading the description and the examples that follow.
Detailed description
ASCORBIC ACID AND DERIVATIVES
As indicated previously, a composition according to the invention comprises at least 5% by weight of ascorbic acid, also known as vitamin C, and/or of a derivative thereof, relative to the total weight of the composition.
In particular, a composition according to the invention comprises from 5% to 15% by weight of ascorbic acid, also known as vitamin C, and/or of a derivative thereof, relative to the total weight of the composition.
Preferably, a composition according to the invention comprises from 5% to 12% by weight of ascorbic acid, also known as vitamin C, and/or of a derivative thereof, relative to the total weight of the composition.
In particular, a composition according to the invention comprises from 5% to 15% by weight of ascorbic acid relative to the total weight of the composition.
More preferentially, a composition according to the invention comprises from 5% to 12% by weight of ascorbic acid relative to the total weight of the composition. The ascorbic acid may be in D or L form, advantageously in L form, and analogues thereof chosen from salts thereof, preferably sodium ascorbate, magnesium or sodium ascorbyl phosphate, and glycosyl ascorbic acid.
Ascorbic acid derivatives that may be mentioned in particular include sugar esters of ascorbic acid and metal salts of phosphorylated ascorbic acid.
The sugar esters of ascorbic acid that may be used in the invention are notably glycosyl, mannosyl, fmctosyl, fucosyl, galactosyl, N-acetylglucos amine and N-acetylmuramic derivatives of ascorbic acid and mixtures thereof and more especially ascorbyl-2 glucoside or 2-O-a-D-glucopyranosyl L-ascorbic acid or 6-0-P-D-galactopyranosyl L-ascorbic acid. The latter compounds and processes for preparing them are described in particular in EP 487 404, EP 425 066 and J05213736.
For its part, the metal salt of phosphorylated ascorbic acid is chosen from alkali metal ascorbyl phosphates, alkaline-earth metal ascorbyl phosphates and transition metal ascorbyl phosphates.
The ascorbic acid derivatives that are suitable for use according to the present invention may be chosen from the 5,6-di-O-dimethylsilyl ascorbate sold under the reference PRO-AA by the company Exsymol, the potassium salt of dl-a-tocopheryl-dl-ascorbyl phosphate sold under the reference Sepivital EPC by the company Senju Pharmaceutical, magnesium ascorbyl phosphate, sodium ascorbyl phosphate sold under the reference Stay-C 50 by the company Roche and ascorbyl glucoside sold by the company Hayashibara.
Magnesium ascorbyl phosphate is preferably used.
A composition according to the invention may in particular comprise from 5% to 15% by weight of ascorbic acid and/or a derivative thereof, in particular from 5.5% to 12% by weight, preferably from 6% to 11% by weight and more preferentially from 6.5% to 10% by weight relative to the total weight of the composition.
A composition according to the invention may in particular comprise from 5% to 12% by weight of ascorbic acid and/or a derivative thereof, in particular from 5.5% to 10% by weight, preferably from 6% to 9% by weight and more preferentially from 6.5% to 7.5% by weight relative to the total weight of the composition.
AQUEOUS PHASE-GELLING AGENTS As indicated previously, the composition according to the invention comprises at least one aqueous phase gelled with:
(i) at least 1.8% by weight of an anionic terpolymer of 2-methyl-2-[(l-oxo-2- propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate, relative to the total weight of the composition, or
(ii) at least 1.8% by weight of a mixture of an anionic terpolymer of 2-methyl-2-[(l-oxo-2- propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate, and of a 2-acrylamido-2-methylpropanesulfonic acid polymer, i.e. a 2-acrylamido-2-methylpropanesulfonic acid homopolymer, relative to the total weight of the composition.
According to a first variant, a composition according to the invention comprises an aqueous phase gelled with at least 1.8% by weight of an anionic terpolymer of 2-methyl-2-[(l-oxo- 2-propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate, in particular at least 1.9% by weight of an anionic terpolymer of 2-methyl-2-[(l-oxo-2-propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate, and preferably at least 2% by weight of an anionic terpolymer of 2-methyl-2-[(l-oxo-2-propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate, relative to the total weight of the composition.
Thus, preferably, a composition according to the invention may comprise from 1.8% by weight to 4% by weight, in particular from 1.9% to 3% by weight and more preferentially from 2% to 2.5% by weight of an anionic terpolymer of 2-methyl-2-[(l-oxo-2- propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate, relative to the total weight of the composition.
According to a second variant, a composition according to the invention comprises an aqueous phase gelled with at least 1.8% by weight of a mixture of an anionic terpolymer of 2-methyl-2-[(l-oxo-2-propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate and of a 2-acrylamido-2- methylpropanesulfonic acid polymer, i.e. a 2-acrylamido-2-methylpropanesulfonic acid homopolymer, in particular at least 1.9% by weight of a mixture of an anionic terpolymer of 2-methyl-2-[(l-oxo-2-propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate and of a 2-acrylamido-2- methylpropanesulfonic acid polymer, i.e. a 2-acrylamido-2-methylpropanesulfonic acid homopolymer, and preferably at least 2% by weight of a mixture of an anionic terpolymer of 2-methyl-2-[(l-oxo-2-propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate and of a 2-acrylamido-2- methylpropanesulfonic acid polymer, i.e. a 2-acrylamido-2-methylpropanesulfonic acid homopolymer, relative to the total weight of the composition.
In particular, a composition according to the invention may comprise from 0.8% by weight to 2% by weight, in particular from 0.9% to 1.5% by weight and more preferentially from 1% to 1.2% by weight of an anionic terpolymer of 2-methyl-2-[(l-oxo-2-propenyl)amino]- 1-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N- dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate, relative to the total weight of the composition, and from 0.8% to 2% by weight, in particular from 0.9% to 1.5% by weight and more preferentially from 1% to 1.2% by weight of a 2-acrylamido-2-methylpropanesulfonic acid polymer, i.e. a 2- acrylamido-2-methylpropanesulfonic acid homopolymer.
According to a preferred embodiment, the anionic terpolymer of 2-methyl-2-[(l-oxo-2- propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate and the 2-acrylamido-2-methylpropanesulfonic acid polymer, i.e. a 2-acrylamido-2-methylpropanesulfonic acid homopolymer, are present in the composition in a mass ratio equal to 1/1.
As anionic terpolymer of 2-methyl-2-[(l-oxo-2-propenyl)amino]-l-propanesulfonic acid partially or totally salified in the form of ammonium salt, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate, crosslinked with trimethylolpropane triacrylate, of INCI name Polyacrylate Crosspolymer-6, mention may be made of the product sold under the trade name Sepimax Zen® by the company SEPPIC.
The 2-acrylamido-2-methylpropanesulfonic acid polymer, i.e. the 2-acrylamido-2- methylpropanesulfonic acid homopolymer, that may be used in the composition according to the invention comprises 2-acrylamido-2-methylpropanesulfonic acid units of formula (I) below:
Figure imgf000010_0001
in which X+ is a proton, an alkali metal cation, an alkaline-earth metal cation or the ammonium ion.
As 2-acrylamido-2-methylpropanesulfonic acid polymer, i.e. as 2-acrylamido-2- methylpropanesulfonic acid homopolymer, that is suitable for use in the invention, mention may be made, for example, of crosslinked or non-crosslinked polymers of sodium acrylamido-2-methylpropanesulfonate, such as that used in the commercial product Simulgel 800 (CTFA name: Sodium Polyacryloyldimethyl Taurate), crosslinked ammonium acrylamido-2-methylpropanesulfonate polymers (INCI name: Ammonium
Polyacryldimethyltauramide) such as those described in patent EP 0 815 928 B1 and such as the product sold under the trade name Hostacerin AMPS® by the company Clariant. Preferably, as 2-acrylamido-2-methylpropanesulfonic acid polymer, i.e. as 2-acrylamido-2- methylpropanesulfonic acid homopolymer, that may be used in the composition according to the invention, mention may be made in particular of crosslinked ammonium acrylamido- 2-methylpropanesulfonate polymers (INCI name: Ammonium Polyacryldimethyltauramide) such as the product sold under the trade name Hostacerin AMPS® by the company Clariant. Preferably, a composition according to the invention is free of natural or naturally sourced hydrophilic gelling agent, and in particular free of non-starchy polysaccharides.
Preferably, a composition according to the invention is free of hydrophilic gelling agent of the sodium acrylamido-2-methylpropanesulfonate/hydroxyethyl acrylate copolymer type. Preferably, a composition according to the invention is free of hydrophilic gelling agent of the crosslinked acrylamide/sodium acrylamido-2-methylpropanesulfonate copolymer type.
BORON NITRIDE
As indicated previously, a composition according to the invention comprises at least boron nitride.
The boron nitride preferably has a number-average primary particle size of between 1 and 50 pm, better still between 1 and 30 pm, more preferentially between 1 and 25 pm and even more preferentially between 1 and 10 pm.
For the purposes of the present invention, the term "primary particle size" means the maximum dimension that it is possible to measure between two diametrically opposite points of an individual particle. The size may be determined, for example, by transmission electron microscopy or by measuring the specific surface area via the BET method or with a laser particle size analyser.
As commercial boron nitrides that may be used in a composition according to the invention, mention may notably be made of the boron nitrides sold by Saint Gobain Ceramics, notably under the names PUHP3002, PUHP3008 or PUHP1030L, or Softouch BN CC6058 Powder from Momentive Performance Materials.
The boron nitride is preferably present in a composition according to the invention in an amount of between 0.5% and 6% by weight, better still in an amount of between 0.8% and 3% by weight, and even more preferentially in an amount of between 0.9% and 1.5% by weight, relative to the total weight of the composition.
FATTY PHASE
A composition according to the invention comprises at least one fatty phase.
The fatty phase preferably contains at least one oil, notably a cosmetic oil. It may also contain other fatty substances.
The term “oil” means a water-immiscible non-aqueous compound that is liquid at room temperature (20°C) and at atmospheric pressure (760 mmHg).
A fatty phase that is suitable for preparing the compositions, notably cosmetic compositions, according to the invention may comprise hydrocarbon-based oils, silicone oils, fluoro oils or non-fluoro oils, or mixtures thereof. Preferably, the fatty phase of a composition according to the invention comprises less than 2% by weight of silicone oil(s), in particular less than 1% by weight of silicone oil(s), preferably less than 0.5% by weight of silicone oil(s) and more preferentially is free of silicone oil(s).
The oils may be volatile or non-volatile.
They may be of animal, plant, mineral or synthetic origin.
The term “ non-volatile ” refers to an oil whose vapour pressure at room temperature and atmospheric pressure is non-zero and is less than 103 mmHg (0.13 Pa).
For the purposes of the present invention, the term “ silicone oil” means an oil comprising at least one silicon atom, and notably at least one Si-0 group.
The term "fluoro oil " means an oil comprising at least one fluorine atom.
The term " hydrocarbon-based oil " means an oil mainly containing hydrogen and carbon atoms.
The oils may optionally comprise oxygen, nitrogen, sulfur and/or phosphorus atoms, for example in the form of hydroxyl or acid radicals.
For the purposes of the invention, the term "volatile oil" means any oil that is capable of evaporating on contact with the skin in less than one hour, at room temperature and atmospheric pressure. The volatile oil is a volatile cosmetic compound, which is liquid at room temperature, notably having a non-zero vapour pressure, at room temperature and atmospheric pressure, notably having a vapour pressure ranging from 0.13 Pa to 40000 Pa (103 to 300 mmHg), in particular ranging from 1.3 Pa to 13 000 Pa (0.01 to 100 mmHg) and more particularly ranging from 1.3 Pa to 1300 Pa (0.01 to 10 mmHg).
Volatile oils
The volatile oils may be hydrocarbon-based oils or silicone oils.
Among the volatile hydrocarbon-based oils containing from 8 to 16 carbon atoms, mention may be made notably of branched Cs-Ci6 alkanes, for instance Cs-Ci6 isoalkanes (also known as isoparaffins), isododecane, isodecane, isohexadecane and, for example, the oils sold under the trade names Isopar or Permethyl, branched Cs-Ci6 esters, for instance isohexyl neopentanoate, and mixtures thereof. In particular, the volatile hydrocarbon-based oil is chosen from volatile hydrocarbon-based oils containing from 8 to 16 carbon atoms and mixtures thereof. Mention may also be made of volatile linear alkanes comprising from 8 to 16 carbon atoms, in particular from 10 to 15 carbon atoms and more particularly from 11 to 13 carbon atoms, for instance n-dodecane (C12) and n-tetradecane (C14) sold by Sasol under the respective references Parafol 12-97 and Parafol 14-97, and also mixtures thereof, the undecane- tridecane mixture, the mixtures of n-undecane (Cn) and of n-tridecane (C13) obtained in Examples 1 and 2 of patent application WO 2008/155 059 from the company Cognis, and mixtures thereof.
Volatile silicone oils that may be mentioned include linear volatile silicone oils such as hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, tetradecamethylhexasiloxane, hexadecamethylheptasiloxane and dodecamethylpentasiloxane.
Volatile cyclic silicone oils that may be mentioned include hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, cyclohexasiloxane and dodecamethylcyclohexasiloxane, in particular cyclohexasiloxane.
Non-volatile oils
The non-volatile oils may notably be chosen from non-volatile hydrocarbon-based, fluoro and/or silicone oils.
Non-volatile hydrocarbon-based oils that may notably be mentioned include:
- hydrocarbon-based oils of animal origin,
- hydrocarbon-based oils of plant origin, such as squalane, synthetic ethers containing from 10 to 40 carbon atoms, such as dicapryl ether,
- synthetic esters, for instance the oils of formula R1COOR2, in which Ri represents a linear or branched fatty acid residue including from 1 to 40 carbon atoms and R2 represents a hydrocarbon-based chain that is notably branched, containing from 1 to 40 carbon atoms, on condition that Ri + R2 is greater than or equal to 10. The esters may notably be chosen from esters of alcohol and of fatty acid, for instance cetostearyl octanoate, esters of isopropyl alcohol, such as isopropyl myristate, isopropyl palmitate, ethyl palmitate, 2-ethylhexyl palmitate, isopropyl stearate, octyl stearate, hydroxylated esters, for instance isostearyl lactate, octyl hydroxystearate, alcohol or polyalcohol ricinoleates, hexyl laurate, neopentanoic acid esters, for instance isodecyl neopentanoate, isotridecyl neopentanoate, isononanoic acid esters, for instance isononyl isononanoate, isotridecyl isononanoate and octyl isononanoate, oleyl erucate, isopropyl lauroyl sarcosinate, diisopropyl sebacate, isocetyl stearate, isodecyl neopentanoate or isostearyl behenate; polyol esters and pentaerythritol esters, for instance dipentaerythrityl tetrahydroxystearate/tetraisostearate,
- fatty alcohols that are liquid at room temperature, with a branched and/or unsaturated carbon-based chain containing from 12 to 26 carbon atoms, for instance 2-octyldodecanol, isostearyl alcohol and oleyl alcohol,
- C12-C22 higher fatty acids, such as oleic acid, linoleic acid, linolenic acid, and mixtures thereof,
- carbonates, such as dicaprylyl carbonate,
- non-phenyl silicone oils, for instance caprylyl methicone, and
- phenyl silicone oils, for instance phenyl trimethicones, phenyl dimethicones, phenyltrimethylsiloxydiphenylsiloxanes, diphenyl dimethicones, diphenylmethyldiphenyltrisiloxanes and 2-phenylethyl trimethylsiloxysilicates, dimethicones or phenyl trimethicone with a viscosity of less than or equal to 100 cSt, trimethylpentaphenyltrisiloxane, and mixtures thereof; and also mixtures of these various oils.
In particular, the composition may also comprise at least one non-volatile oil, chosen in particular from non-volatile apolar hydrocarbon-based oils.
For the purposes of the present invention, the term “ apolar oil” means an oil whose solubility parameter at 25°C, 6a, is equal to 0 (J/cm3)½.
The definition and calculation of the solubility parameters in the Hansen three-dimensional solubility space are described in the article by C.M. Hansen: “The three dimensional solubility parameters ” J. Paint Technol. 39, 105 (1967).
According to this Hansen space:
- 6D characterizes the London dispersion forces derived from the formation of dipoles induced during molecular impacts;
- dr characterizes the Debye interaction forces between permanent dipoles and also the Keesom interaction forces between induced dipoles and permanent dipoles;
- 6h characterizes the specific interaction forces (such as hydrogen bonding, acid/base, donor/acceptor, etc.); and
- 5a is determined by the equation 6a = (dr2 + d1i2)½.
The parameters dr, di,. do and da are expressed in (J/cm3)½. The non-volatile apolar hydrocarbon-based oil is free of oxygen atoms.
Preferably, the non-volatile apolar hydrocarbon-based oil may be chosen from linear or branched hydrocarbons of mineral or synthetic origin. In particular, it may be chosen from:
- liquid paraffin or derivatives thereof,
- liquid petroleum jelly,
- polybutylenes, for example Indopol H-100 (molar mass or Mw = 965 g/mol), Indopol H- 300 (Mw = 1340 g/mol) and Indopol H-1500 (Mw = 2160 g/mol) sold or manufactured by the company Amoco,
- polyisobutenes and hydrogenated polyisobutenes, for example Parleam® sold by the company Nippon Oil Fats, Panalane FI-300 E sold or manufactured by the company Amoco (Mw = 1340 g/mol), Viseal 20000 sold or manufactured by the company Synteal (Mw = 6000 g/mol) and Rewopal PIB 1000 sold or manufactured by the company Witco (Mw = 1000 g/mol),
- decene/butene copolymers, polybutene/polyisobutene copolymers, for example Indopol L- 14,
- polydecenes and hydrogenated polydecenes, for example Puresyn 10 (Mw = 723 g/mol) and Puresyn 150 (Mw = 9200 g/mol) sold or manufactured by the company Mobil Chemicals, and mixtures thereof.
Said non-volatile oil may also be an ester oil, in particular containing between 18 and 70 carbon atoms.
Examples that may be mentioned include monoesters, diesters or triesters.
The ester oils may notably be hydroxylated.
The non-volatile ester oil may preferably be chosen from:
- monoesters comprising between 18 and 40 carbon atoms in total, in particular the monoesters of formula R1COOR2 in which Ri represents a linear or branched fatty acid residue including from 4 to 40 carbon atoms and R2 represents a hydrocarbon-based chain that is notably branched, containing from 4 to 40 carbon atoms, on condition that Ri + R2 is greater than or equal to 18, for instance Purcellin oil (cetostearyl octanoate), isononyl isononanoate, C12 to C15 alkyl benzoate, 2-ethylhexyl palmitate, octyldodecyl neopentanoate, 2-octyldodecyl stearate, 2-octyldodecyl erucate, isostearyl isostearate, diisopropyl sebacate, 2-octyldodecyl benzoate, alcohol or polyalcohol octanoates, decanoates or ricinoleates, isopropyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, 2-ethylhexyl palmitate, 2-hexyldecyl laurate, 2-octyldecyl palmitate, 2-octyldodecyl myristate or 2-diethylhexyl succinate. Preferably, they are esters of formula R1COOR2 in which Ri represents a linear or branched fatty acid residue including from 4 to 40 carbon atoms and R2 represents a hydrocarbon-based chain that is notably branched, containing from 4 to 40 carbon atoms, Ri and R2 being such that Ri + R2 is greater than or equal to 18. Preferably, the ester comprises between 18 and 40 carbon atoms in total. Preferred monoesters that may be mentioned include isononyl isononanoate, oleyl erucate and/or 2- octyldodecyl neopentanoate;
- diesters, notably comprising between 18 and 60 carbon atoms in total and in particular between 18 and 50 carbon atoms in total. It is notably possible to use diesters of dicarboxylic acids and of monoalcohols, preferably such as diisostearyl malate, or glycol diesters of monocarboxylic acids, such as neopentyl glycol diheptanoate or polyglyceryl-2 diisostearate, notably such as the compound sold under the trade reference Dermol DGDIS by the company Alzo;
- triesters, notably comprising between 35 and 70 carbon atoms in total, in particular such as triesters of a tricarboxylic acid, such as triisostearyl citrate, or tridecyl trimellitate, or glycol triesters of monocarboxylic acids such as polyglyceryl-2 triisostearate;
- tetraesters, notably with a total carbon number ranging from 35 to 70, such as pentaerythritol or polyglycerol tetraesters of a monocarboxylic acid, for instance pentaerythrityl tetrapelargonate, pentaerythrityl tetraisostearate, pentaerythrityl tetraisononanoate, glyceryl tris(2-decyl)tetradecanoate, polyglyceryl-2 tetraisostearate or pentaerythrityl tetrakis(2-decyl)tetradecanoate;
- polyesters obtained by condensation of unsaturated fatty acid dimer and/or trimer and of diol, such as those described in patent application FR 0 853 634, in particular such as of dilinoleic acid and of 1,4-butanediol. Mention may notably be made in this respect of the polymer sold by Biosynthis under the name Viscoplast 14436H (INCI name: dilinoleic acid/butanediol copolymer), or else copolymers of polyols and of dimer diacids, and esters thereof, such as Hailuscent ISDA.
- esters and polyesters of diol dimer and of monocarboxylic or dicarboxylic acid, such as esters of diol dimer and of fatty acid and esters of diol dimer and of dicarboxylic acid dimer, in particular which may be obtained from a dicarboxylic acid dimer derived in particular from the dimerization of an unsaturated fatty acid notably of Cs to C34, notably of C12 to C22, in particular of Ci6 to C20 and more particularly of Cis, such as esters of dilinoleic diacids and of dilinoleic diol dimers, for instance those sold by the company Nippon Fine Chemical under the trade names Lusplan DD-DA5® and DD-DA7®;
- vinylpyrrolidone/l-hexadecene copolymers, for instance the product sold under the name Antaron V-216 (also known as Ganex V216) by the company ISP (Mw = 7300 g/mol);
- hydrocarbon-based plant oils such as fatty acid triglycerides (which are liquid at room temperature), notably of fatty acids containing from 7 to 40 carbon atoms, such as heptanoic or octanoic acid triglycerides or jojoba oil; mention may be made in particular of saturated triglycerides such as caprylic/capric triglyceride, glyceryl triheptanoate, glyceryl trioctanoate, and Cis-36 acid triglycerides such as those sold under the reference DUB TGI 24 by Stearinerie Dubois, and unsaturated triglycerides such as castor oil, olive oil, ximenia oil and pracaxi oil;
- and mixtures thereof.
The other fatty substances that may be present in the oily phase are, for example, fatty acids including from 8 to 30 carbon atoms, for instance stearic acid, lauric acid, palmitic acid and oleic acid; waxes, for instance lanolin wax, beeswax, carnauba wax or candelilla wax, paraffin wax, lignite wax or microcrystalline waxes, ceresin or ozokerite, and synthetic waxes, for instance polyethylene waxes and Fischer-Tropsch waxes; silicone resins such as trifluoromethyl-Ci-C4-alkyl dimethicone and trifluoropropyl dimethicone; and silicone elastomers, for instance the products sold under the name KSG by the company Shin-Etsu, under the name Trefil or BY29 by the company Dow Corning, or under the name Gransil by the company Grant Industries.
As fatty substances, a composition according to the invention may preferably comprise at least one fatty alcohol wax.
Such waxes may be chosen from lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, arachidyl alcohol, behenyl alcohol, lignoceryl alcohol, ceryl alcohol, montanyl alcohol, myricyl alcohol, and mixtures thereof.
Preferentially, the fatty alcohol wax is cetyl alcohol.
As fatty substance, a composition according to the invention may preferably comprise at least one butter, in particular a plant butter. The plant butters that are suitable for use in the invention are preferably chosen from the group comprising avocado butter, cocoa butter, shea butter, kokum butter, mango butter, murumuru butter, coconut butter, apricot kernel butter, sal butter and urukum butter, and mixtures thereof, and in particular is shea butter.
These fatty substances may be chosen in a varied manner by a person skilled in the art in order to prepare a composition having the desired properties, for example in terms of consistency or texture.
Preferably, a composition according to the invention comprises a fatty phase containing at least one fatty substance.
According to a preferred embodiment, a composition according to the invention comprises at least one non-volatile hydrocarbon-based oil, and preferably at least one apolar hydrocarbon-based oil.
Preferably, a composition according to the invention comprises at least two non-volatile hydrocarbon-based oils and one non-volatile ester oil.
According to a particularly preferred embodiment, a composition according to the invention comprises at least one non-volatile hydrocarbon-based oil and at least one ester oil. Preferably, a composition according to the invention comprises at least one oil chosen from hydrocarbon-based oils of plant origin, and in particular squalane.
Preferably, a composition according to the invention comprises at least one oil chosen from synthetic esters, and in particular isopropyl lauroyl sarcosinate.
According to a particularly preferred embodiment, a composition according to the invention also comprises at least one solid fatty substance, in particular a fatty alcohol wax and/or a butter.
Preferably, the fatty phase content is between 2% and 25% by weight, in particular between 3% and 20% by weight, and preferably between 5% and 15% by weight, relative to the total weight of the composition.
Preferably, the content of solid fatty substance(s) is between 1% and 10% by weight, in particular between 1.5% and 7% by weight and preferably between 2% and 6% by weight relative to the total weight of the composition.
AQUEOUS PHASE
The aqueous phase comprises water and optionally a water-soluble solvent. According to the present invention, the term “ water-soluble solvent ” denotes a compound that is liquid at room temperature and water-miscible (miscibility with water of greater than 50% by weight at 25°C and atmospheric pressure).
The water-soluble solvents that may be used in the composition of the invention may also be volatile.
Among the water-soluble solvents that may be used in the composition according to the invention, mention may be made notably of lower monoalcohols containing from 1 to 5 carbon atoms such as ethanol and isopropanol, glycols containing from 2 to 8 carbon atoms such as ethylene glycol, hexylene glycol, propylene glycol, 1,3 -butylene glycol and dipropylene glycol, C3 and C4 ketones and C2-C4 aldehydes.
According to one embodiment variant, the aqueous phase of a composition according to the invention may comprise at least one C2-C32 polyol.
For the purposes of the present invention, the term “ polyol ” should be understood as meaning any organic molecule including at least two free hydroxyl groups.
Preferably, a polyol in accordance with the present invention is present in liquid form at room temperature.
A polyol that is suitable for use in the invention may be a compound of linear, branched or cyclic, saturated or unsaturated alkyl type, bearing on the alkyl chain at least two -OH functions, in particular at least three -OH functions and more particularly at least four -OH functions.
The polyols that are suitable for formulating a composition according to the present invention are in particular those notably containing from 2 to 32 carbon atoms and preferably 3 to 16 carbon atoms.
The polyol may be chosen, for example, from ethylene glycol, pentaerythritol, trimethylolpropane, propylene glycol, 1,3 -propanediol, butylene glycol, isoprene glycol, pentylene glycol, hexylene glycol, caprylyl glycol, glycerol, polyglycerols, such as glycerol oligomers, for instance diglycerol, polyethylene glycols, and mixtures thereof.
According to a preferred embodiment of the invention, said polyol is chosen from ethylene glycol, pentaerythritol, trimethylolpropane, propylene glycol, dipropylene glycol, caprylyl glycol, glycerol, polyglycerols and polyethylene glycols, and mixtures thereof.
According to a preferred embodiment, the composition of the invention comprises at least glycerol. Preferably, a composition according to the invention comprises from 3% to 22% by weight of glycerol, in particular from 5% to 20% by weight and more preferentially from 8% to 17% by weight of glycerol relative to the total weight of the composition.
Preferably, the aqueous phase is present in a composition according to the invention in a content ranging from 20% to 80% by weight, preferably from 30% to 75% by weight, and more preferentially from 45% to 70% by weight, relative to the total weight of said composition.
SURFACTANT
According to a preferred embodiment, the composition according to the invention may also comprise at least one surfactant.
The surfactants may be chosen from nonionic, anionic, cationic and amphoteric surfactants, and mixtures thereof. Reference may be made to Kirk-Othmer's Encyclopedia of Chemical Technology, Volume 22, pages 333-432, 3rd Edition, 1979, Wiley, for the definition of the emulsifying properties and functions of surfactants, in particular pages 347-377 of this reference, for anionic, amphoteric and nonionic surfactants.
Nonionic surfactant
Preferably, the composition according to the invention comprises at least one nonionic surfactant.
The nonionic surfactants may notably be chosen from alkyl and polyalkyl esters of poly(ethylene oxide), oxyalkylenated alcohols, alkyl and polyalkyl ethers of poly(ethylene oxide), optionally polyoxyethylenated alkyl and polyalkyl esters of sorbitan, optionally polyoxyethylenated alkyl and polyalkyl ethers of sorbitan, alkyl and polyalkyl glycosides or polyglycosides, in particular alkyl and polyalkyl glucosides or polyglucosides, alkyl and polyalkyl esters of sucrose, optionally polyoxyethylenated alkyl and polyalkyl esters of glycerol, and optionally polyoxyethylenated alkyl and polyalkyl ethers of glycerol, gemini surfactants, cetyl alcohol, stearyl alcohol, and mixtures thereof.
Oxyalkylenated, in particular oxyethylenated and/or oxypropylenated, alcohols that are preferably used are those that may include from 1 to 150 oxy ethylene and/or oxypropylene units, in particular containing from 20 to 100 oxyethylene units, in particular fatty alcohols, notably of C8-C24 and preferably of Cn-Cis; these fatty alcohols may or may not be ethoxylated, for instance stearyl alcohol ethoxylated with 20 oxyethylene units (CTFA name Steareth-20), for instance Brij® 78 sold by the company Uniqema, cetearyl alcohol ethoxylated with 30 oxyethylene units (CTFA name Ceteareth-30), and the mixture of C12- Ci5 fatty alcohols including 7 oxyethylene units (CTFA name C 12-15 Pareth-7), for instance the product sold under the name Neodol 25-7® by Shell Chemicals; or in particular oxyalkylenated (oxyethylenated and/or oxypropylenated) alcohols containing from 1 to 15 oxyethylene and/or oxypropylene units, in particular ethoxylated C8-C24 and preferably C12- Ci8 fatty alcohols, such as stearyl alcohol ethoxylated with 2 oxyethylene units (CTFA name Steareth-2), for instance Brij® 72 sold by the company Uniqema.
Optionally polyoxyethylenated alkyl and polyalkyl esters of sorbitan that are preferably used include those with a number of ethylene oxide (EO) units ranging from 0 to 100. Examples that may be mentioned include sorbitan laurate 4 or 20 EO, in particular polysorbate 20 (or polyoxyethylene (20) sorbitan monolaurate) such as the product Tween® 20 sold by the company Uniqema, or polysorbate 60, sorbitan palmitate 20 EO, sorbitan isostearate, sorbitan stearate 20 EO, sorbitan oleate 20 EO, or else the Cremophor® products (RH 40, RH 60, etc.) from BASF. The mixture of sorbitan stearate and of sucrose cocoate, sold under the name Arlacel® 2121U-FL from Croda, may also be mentioned.
Alkyl and polyalkyl glucosides or polyglucosides that are preferably used include those containing an alkyl group including from 6 to 30 carbon atoms and preferably from 6 to 18 or even from 8 to 16 carbon atoms, and containing a glucoside group preferably comprising from 1 to 5 and notably 1, 2 or 3 glucoside units. The alkylpolyglucosides may be chosen, for example, from decylglucoside (a 1 ky 1 -Cg/C 1 1 -po 1 y g 1 uco s i dc (1.4)), for instance the product sold under the name Mydol 10® by the company Kao Chemicals or the product sold under the name Plantacare 2000 UP® by the company Henkel and the product sold under the name Oramix NS 10® by the company SEPPIC; caprylyl/capryl glucoside, for instance the product sold under the name Plantacare KE 3711® by the company Cognis or Oramix CG 110® by the company SEPPIC; laurylglucoside, for instance the product sold under the name Plantacare 1200 UP® by the company Henkel or Plantaren 1200 N® by the company Henkel; cocoyl glucoside, for instance the product sold under the name Plantacare 818 UP® by the company Henkel; caprylyl glucoside, for instance the product sold under the name Plantacare 810 UP® by the company Cognis; the mixture of arachidyl glucosyl and behenyl alcohol and arachidyl alcohol, the INCI name of which is Arachidyl alcohol (and) behenyl alcohol (and) arachidyl glucoside, sold under the name Montanov® 202 by the company SEPPIC; and mixtures thereof.
Preferably, a composition according to the invention comprises at least one surfactant, in particular a nonionic surfactant, and preferably a surfactant chosen from optionally polyoxyethylenated alkyl and polyalkyl ethers of glucose or of alkylglucose.
Optionally polyoxyethylenated alkyl and polyalkyl ethers of glucose or of alkylglucose that may preferably be mentioned include methylglucose sesquistearate and PEG-20 methylglucose sesquistearate.
According to a preferred embodiment, a composition according to the invention comprises at least one surfactant chosen from optionally polyoxyethylenated alkyl and polyalkyl ethers of glucose or of alkylglucose in an optionally polyoxyethylenated alkyl and polyalkyl ethers of glucose or of alkylglucose/boron nitride mass ratio equal to 1/1.
Anionic surfactant
The anionic surfactants may be chosen from alkyl ether sulfates, carboxylates, amino acid derivatives, sulfonates, isethionates, taurates, sulfosuccinates, alkylsulfoacetates, phosphates and alkyl phosphates, polypeptides, metal salts of C10-C30 and notably C16-C25 fatty acids, in particular metal stearates and behenates, and mixtures thereof.
Amino acid derivatives that may notably be mentioned include alkali metal salts of amino acids, such as sarcosinates, for instance sodium lauroyl sarcosinate, sodium myristoyl sarcosinate, sodium palmitoyl sarcosinate, alaninates, for instance sodium N-lauroyl-N- methyl amidopropionate, triethanolamine N-lauroyl-N-methylalanine, glutamates, for instance triethanolamine monococoyl glutamate, triethanolamine lauroyl glutamate or sodium lysine dilauramidoglutamide, aspartates, for instance the mixture of triethanolamine N-lauroyl aspartate/triethanolamine N-myristoyl aspartate, glycine derivatives (glycinates), for instance sodium N-cocoyl glycinate, citrates such as the citric monoester of oxyethylenated (9 mol) cocoyl alcohols, or galacturonates such as sodium dodecyl D- galactoside uronate sold by the company Soliance.
Preferably, a composition according to the invention comprises at least one anionic surfactant, in particular chosen from amino acid derivatives.
Cationic surfactant The cationic surfactants may be chosen from alkylimidazolidiniums, such as isostearyl ethylimidonium ethosulfate, ammonium salts such as (Ci2-30-alkyl)-tri(Ci-4-alkyl)ammonium halide such as N,N,N-trimethyl-l-docosanaminium chloride (or behentrimonium chloride). Amphoteric surfactant
The compositions according to the invention may also contain one or more amphoteric surfactants, for instance N-acylamino acids such as N-alkyl aminoacetates and disodium cocoamphodiacetate, and amine oxides such as stearamine oxide, or alternatively silicone surfactants, for instance dimethicone copolyol phosphates such as the product sold under the name Pecosil PS 100® by the company Phoenix Chemical.
Silicone surfactant
The composition may also comprise at least one silicone surfactant. By way of example, as nonionic surfactants with an HLB of greater than or equal to 8 at 25°C, used alone or as a mixture, mention may be made of dimethicone copolyol or dimethicone copolyol benzoate, and as nonionic surfactants with an HLB of less than 8 at 25°C, used alone or as a mixture, mention may be made of a cyclomethicone/dimethicone copolyol mixture.
Preferably, a composition according to the invention comprises less than 2% by weight of silicone surfactant(s), in particular less than 1% by weight of silicone surfactant(s), preferably less than 0.5% by weight of silicone surfactant(s) and more preferentially is free of silicone surfactant(s).
The surfactant(s) may be present in a composition according to the invention in a proportion ranging from 0.5% to 10% by weight and preferably from 3% to 7% by weight, relative to the total weight of the composition.
Preferably, a composition according to the invention comprises less than 5% by weight of surfactant(s) relative to the total weight of the composition.
ADDITIONAL ACTIVE AGENTS
According to a preferred embodiment, a composition according to the invention also comprises at least one additional cosmetic active agent, in particular at least two additional cosmetic active agents and preferably at least three additional cosmetic active agents, other than ascorbic acid or a derivative thereof.
In particular, the additional cosmetic active agent may be at least one hydrophilic active agent. The term “hydrophilic active agent” means a water-soluble or water-dispersible active agent that is capable of forming hydrogen bonds.
As hydrophilic active agents, examples that may be mentioned include moisturizers, depigmenting agents, desquamating agents, humectants, anti-ageing agents; mattifying agents, cicatrizing agents, antibacterial agents, and mixtures thereof.
The additional active agent(s) may notably be chosen from:
- vitamins and derivatives thereof, notably esters thereof, such as tocopherol (vitamin E) and esters thereof (for instance tocopheryl acetate),
- humectants, for instance urea, hydroxyureas, glycerol, polyglycerols, glyceryl glucoside, diglyceryl glucoside, polyglyceryl glucosides and xylityl glucoside, and in particular glycerol;
- C-glycoside compounds, preferably hydroxypropyl tetrahydropyrantriol;
- antioxidant compounds;
- anti-ageing active agents, such as hyaluronic acid compounds, and notably sodium hyaluronate, salicylic acid compounds and in particular 5-n-octanoylsalicylic acid (capryloylsalicylic acid), adenosine, C-P-D-xylopyranoside-2-hydroxypropane and the sodium salt of (3-hydroxy-2-pentylcyclopentyl)acetic acid; and
- mixtures thereof.
Figure imgf000024_0001
In particular, the composition according to the invention may comprise at least one additional cosmetic active agent chosen from C-glycoside compounds, in particular of the following general formula:
S'^^X — R in which:
R denotes an unsubstituted linear C1-C4 and notably C1-C2 alkyl radical, in particular methyl;
S represents a monosaccharide chosen from D-glucose, D-xylose, N-acetyl-D- glucosamine and L-fucose, and in particular D-xylose;
X represents a group chosen from -CO-, -CH(OH)- and -CH(NH2)- and preferentially a -CH(OH)- group; and also the cosmetically acceptable salts thereof, solvates thereof such as hydrates, and optical isomers thereof.
As non-limiting illustrations of C-glycosides that are more particularly suitable for use in the invention, mention may notably be made of the following compounds: C-P-D-xylopyranoside-n-propan-2-one;
C-a-D-xylopyranoside-n-propan-2-one;
C-P-D-xylopyranoside-2-hydroxypropane; C-a-D-xylopyranoside-2-hydroxypropane; l-(C-P-D-glucopyranosyl)-2-hydroxypropane; l-(C-a-D-glucopyranosyl)-2-hydroxypropane; l-(C-P-D-glucopyranosyl)-2-aminopropane; l-(C-a-D-glucopyranosyl)-2-aminopropane; 3'-(acetamido-C-P-D-glucopyranosyl)propan-2'-one; 3'-(acetamido-C-a-D-glucopyranosyl)propan-2'-one; l-(acetamido-C-P-D-glucopyranosyl)-2-hydroxypropane; l-(acetamido-C-P-D-glucopyranosyl)-2-aminopropane; and also the cosmetically acceptable salts thereof, solvates thereof such as hydrates, and optical isomers thereof.
According to a particular embodiment, use is made of C-P-D-xylopyranoside-2- hydroxypropane or C-a-D-xylopyranoside-2-hydroxypropane, and better still C-b-ϋ- xylopyranoside-2-hydroxypropane.
According to a particular embodiment, a C-glycoside of formula illustrated above that is suitable for use in the invention may preferably be C-P-D-xylopyranoside-2- hydroxypropane, the INCI name of which is hydroxypropyl tetrahydropyrantriol, notably sold under the name Mexoryl SBB® or Mexoryl SCN® by Chimex.
The C-glycoside salts that are suitable for use in the invention may comprise conventional physiologically acceptable salts of these compounds, such as those formed from organic or mineral acids.
Examples that may be mentioned include the salts of mineral acids, such as sulfuric acid, hydrochloric acid, hydrobromic acid, hydriodic acid, phosphoric acid and boric acid. Mention may also be made of the salts of organic acids, which may include one or more carboxylic, sulfonic or phosphonic acid groups. They may be linear, branched or cyclic aliphatic acids, or alternatively aromatic acids. These acids may also include one or more heteroatoms chosen from O and N, for example in the form of hydroxyl groups. Mention may notably be made of propionic acid, acetic acid, terephthalic acid, citric acid and tartaric acid.
The solvates that are acceptable for the compounds described above comprise conventional solvates such as those formed during the final step of preparation of said compounds due to the presence of solvents. Examples that may be mentioned include solvates due to the presence of water or of linear or branched alcohols, such as ethanol or isopropanol.
The C-glycosides having the formula illustrated above are known from WO 02/051828. According to one embodiment, the composition according to the invention comprises a C- glycoside in an amount of between 0.05% and 14% by weight relative to the total weight of the composition, in particular between 2% and 12% by weight relative to the total weight of the composition and more particularly between 5% and 10% by weight relative to the total weight of the composition.
In particular, the composition according to the invention comprises a C-glycoside in an amount in active material of between 0.05% and 14% by weight relative to the total weight of the composition, in particular between 2% and 12% by weight relative to the total weight of the composition and more particularly between 5% and 10% by weight relative to the total weight of the composition.
Salicylic acid compounds
In particular, the composition according to the invention may comprise an additional cosmetic active agent chosen from salicylic acid compounds.
The salicylic acid compound present in the composition according to the invention is preferably chosen from salicylic acid and the compounds having the following formula:
Figure imgf000026_0001
in which:
- the radical R denotes a linear, branched or cyclic saturated aliphatic chain containing from 2 to 22 carbon atoms; an unsaturated chain containing from 2 to 22 carbon atoms, containing one or more double bonds that may be conjugated; an aromatic nucleus linked to the carbonyl radical directly or via saturated or unsaturated aliphatic chains containing from 2 to 7 carbon atoms; said groups possibly being substituted with one or more substituents, which may be identical or different, chosen from (a) halogen atoms, (b) the trifluoromethyl group, (c) hydroxyl groups in free form or esterified with an acid containing from 1 to 6 carbon atoms, or (d) a carboxyl function in free form or esterified with a lower alcohol containing from 1 to 6 carbon atoms;
- R’ is a hydroxyl group;
- and also salts thereof derived from a mineral or organic base.
Preferentially, the radical R denotes a linear, branched or cyclic saturated aliphatic chain containing from 3 to 11 carbon atoms; an unsaturated chain containing from 3 to 17 carbon atoms and comprising one or more conjugated or unconjugated double bonds; said hydrocarbon-based chains possibly being substituted with one or more substituents, which may be identical or different, chosen from (a) halogen atoms, (b) the trifluoromethyl group, (c) hydroxyl groups in free form or esterified with an acid containing from 1 to 6 carbon atoms, or (d) a carboxyl function in free form or esterified with a lower alcohol containing from 1 to 6 carbon atoms; and salts thereof obtained by salification with a mineral or organic base.
The compounds that are more particularly preferred are those in which the radical R is a C3- C11 alkyl group.
Among the salicylic acid compounds that are particularly preferred, mention may be made of 5-n-octanoylsalicylic acid (or capryloylsalicylic acid); 5-n-decanoylsalicylic acid; 5-n- dodecanoylsalicylic acid; 5-n-heptanoylsalicylic acid, and the corresponding salts thereof. The salicylic acid compound is preferably chosen from salicylic acid and 5-n- octanoylsalicylic acid, and more preferentially is 5-n-octanoylsalicylic acid.
The salts of the compounds having the formula illustrated above may be obtained by salification with a mineral or organic base. Examples of mineral bases that may be mentioned include alkali metal or alkaline-earth metal hydroxides, for instance sodium hydroxide or potassium hydroxide, or aqueous ammonia. Among the organic bases, mention may be made of amines and alkanolamines. Quaternary salts, for instance those described in patent FR 2 607 498, are particularly advantageous. The compounds having the formula illustrated above that may be used according to the invention are described in patents US 6 159479 and US 5 558 871, FR 2 581 542, FR 2 607 498, US 4767 750, EP 378 936, US 5 267 407, US 5 667 789, US 5 580549 and EP-A-570 230.
According to one embodiment, the composition according to the invention comprises at least one salicylic acid compound in an amount of between 0.05% and 5% by weight relative to the total weight of the composition, in particular between 0.1% and 2% by weight relative to the total weight of the composition and more particularly between 0.2% and 1% by weight relative to the total weight of the composition.
Hyaluronic acid
In particular, the composition according to the invention may comprise at least one additional cosmetic active agent chosen from hyaluronic acid or a derivative thereof.
In the context of the present invention, the term “hyaluronic acid or a derivative thereof’ notably covers the hyaluronic acid basic unit having the formula:
Figure imgf000028_0001
This is the smallest fraction of hyaluronic acid, comprising a disaccharide dimer, namely D- glucuronic acid and N-acetylglucosamine.
The term “hyaluronic acid or a derivative thereof’ also comprises, in the context of the present invention, the linear polymer comprising the polymeric unit described above, according to a sequence with alternating b(1,4) and b(1,3) glycosidic bonds, having a molecular weight (MW) which may range between 380 and 13 000 000 daltons. This molecular weight mainly depends on the source from which the hyaluronic acid is obtained and/or on the preparation methods.
In the context of the present invention, the term "hyaluronic acid or a derivative thereof" also comprises hyaluronic acid salts and notably alkali metal salts such as the sodium salt and the potassium salt. In the natural state, hyaluronic acid is present in pericellular gels, in the ground substance of connective tissues of vertebrate organs such as the dermis and epithelial tissues and in particular in the epidermis, in the articular synovial fluid, in the vitreous humour, in human umbilical cord and in the crista galli.
Thus, the term "hyaluronic acid or a derivative thereof" comprises all of the hyaluronic acid fractions or subunits having a molecular weight notably within the molecular weight range recalled above.
In the context of the present invention, it is preferred to use hyaluronic acid fractions not having any inflammatory activity.
As illustrations of the various hyaluronic acid fractions, reference may be made to the document Hyaluronan fragments: an information-rich system , R. Stem et al., European Journal of Cell Biology 58 (2006) 699-715, which reviews the listed biological activities of hyaluronic acid as a function of its molecular weight.
According to a favoured embodiment of the invention, the hyaluronic acid fractions that are suitable for the application intended by the present invention have a molecular weight of between 50 000 and 5 000 000, in particular between 100 000 and 5 000 000, notably between 400 000 and 5 000 000 Da. It is a matter in this case of high molecular weight hyaluronic acid.
Alternatively, the hyaluronic acid fractions that may also be suitable for the application intended by the present invention have a molecular weight of between 50 000 and 400 000 Da. It is a matter in this case of intermediate molecular weight hyaluronic acid. Alternatively also, the hyaluronic acid fractions that may be suitable for the application intended by the present invention have a molecular weight of less than 50 000 Da. It is a matter in this case of low molecular weight hyaluronic acid.
Finally, the term "hyaluronic acid or a derivative thereof" also comprises hyaluronic acid esters, notably those in which all or some of the carboxylic groups of the acid functions are esterified with oxyethylenated alcohols or alkyls, including from 1 to 20 carbon atoms, notably with a degree of substitution on the D-glucuronic acid of hyaluronic acid ranging from 0.5% to 50%.
Mention may notably be made of the methyl, ethyl, n-propyl, n-pentyl, benzyl and dodecyl esters of hyaluronic acid. Such esters have notably been described in D. Campoccia et al. Semisynthetic resorbable materials from hyaluronan esterification, Biomaterials 19 (1998) 2101-2127.
The molecular weights indicated above are also valid for the hyaluronic acid esters. Hyaluronic acid may notably be provided by the company Hyactive under the trade name CPN (MW: 10 to 150 kDa), by the company Soliance under the trade name Cristalhyal (MW: l.lxlO6), by the company Bioland under the name Nutra HA (MW: 820 000 Da), by the company Bioland under the name Nutra AF (MW: 69 000 Da), by the company Bioland under the name Oligo HA (MW: 6100 Da) or by the company Vam Farma Cosmetica under the name D Factor (MW: 380 Da).
In one embodiment, the hyaluronic acid is in the form of spheres. In particular, such spheres are sold by the company BASF under the name Hyaluronic Acid Spheres. This is a mixture of hyaluronic acid of different molecular weights, namely of MW 1.5 x 106, 400 000 and 600000 Da.
Sodium hyaluronate is preferably used.
The hyaluronic acid or a derivative thereof is present in the composition according to the present invention in a content of between 0.01% and 5%, preferably between 0.1% and 3% and more particularly between 0.2 and 1% by weight relative to the total weight of the composition.
According to a preferred embodiment the additional active agent(s) are chosen from humectants, preferably glycerol; C-glycoside compounds, preferably hydroxypropyl tetrahydropyrantriol; hyaluronic acid compounds, notably sodium hyaluronate; salicylic acid compounds, in particular 5-n-octanoylsalicylic acid (capryloylsalicylic acid); and mixtures thereof.
According to a preferred embodiment, a composition according to the invention comprises at least one humectant, preferably glycerol; a C-glycoside compound, preferably hydroxypropyl tetrahydropyrantriol; and a hyaluronic acid compound, notably sodium hyaluronate.
According to a preferred embodiment, a composition according to the invention comprises at least one humectant, preferably glycerol; a C-glycoside compound, preferably hydroxypropyl tetrahydropyrantriol; a hyaluronic acid compound, notably sodium hyaluronate; and a salicylic acid compound, in particular 5-n-octanoylsalicylic acid (capryloylsalicylic acid).
A composition according to the invention may comprise from 5% to 15% by weight and preferably from 8% to 12% by weight of additional active agent(s) relative to the total weight of the composition.
It is understood that these contents do not include the presence of any glycerol.
Specifically, as indicated previously, a composition according to the invention may also comprise from 3% to 22% by weight, in particular from 5% to 20% by weight and more preferentially from 8% to 17% by weight of glycerol, relative to the total weight of the composition.
ADDITIVES
A composition according to the invention may also include at least one additive chosen from the adjuvants conventionally used in the cosmetic field, such as preserving agents, fragrances, dyestuffs, polar additives, film-forming polymers, pH modifiers (acids or bases), for example citric acid, tartaric acid or oxalic acid, chelating agents, cosmetic active agents, for instance cicatrizing agents, agents for combating greasy skin, and/or anti-pollution agents, and mixtures thereof.
Needless to say, a person skilled in the art will take care to select this or these optional additional compound(s), and/or the amount thereof, such that the advantageous properties of a composition according to the invention are not, or are not substantially, adversely affected by the envisioned addition.
As mentioned above, a composition according to the invention is preferably free of compounds that may be harmful to man and/or the environment, i.e. it comprises less than 0.01% by weight, or is even free of compounds that may be harmful to man and/or the environment.
Thus, a composition according to the invention is in particular free of silicone compound and/or of ethylenediaminetetraacetic acid (EDTA), and is preferably free of silicone compound and of ethylenediaminetetraacetic acid.
According to a preferred embodiment, a composition according to the invention comprises at least one chelating agent, and preferably Trisodium Ethylenediamine Disuccinate. COMPOSITION
As stated previously, a composition according to the invention may be cosmetic and/or dermatological, and is preferably cosmetic.
A composition according to the invention is generally suitable for topical application to the skin and thus generally comprises a physiologically acceptable medium, i.e. a medium that is compatible with the skin.
It is preferably a cosmetically acceptable medium, i.e. a medium which has a pleasant colour, odour and feel and which does not cause any unacceptable discomfort, i.e. stinging, tautness or redness, liable to discourage the user from applying this composition.
A cosmetic composition according to the invention may be in any presentation form conventionally used in cosmetics according to the intended applications, in particular for topical application.
For topical application to keratin materials, and notably the skin or its integuments, a composition may notably be in the form of an aqueous or oily solution or of a dispersion of the lotion or serum type, of emulsions of liquid or semi-liquid consistency of the milk type, obtained by dispersing a fatty phase in an aqueous phase (oil-in-water), or conversely (water- in-oil), or of suspensions or emulsions of soft consistency, of the aqueous or anhydrous gel or cream type, or else of microcapsules or microparticles, or of vesicular dispersions of ionic and/or nonionic type. These compositions are prepared according to the usual methods. Preferably, a composition according to the invention is in the form of an oil-in-water (O/W) emulsion or an oil-in-water emulsified gel.
According to a preferred embodiment, a composition according to the invention is in the form of an oil-in-water emulsified gel.
According to a preferred embodiment, a composition according to the invention is in the form of an oil-in-water emulsion.
In particular, a composition according to the invention has a pH ranging from 3 to 8. Preferably, the pH of the composition ranges from 4 to 7, in particular from 4 to 6.5, or even from 4 to 6.
Thus, preferably, a composition according to the invention contains at least one pH modifier, for example sodium hydroxide, potassium hydroxide and/or sodium citrate.
A composition according to the invention may be prepared according to the techniques that are well known to those skilled in the art. INTENDED USE OF THE COMPOSITION
A composition according to the invention may be in the form of a cosmetic composition for caring for and/or making up keratin materials, preferably a cosmetic composition for caring for keratin materials, in particular of the body or of the face, preferably of the face.
These compositions may constitute cleansing, protective, treating or care creams for the face, the hands or the body, for example day creams, night creams, makeup creams, foundation creams, antisun creams, fluid foundations, protective or care body milks, antisun milks, lotions, or blister treatment products.
Thus, a composition according to the invention may be used as a care product and/or antisun product for the face and/or body, with a liquid to semi-liquid consistency, such as oils, milks, lotions, more or less smooth creams, or gel-creams.
Preferably, a composition according to the invention is in the form of a composition for caring for keratin materials, in particular the skin of the body or the face, preferably of the face.
In particular, a composition of the invention may be in the form of an anti-ageing care composition for the skin of the body or the face, in particular the face.
According to another embodiment, a composition of the invention may be in the form of a composition for making up keratin materials, in particular of the body or of the face, preferably of the face.
Thus, according to a submode of this embodiment, a composition of the invention may be in the form of a makeup base composition for making up. A composition of the invention may in particular be in the form of a foundation.
According to yet another submode of this embodiment, a composition of the invention may be in the form of a lip product, notably a lipstick.
According to yet another submode of this embodiment, a composition of the invention may be in the form of a product for the eyebrows, in particular an eyebrow pencil.
Such compositions are notably prepared according to the general knowledge of a person skilled in the art.
Thus, the invention also relates to the use of a composition according to the invention for caring for and/or making up keratin materials, preferably for caring for keratin materials, in particular the skin of the body and/or of the face. The invention also relates to a cosmetic process for making up and/or caring for keratin materials, in particular the skin and/or the lips, comprising at least one step of applying a composition as defined previously to said keratin materials.
Preferably, the invention also relates to a cosmetic process for caring for keratin materials, in particular the skin and/or the lips, comprising at least one step of applying a composition as defined above to said keratin materials.
In particular, a composition according to the invention may be used for combating the signs of skin ageing.
Thus, the present application also relates to the use of a composition according to the invention for combating the signs of skin ageing.
The composition may be applied to the skin by hand or using an applicator.
Throughout the description, including the claims, the expression “ including a ” should be understood as being synonymous with “ including at least one”, unless otherwise specified. The terms “ between ... and...”, “comprises from ... to...”, “formed from ... to...” and “ ranging from... to...” should be understood as being inclusive of the limits, unless otherwise specified.
The invention is illustrated in greater detail by the examples presented below. Unless otherwise indicated, the amounts shown are expressed as mass percentages.
Example
Measurement and evaluation methods
Centrifugation
The stability of the compositions is evaluated by passing the compositions obtained through a Thermo Scientific centrifuge, at T = 24 hours, according to the following protocol: 2500 rpm for 1 hour. Observation of phase separation, of leaching or of a change in appearance is checked. Stability measurement
The stability of the compositions is evaluated at various times and under the following conditions: at T = 24 hours at room temperature (25 °C). It may also be evaluated by placing the compositions obtained for 15 days at 55°C, and at T = 1 month and T = 2 months, at 4°C, at room temperature (25°C), at 37°C and at 45°C. Observation of phase separation, of leaching or of a change in appearance is checked.
Viscosity Measurement
The viscosity of the formulations may be measured using a Rheomat RM 200 rheometer from Lamy Rheology with a No. 3 spindle at a speed of 200 rpm, at room temperature (25°C) and at atmospheric pressure (760 mmHg). The values are recorded at T = 30 seconds and at T = 10 minutes.
Measurement of the organoleytic properties of the compositions
The tacky aspect of the deposits produced with the formulations is evaluated according to the following protocol: each of the compositions is applied to the skin so as to form a deposit of uniform thickness.
The tacky nature is evaluated by the individual during drying of the formulation after 2 minutes at room temperature (25°C).
Example 1
The anti-ageing care compositions for the face, in the form of oil-in-water emulsions, 1-A, 1-B and 2 according to the invention, are prepared in the weight proportions as detailed in the table below. The values are expressed as weight percentages relative to the total weight of the composition.
Figure imgf000036_0001
Tableau 1
Protocol for preparing the compositions
The compositions are prepared with a Minilab from the company Olsa, equipped with a planetary mixer and an emulsifying mixer.
The compounds of phase A are weighed out in the main tank, and heated to 55°C. When the temperature is reached, the mixture is homogenized for 10 minutes (emulsifying mixer at 1000 rpm and planetary mixer at 30 rpm). A clear yellow liquid phase is obtained.
The compounds of phase B are introduced, and the mixture is maintained at 55°C and homogenized until the phase is homogeneous and free of grains (emulsifying mixer at 4000 rpm and planetary mixer at 50 rpm for 15 to 20 minutes).
In parallel, phase C is prepared in a beaker, heated to 70-75°C with stirring using a magnetic bar until a clear, colourless phase is obtained. The mixture is then cooled to 55°C, and then introduced into the main tank (emulsifying mixer at 4000 rpm and planetary mixer at 50 rpm for 10 minutes).
After homogenization, heating is stopped and the mixture is cooled to between 15 and 20°C. The compounds of phase D are first homogenized using a blender/deflocculator (emulsifying mixer at 4000 rpm and planetary mixer at 50 rpm for 10 minutes).
The dilution water is then added (phase E) (emulsifying mixer at 4000 rpm and planetary mixer at 50 rpm for 10 minutes).
Results
Compositions 1-A, 1-B and 2 according to the invention are stable, even after 2 months of storage, and have good sensory qualities.
Example 2
The anti-ageing care compositions for the face, in the form of oil-in-water emulsions, 3 according to the invention and 4 to 8 outside the invention, are prepared in the weight proportions as detailed in the table below, as indicated in Example 1. The values are expressed as weight percentages relative to the total weight of the composition.
Figure imgf000038_0001
Figure imgf000039_0001
Results
Composition 3 according to the invention is stable and has good sensory qualities. Composition 4 outside the invention is stable, but very tacky. Compositions 5, 6, 7 and 8 outside the invention are unstable. Furthermore, composition 7 shows a substantial loss of viscosity after storage for 2 months at 45°C.
Example 3
The anti-ageing care compositions for the face, in the form of oil-in-water emulsions, 9 and 10 according to the invention and 11 to 15 outside the invention, are prepared in the weight proportions as detailed in the table below, as indicated in Example 1. The values are expressed as weight percentages relative to the total weight of the composition.
Figure imgf000040_0001
Results
Compositions 9 and 10 according to the invention are stable and have good sensory qualities. Compositions 11 to 15 outside the invention are unstable.
Example 4
The anti-ageing care composition for the face, in the form of an oil-in-water emulsion, 16 outside the invention, is prepared in the weight proportions as detailed in the table below, as indicated in Example 1. The values are expressed as weight percentages relative to the total weight of the composition.
Figure imgf000041_0001
Results
Composition 16 outside the invention is unstable. Example 5
The anti-ageing care compositions for the face, in the form of oil-in-water emulsions, 17 to 20 outside the invention, are prepared in the weight proportions as detailed in the table below, as indicated in Example 1. The values are expressed as weight percentages relative to the total weight of the composition.
Figure imgf000043_0001
Results
Compositions 17 to 20 outside the invention are unstable. Example 6
The anti-ageing care composition for the face, in the form of an oil-in-water emulsion, 21 outside the invention, is prepared in the weight proportions as detailed in the table below, as indicated in Example 1. The values are expressed as weight percentages relative to the total weight of the composition.
Figure imgf000044_0001
Results
Composition 21 outside the invention is unstable.
Example 7
The anti-ageing care composition for the face, in the form of an oil-in-water emulsion, 22 according to the invention, is prepared in the weight proportions as detailed in the table below, as indicated in Example 1. The values are expressed as weight percentages relative to the total weight of the composition.
Figure imgf000045_0001
Results
Composition 22 according to the invention is stable and has good sensory qualities.
Example 8
The anti-ageing care composition for the face, in the form of an oil-in-water emulsion, 23 according to the invention, is prepared in the weight proportions as detailed in the table below, as indicated in Example 1. The values are expressed as weight percentages relative to the total weight of the composition.
Figure imgf000046_0001
Results
Composition 23 according to the invention is stable and has good sensory qualities. Example 9
The anti-ageing care compositions for the face, in the form of oil-in-water emulsions, 24 to 26 outside the invention, are prepared in the weight proportions as detailed in the table below, as indicated in Example 1. The values are expressed as weight percentages relative to the total weight of the composition.
Figure imgf000047_0001
Results
Compositions 24 to 26 outside the invention are unstable.
In addition, composition 24 shows substantial yellowing after storage for 2 months at 45°C. The residual film is obtained with compositions 25 and 26 show substantial pilling.

Claims

Claims
1. Composition, notably a cosmetic composition, in particular for making up and/or caring for keratin materials, comprising:
- at least one aqueous phase gelled with:
(i) at least 1.8% by weight of an anionic terpolymer of 2-methyl-2-[(l-oxo-2- propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate, relative to the total weight of the composition, or
(ii) at least 1.8% by weight of a mixture of an anionic terpolymer of 2-methyl-2-[(l-oxo-2- propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate, and of a 2-acrylamido-2-methylpropanesulfonic acid polymer, relative to the total weight of the composition;
- at least one fatty phase;
- at least 5% by weight of ascorbic acid and/or a derivative thereof, relative to the total weight of the composition; and
- at least boron nitride.
2. Composition according to the preceding claim, characterized in that the aqueous phase is gelled with at least 1.8% by weight of an anionic terpolymer of 2-methyl- 2-[(l-oxo-2-propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate, in particular at least 1.9% by weight of an anionic terpolymer of 2-methyl-2-[(l-oxo-2-propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate, and preferably at least 2% by weight of an anionic terpolymer of 2-methyl-2-[(l-oxo-2- propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate, relative to the total weight of the composition.
3. Composition according to Claim 1, characterized in that the aqueous phase is gelled with at least 1.8% by weight of a mixture of an anionic terpolymer of 2-methyl-2- [(l-oxo-2-propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate and of a 2-acrylamido-2-methylpropanesulfonic acid polymer, in particular at least 1.9% by weight of a mixture of an anionic terpolymer of 2- methyl-2-[(l-oxo-2-propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate and of a 2-acrylamido-2- methylpropanesulfonic acid polymer, and preferably at least 2% by weight of a mixture of an anionic terpolymer of 2-methyl-2-[(l-oxo-2-propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate and of a 2- acrylamido-2-methylpropanesulfonic acid polymer, relative to the total weight of the composition.
4. Composition according to the preceding claim, characterized in that the anionic terpolymer of 2-methyl-2-[(l-oxo-2-propenyl)amino]-l-propanesulfonic acid partially or totally salified in ammonium salt form, of N,N-dimethylacrylamide and of tetraethoxylated lauryl acrylate crosslinked with trimethylolpropane triacrylate and the 2- acrylamido-2-methylpropanesulfonic acid polymer are present in the composition in a mass ratio equal to 1/1.
5. Composition according to any one of the preceding claims, characterized in that the 2-acrylamido-2-methylpropanesulfonic acid polymer is a 2-acrylamido-2- methylpropanesulfonic acid homopolymer.
6. Composition according to any one of the preceding claims, characterized in that the composition is free of natural or naturally sourced hydrophilic gelling agent, and in particular free of non-starchy polysaccharides.
7. Composition according to any one of the preceding claims, characterized in that the fatty phase content is between 2% and 25% by weight, in particular between 3% and 20% by weight and preferably between 5% and 15% by weight, relative to the total weight of the composition.
8. Composition according to any one of the preceding claims, characterized in that the fatty phase comprises at least one non-volatile hydrocarbon-based oil and at least one ester oil.
9. Composition according to the preceding claim, characterized in that the fatty phase also comprises at least one solid fatty substance, in particular a fatty alcohol wax and/or a butter.
10. Composition according to any one of the preceding claims, characterized in that it comprises at least one surfactant, in particular a nonionic surfactant, and preferably a surfactant chosen from optionally polyoxyethylenated alkyl and polyalkyl ethers of glucose or of alkylglucose.
11. Composition according to any one of the preceding claims, characterized in that it comprises at least one surfactant chosen from optionally polyoxyethylenated alkyl and polyalkyl ethers of glucose or of alkylglucose in an optionally polyoxyethylenated alkyl and polyalkyl ethers of glucose or of alkylglucose/boron nitride mass ratio equal to 1/1.
12. Composition according to any one of the preceding claims, characterized in that it also comprises at least one additional cosmetic active agent, in particular at least two additional cosmetic active agents and preferably at least three additional cosmetic active agents, other than ascorbic acid or a derivative thereof.
13. Composition according to the preceding claim, characterized in that the additional active agent(s) are chosen from humectants, preferably glycerol; C-glycoside compounds, and preferably hydroxypropyl tetrahydropyrantriol; hyaluronic acid compounds, and notably sodium hyaluronate; salicylic acid compounds, and in particular 5- n-octanoylsalicylic acid (capryloylsalicylic acid); and mixtures thereof.
14. Composition according to any one of the preceding claims, characterized in that it is free of silicone compound and/or of ethylenediaminetetraacetic acid (EDTA), and is preferably free of silicone compound and of ethylenediaminetetraacetic acid.
15. Composition according to any one of the preceding claims, characterized in that it is in the form of an oil-in-water emulsion or an oil-in-water emulsified gel.
16. Composition according to any one of the preceding claims, characterized in that it is a cosmetic composition for caring for keratin materials.
17. Cosmetic process for caring for keratin materials, in particular the skin and/or the lips, comprising at least one step of applying a composition as defined in any of the preceding claims to said keratin materials.
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