CLEANSING AND / OR CARE COMPOSITION FOR KERATINOUS MATERIALS

Abstract

CLEANSING AND / OR CARE COMPOSITION FOR KERATINOUS MATERIALS The present invention relates to a composition, preferably for cleansing and / or caring for keratinous materials, by weight of the total composition, comprising: A) 0.3% to 5% by weight of at least one acrylate copolymer; B) niacinamide and / or its derivatives; and C) xanthine and / or its derivatives. This disclosure also relates to a non-therapeutic method for cleansing and / or caring for keratinous materials, comprising at least one step of applying the composition according to this disclosure to the keratinous materials. Figure for abstract: none

Description

Title of the invention: CLEANSING AND / OR CARE COMPOSITION FOR KERATINOUS MATERIALS technical field

[0001] This disclosure relates to a composition, preferably for cleansing and / or conditioning keratinous materials, particularly those of the scalp and / or hair. This disclosure also relates to a method for cleansing and / or conditioning keratinous materials, particularly those of the scalp and / or hair, using the composition described in this disclosure. CONTEXT

[0002] Many people suffer from hair loss problems and have long sought to reduce the amount of hair loss during scalp and / or hair cleansing and conditioning. Various products are developed to meet the needs of combating hair loss (AHL for anti-hair loss), many of which apply caffeine alone or in combination with other active ingredients for effective AHL and / or good hair conditioning.

[0003] At the same time, it is well known that the washing / rinsing phase is a critical moment for people with severe hair loss. Rubbing, pulling, and combing will cause significant friction on the hair fibers and ultimately lead to hair loss from the root or breakage along the length of the hair. It is very important that a shampoo can effectively reduce hair loss during the washing / rinsing phase and provide a pleasant user experience to alleviate stress and improve the condition of the scalp.

[0004] A stable, abundant, supple, and long-lasting lather is highly desirable for consumers when washing their hair. Rapid lathering can help reduce friction between the hair fibers during washing. A creamy lather with extremely dense bubbles can ensure even distribution on the scalp and hair fibers, leaving a large contact area for better deposition and penetration. An abundant lather provides rich care and a nourishing feel, acting as a cushion between the fibers by reducing pulling force. A stable and long-lasting lather extends hold time by completely embracing dirt and sebum within the lather, for a thoroughly cleansed scalp.

[0005] In addition, it is also desirable for consumers that an AHL product has a transparent appearance and an easy-to-use texture, which puts them in a good mood when using such a product.

[0006] Therefore, there is a need to develop a cosmetic product for the cleansing and / or care of keratinous materials with comprehensive beneficial effects in terms of transparent appearance, pleasant texture to use, provision of a volumized appearance of hair, better resistance to hair loss and / or superior foam properties. Summary of the invention

[0007] The inventors have discovered that such a need can be satisfied by the composition according to the present disclosure.

[0008] According to a first aspect, the present disclosure relates to a composition, preferably for cleansing and / or conditioning keratinous materials, with respect to the total weight of the composition, comprising: A. of approximately 0.3% by weight to 5% by weight of at least one acrylate copolymer; B. niacinamide and / or its derivatives; C. of xanthine and / or its derivatives.

[0009] According to a second aspect, the present disclosure relates to a process for cleaning and / or caring for keratinous materials, in particular of the scalp and / or hair, comprising at least one step of applying the above composition to the keratinous materials.

[0010] According to a third aspect, the present disclosure relates to a use of the above composition for cleaning and / or caring for keratinous materials, including the scalp and / or hair.

[0011] Other subjects and features, aspects and advantages of the present invention will become even clearer upon reading the detailed description and examples that follow. DETAILED DESCRIPTION OF THE INVENTION

[0012] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as that commonly understood by a person skilled in the art in the field covered by this disclosure. Where the definition of a term in this description conflicts with the meaning commonly understood by a person skilled in the art in the field covered by this disclosure, the definition described herein shall apply.

[0013] Throughout this application, all proposed ranges are intended to include each specific range within the given ranges, and combinations of intermediate sub-ranges. Thus, a range of 1-5 specifically includes 1, 2, 3, 4 and 5, as well as sub-ranges such as 2-5, 3-5, 2-3, 2-4, 1-4, etc.

[0014] Throughout this application, the expression "at least one" used in this description is equivalent to the expression "one or more".

[0015] Throughout this application, an embodiment defined with "comprising" or similar shall be understood as encompassing a preferred embodiment defined with "consisting substantially of" and a preferred embodiment defined with "consisting of".

[0016] Apart from the operational examples, or unless otherwise indicated, all numbers expressing quantities of components and / or reaction conditions should be understood as being modified in all cases by the term "approximately", with a meaning classically known in the art, for example, to within 10% of the number indicated (for example, "approximately 10%" means 9% - 11% and "approximately 2%" means 1.8% - 2.2%).

[0017] As used herein, the expression "keratinous material(s)" is intended to encompass skin, hair, scalp, eyelashes, eyebrows, body hair, nails, lips or mucous membranes, preferably the scalp and / or hair.

[0018] The term “INCI” is an abbreviation for International Nomenclature of Cosmetic Ingredients, which is a system of names provided by the International Nomenclature Committee of the Personal Care Products Council to describe ingredients in personal care products.

[0019] In the application, unless specifically stated otherwise, contents, parts and percentages are expressed on a weight basis.

[0020] For the purposes of this disclosure, and unless otherwise indicated:

[0021] - an "alkyl" radical means a linear or branched saturated radical containing, by for example, from 1 to 30 carbon atoms;

[0022] - an alkylene radical* » designates a linear divalent saturated hydrocarbon group or branched into Ci-Cio, such as methylene, ethylene or propylene;

[0023] - an "aryl" radical is a monocyclic, bicyclic hydrocarbon cyclic radical or tricyclic, fused or not, unsaturated and aromatic, comprising from 6 to 30 carbon atoms, preferably from 6 to 14 carbon atoms, more preferably from 6 to 12 carbon atoms; preferably, the aryl group comprises at least one ring of 6 carbon atoms such as phenyl, naphthyl, anthryl, phenanthryl and biphenyl, it being understood that the aryl radical may be substituted by one or more alkyl groups (in C1-C4) such as methyl, preferably tolyl, xylyl or methylnaphthyl; preferably, the aryl group represents a phenyl. Acrylates copolymer

[0024] The composition according to the present invention comprises at least one acrylate copolymer.

[0025] As used herein, the term "acrylate copolymer" is intended to designate a polymer resulting from the copolymerization of at least two chemically different monomers, at least one of which is chosen from unsaturated carboxylic acids, preferably acrylic acid or methacrylic acid, or their esters, preferably acrylate or methacrylate.

[0026] Preferably, the acrylates copolymer is derived from at least one unsaturated carboxylic acid and at least one ester of an unsaturated carboxylic acid and a monoalcohol comprising 1 to 6 carbon atoms and preferably 1 to 4 carbon atoms.

[0027] More particularly, the unsaturated carboxylic acid, which is in particular α,[3-monoethylenically unsaturated, is a monomer corresponding to the formula (I) below: H2C--CC--OH h II R 0 (I)

[0028] in which R1 designates H or CH3 or C2H5, which corresponds to acrylic acid, methacrylic acid or ethacrylic acid motifs.

[0029] Preferably, the other monomeric ester of an unsaturated carboxylic acid and a monoalcohol comprising from 1 to 6 carbon atoms and preferably from 1 to 4 carbon atoms is a monomer of formula (II) below:

[0030] wherein R1 designates H or CH3 or C2H5 (i.e. acrylate, methacrylate or ethacrylate motifs) and preferably H (acrylate motifs) or CH3 (methacrylate motifs), and R2 designates an alkyl group comprising from 1 to 6 carbon atoms and preferably from 1 to 4 carbon atoms.

[0031] As esters of an unsaturated carboxylic acid and a fatty monoalcohol comprising 1 to 6 carbon atoms according to formula (II), methyl acrylate, ethyl acrylate, propyl acrylate and butyl acrylate, and the corresponding methacrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate and butyl methacrylate, may be mentioned in particular.

[0032] According to one embodiment, the acrylates copolymer can be crosslinked, for example, with a crosslinking agent, which is a well-known copolymerizable unsaturated polyethylene monomer, for example diallyl phthalate, allyl (meth)acrylate, divinylbenzene, (poly)ethylene glycol dimethacrylate or methylenebisacrylamide.

[0033] Among acrylate copolymers of this type, polymers consisting of the following monomers will be used in particular:

[0034] i) of an unsaturated carboxylic acid, which is in particular α,p-monoethylenically unsaturated, corresponding to formula (I) below:

[0035] in which R1 designates H or CH3 or C2H5, which corresponds to acrylic acid, methacrylic acid or ethacrylic acid motifs;

[0036] ii) of an ester of an unsaturated carboxylic acid and a monoalcohol comprising from 1 to 6 carbon atoms and preferably from 1 to 4 carbon atoms, of formula (II) below:

[0037] in which R1 designates H or CH3 or C2H5 (i.e. acrylate, methacrylate or ethacrylate motifs) and preferably H (acrylate motifs) or CH3 (methacrylate motifs), and R2 designates an alkyl group comprising from 1 to 6 carbon atoms and preferably from 1 to 4 carbon atoms,

[0038] iii) and optionally a crosslinking agent which is a well-known copolymerizable unsaturated polyethylene monomer, such as diallyl phthalate, allyl (meth)acrylate, divinylbenzene, (poly)ethylene glycol dimethacrylate and methylenebisacrylamide.

[0039] Examples of acrylate copolymers as defined above are the crosslinked copolymer of acrylic acid and ethyl acrylate sold under the trade name Aculyn 33 by Rohm & Haas, which is in aqueous dispersion containing 28% by weight of active material, the crosslinked copolymer of methacrylic acid / ethyl acrylate in the form of an aqueous dispersion at 30% by weight sold under the name Carbopol Aqua SF-1 Polymer by Lubrizol, and the copolymer of (meth)acrylic acid and a (meth)acrylate alkyl in Ci-C4 sold under the name Synthalen W400 by 3V Sigma, at 30% by weight of active material in water.

[0040] Preferably, the acrylate copolymer is chosen from crosslinked copolymers of (meth)acrylic acid and a Ci-C4 alkyl (meth)acrylate, and preferably from crosslinked copolymers of (meth)acrylic acid and ethyl (meth)acrylate.

[0041] Preferably, the acrylate copolymer used according to this disclosure is the crosslinked copolymer of (meth)acrylic acid and ethyl (meth)acrylate which can be commercially available from the supplier LUBRIZOL under the trade name CARBOPOL AQUA SF-1 POLYMER.

[0042] Preferably, the acrylates copolymer is present in the composition according to this disclosure in an amount ranging from 0.3% by weight to 5% by weight, preferably from 0.4% by weight to 4% by weight, and more preferably from 0.5% by weight to 3% by weight, relative to the total weight of the composition.

[0043] The inventors have discovered that, compared to xanthan gum, guar gum, cellulose, or their derivatives, acrylate copolymer is particularly suitable for the composition of the present disclosure and can contribute to a user-friendly texture when used in a specific quantity. Niacinamide and / or its derivatives

[0044] The composition according to this disclosure includes niacinamide and / or its derivatives.

[0045] Niacinamide, also known as vitamin B3, is a compound with the following formula (III):

[0046] Niacinamide derivatives that may be cited include, for example, nicotinic acid, nicotinyl alcohol, nicotinuric acid, nicotinyl hydroxamic acid, nicotinic acid esters such as tocopherol nicotinate, amides derived from niacinamide by substitution of the hydrogen of -CONH2, products from a reaction with carboxylic acids and amino acids, esters of nicotinyl alcohol and carboxylic acids such as acetic acid, salicylic acid, glycolic acid or palmitic acid.

[0047] The following niacinamide derivatives may also be mentioned: 2-chloronicotinamide, 6-methylnicotinamide, 6-aminonicotinamide, N-methylnicotinamide, N,N-dimethylnicotinamide, N-(hydroxymethyl)nicotinamide, quinoline acid imide, nicotinanilide, N-benzylnicotinamide, N-ethylnicotinamide, nifenazone, nicotinaldehyde, isonicotinic acid, methylisonicotinic acid, thionicotinamide, nialamide, 2-mercaptonicotinic acid, nicomol and niaprazine, methyl nicotinate and sodium nicotinate.

[0048] Preferably, niacinamide and / or its derivatives are selected from niacinamide, 2-chloronicotinamide, 6-methylnicotinamide, 6-aminonicotinamide, N-methylnicotinamide, N,N-dimethylnicotinamide, N-(hydroxymethyl)ni cotinamide, quinoline acid imide, nicotinanilide, N-benzylnicotinamide, N-ethylnicotinamide, nifenazone, nicotinaldehyde, isonicotinic acid, methylisonicotinic acid, thionicotinamide, nialamide, 2-mercaptonicotinic acid, nicomol, niaprazine, methyl nicotinate, sodium nicotinate, and mixtures thereof, and more preferably niacinamide.

[0049] Preferably, the niacinamide and / or its derivatives used according to this disclosure is niacinamide which may be commercially available from the supplier DSM NUTRITIONAL PRODUCTS under the trade name NIACINAMIDE PC.

[0050] Preferably, niacinamide and / or its derivatives are present in the composition of the present invention in an amount ranging from 0.001% to 20% by weight, preferably from 0.002% to 15% by weight, more preferably from 0.005% to 10% by weight, and even more preferably from 0.005% to 8% by weight, relative to the total weight of the composition. Xanthine and / or its derivatives

[0051] The composition according to this disclosure includes xanthine and / or its derivatives.

[0052] Xanthine and / or its derivatives refer to one or more compounds corresponding to formula (IV) below,

[0053] wherein Rh R2 and R3 are independently of each other H, alkyl in C6 substituted or unsubstituted, or alkenyl in C6 substituted or unsubstituted, wherein the alkyl or alkenyl may be substituted by one or more substituents selected from hydroxyl, carboxyl, carbonyl, amino (said amino may be substituted by 1 or 2 alkyl in C6) or halogen.

[0054] Xanthine and / or its derivatives that may be cited include, for example, xanthine, caffeine, theobromine, theophylline, paraxanthine, diprophylline, uric acid, dyphylline and 1TBMX (3-isobutyl-l-methylxanthine).

[0055] The following xanthine derivatives can also be mentioned: acefylline, xanthinol nicotinate, diniprophylline, etamiphylline, etophylline, proxyphylline, pentophylline, propentophylline, pyridophylline and bamiphylline.

[0056] Preferably, xanthine and / or its derivatives are chosen from xanthine, caffeine, theobromine, theophylline, paraxanthine, diprophylline, uric acid, dyphylline, IBMX (3-isobutyl-l-methylxanthine), xanthinol nicotinate, acefylline, diniprophylline, etamiphylline, etophylline, proxyphylline, pentophyllin, propentophyllin, pyridophyllin, and mixtures thereof, and more preferably caffeine.

[0057] Preferably, the xanthine and / or its derivatives used according to this disclosure are caffeine which may be commercially available from the supplier BASF under the trade name CAFFEINE.

[0058] Advantageously, xanthine and / or its derivatives are present in the composition of this disclosure in an amount ranging from 0.001% by weight to 15% by weight, preferably from 0.002% by weight to 10% by weight, and more preferably from 0.005% by weight to 5% by weight, relative to the total weight of the composition. Anionic surfactant

[0059] The composition according to this disclosure optionally includes at least one anionic surfactant.

[0060] As used herein, the term "anionic surfactant" means a surfactant comprising, as ionic or ionizable groups, only anionic groups. In this description, a species is said to be "anionic" when it carries at least one permanent negative charge or when it can be ionized into a negatively charged species under the conditions of use of the composition of the invention (for example, the medium or pH) and when it does not contain any cationic charge.

[0061] Preferably, the anionic group of the anionic surfactant belongs to the group chosen from: -C(O)OH, -C(O)O , -SO3H, -S(O)2O, -OS(O)2OH, -OS(O)2O , -P(O)OH 2, -P(O)2O , -P(O)O2, -P(OH)2, =P(O)OH, -P(OH)O , =P(O)O , =POH, =PO . Examples of anionic surfactants include surfactants comprising anionic groups such as carboxylate, sulfate, sulfonate, sulfoacetate, sulfosuccinate, phosphate, isethionate, sarcosinate, glutamate, lactylate or taurate, fatty acid salts, galactosiduronic acid salts, ether carboxylic acid salts and mixtures thereof, with a cationic counterion which is usually metallic (alkali metal or alkaline earth metal, such as Na, K, or Mg) or organic (such as an ammonium, amine or amino alcohol).

[0062] Preferably, the anionic surfactant is chosen from:

[0063] • (C6-C3o)alkyl sulfates, (C6-C30)alkyl ether sulfates, (C6-C30)alkylamido ether sulfates, alkylaryl polyether sulfates or monoglyceride sulfates; preferably for this type of anionic surfactant, (C6-C30)alkyl sulfates, (C6-C30)alkyl ether sulfates, or a mixture is used. Examples include lauryl alcohol ether sulfate and alkylene oxide, containing from 1 to 50 alkylene oxide groups; more preferably, the anionic surfactant is chosen from lauryl alcohol ether sulfate and alkylene oxide containing from 1 to 4 alkylene oxide groups, including ethylene oxide groups; for example, sodium laureth sulfate containing on average 2.2 ethylene oxide groups which is sold by Cognis (BASF) under the name Texapon® AOS 225 UP, Rhodia under the name Rhodapex® esb-70 / fla3, Clariant under the name Genapol® LRO L'O, and sodium laureth sulfate containing on average 1 ethylene oxide group which is sold by Zhejiang Zanyu Technology under the name SLES (N1EO); Sodium laureth sulfate will be used in particular;

[0064] • (C6-C3o)alkyl sulfonates, (C6-C30)alkylamidesulfonates, (C6-C30)alkylaryl sulfonates , a-oléfine sulfonates , paraffine sulfonates ;

[0065] • (C6-C3o)akyl phosphates ;

[0066] • (C6-C3o)alkyl sulfosuccinates, (C6-C30)alkyl éther sulfosuccinates ou (C6-C30 )alkylamido sulfosuccinates ;

[0067] • (C6-C3o)alkyl sulfoacétates ;

[0068] • (C6-C24)acyl sarcosinates, par exemple lauroyl sarcosinates, myristoyl sarcosinates, palmitoyl sarcosinates ;

[0069] • (C6-C24)acylglutamates ;

[0070] • éthers (C6-C30)alkylpolyglycoside carboxyliques ;

[0071] • (C6-C3o)alkylpolyglycoside sulfosuccinates ;

[0072] • (C6-C3o)alkyl sulfosuccinamates ;

[0073] • (C6-C24)acylsarcosinates, par exemple le lauroylméthyliséthionate de sodium, le cocoylisthionate de sodium ;

[0074] • N-[(C6-C24)acyl]taurates, par exemple le méthylcocoyltaurate de sodium ;

[0075] • fatty acid salts;

[0076] • (C8-C2o) acyl lactylates;

[0077] • salts of (C6-C30)alkyl-D-galactosiduronic acids;

[0078] • salts of (C6-C30)alkyl ether polyoxyalkylened carboxylic acids, of (C6-C30) acids )alkylaryl polyoxyalkylenated carboxylic ethers or (C6-C3o)alkylamido polyoxyalkylenated carboxylic ethers;

[0079] • and their mixtures.

[0080] Preferably, the alkyl or acyl radicals of these various anionic surfactants comprise from 12 to 20 carbon atoms. Preferably, the oxyalkylated or polyoxyalkylated anionic surfactants comprise from 1 to 50 alkylene oxide groups, preferably from 1 to 30 alkylene oxide groups, more preferably from 1 to 10 alkylene oxide groups, in particular ethylene oxide groups.

[0081] More preferably, the composition according to this disclosure further comprises at least one anionic sulfate surfactant. Preferably, the anionic sulfate surfactant is selected from an alkali metal, alkaline earth metal, or ammonium salt of (C6-C30)alkyl sulfates, (C6-C30)alkyl ether sulfates, and mixtures thereof.

[0082] More preferably, the anionic surfactant is chosen from sodium lauryl sulfate, sodium laureth sulfate, ammonium lauryl sulfate, ammonium laureth sulfate, and mixtures thereof.

[0083] Most preferably, the anionic surfactant is sodium laureth sulfate, preferably containing on average 0.8-2.2 ethylene oxide groups.

[0084] Preferably, the anionic surfactant used according to this disclosure is sodium laureth sulfate, which may be commercially available from the supplier BASF under the trade name TEXAPON AOS 225 UP.

[0085] Preferably, the anionic surfactant is present in the composition according to this disclosure in an amount ranging from 1% by weight to 50% by weight, preferably from 2% by weight to 40% by weight, more preferably from 3% by weight to 30% by weight, relative to the total weight of the composition. Amphoteric surfactant

[0086] The composition according to this disclosure optionally includes at least one amphoteric surfactant.

[0087] As used herein, the expression "amphiphilic surfactant" is intended to designate a molecule or substance comprising a hydrophobic group and one or more hydrophilic groups comprising two fractions of opposite formal charges or capable of carrying opposite formal charges (depending on the acid-base properties and pH of the solution).

[0088] Suitable amphiphilic surfactants include, but are not limited to: alkyl betaines, alkyl amidoalkyl betaines, alkyl sulfobetaines, alkyl glycinates, alkyl carboxyglycinates, alkyl amphoacetates, alkyl amidoalkyl hydroxysultaines, acyl taurates and acyl glutamates, in which the alkyl and acyl groups have, for example, 8 to 18 carbon atoms.

[0089] Preferably, the amphoteric surfactant is chosen from (C8-Ci8)alkylamido(Ci-C6)alkyl betaines, (C8-Ci8)alkylamido(Ci-C6)alkyl hydroxysultaines, (C8-Ci8)alkyl amphoacetates, and mixtures thereof, and preferably chosen from cocamidopropyl betaine, cocamidopropyl hydroxysultaine, sodium cocoamphoacetate, disodium cocoamphodiacetate, and mixtures thereof, and more preferably cocamidopropyl betaine.

[0090] Preferably, the amphoteric surfactant used according to this disclosure is cocamidopropyl betaine, which may be commercially available from the supplier BASF under the trade name DEHYTON PK 45®.

[0091] Preferably, the amphiphilic anionic surfactant is present in the composition according to this disclosure in an amount ranging from 0.5% by weight to 20% by weight, preferably from 1% by weight to 15% by weight, and more preferably from 1.5% by weight to 10% by weight, relative to the total weight of the composition. Aqueous solvent

[0092] The composition according to this disclosure may include at least one aqueous solvent.

[0093] Suitable aqueous solvents include, but are not limited to, water, C2-C6 polyols, or C2-C8 monoalcohols, such as ethanol and isopropanol. The term "polyol" should be understood as any organic molecule comprising at least two free hydroxyl groups. Examples of polyols that may be cited include glycols, for example butylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, hexylene glycol, glycerol (i.e., glycerin), and polyethylene glycols.

[0094] Preferably, the composition according to this disclosure comprises water. Advantageously, the water content in the composition according to this disclosure ranges from 25% by weight to 95% by weight, preferably from 30% by weight to 90% by weight, and more preferably from 35% by weight to 80% by weight, relative to the total weight of the composition. Additional ingredients

[0095] According to various embodiments, the compositions of this disclosure are provided for application to keratinous materials, such as the scalp and / or hair. In accordance with these embodiments, the compositions of this disclosure may comprise various ingredients classically useful in cleansing and / or conditioning compositions for keratinous materials, such as active ingredients, humectants, fatty substances, anti-dandruff agents, thickening agents, anti-seborrheic agents, other agents to prevent hair loss and / or to promote hair regrowth, vitamins and provitamins including panthenol, sequestrants, pH adjusters, chelating agents, colorants, plasticizers, acidifying agents, opacifiers, pearlescent or pearlescent agents, antioxidants, hydroxy acids, perfumes, preservatives, and other multifunctional additives.

[0096] A non-exhaustive list of these ingredients can be found in US patent application publication No. 2004 / 0170586. Further examples of these ingredients Additional information can be found in the International Cosmetic Ingredient Dictionary and Handbook (9th ed. 2002).

[0097] A person skilled in the art shall ensure that the selection of optional additional additives and / or their quantity is such that the advantageous properties of the composition according to this disclosure are not, or are not substantially, adversely affected by the contemplated addition.

[0098] These ingredients can be selected in various ways by a person skilled in the art to prepare a composition that has the desired properties, for example, consistency or fragrance. In particular, the ingredients, if used, and their quantities are specifically determined according to their product / application, for example, lotion, shampoo, rinse-out conditioner, emulsion, and the like.

[0099] These ingredients (if any) may be present in the composition in an amount ranging from 0.01% to 80%, such as from 0.1% to 50%, relative to the total weight of the composition. Composition

[0100] The composition according to this disclosure may be a cosmetic composition, preferably for cleansing and / or caring for keratinous materials.

[0101] Preferably, this disclosure relates to a keratinous material cleansing and / or care composition comprising, relative to the total weight of the composition: A. from 0.3% by weight to 5% by weight of at least one acrylate copolymer; B. from 0.001% by weight to 20% by weight of niacinamide and / or its derivatives; C. from 0.001% by weight to 15% by weight of xanthine and / or its derivatives; D. Optionally, from 1% by weight to 50% by weight of at least one surfactant anionic; and E. Optionally, from 0.5% by weight to 20% by weight of at least one amphoteric surfactant.

[0102] Preferably, the composition has a pH value in the range of 5.5-7, and more preferably of 5.6-6.2.

[0103] More preferably, this disclosure relates to a keratinous material cleansing and / or care composition comprising, relative to the total weight of the composition: A. of 0.4% by weight to 4% by weight of at least one acrylate copolymer selected from crosslinked copolymers of (meth)acrylic acid and a Ci-C 4 alkyl (meth)acrylate, and mixtures thereof; B. from 0.002% by weight to 15% by weight of niacinamide and / or its derivatives selected from niacinamide, 2-chloronicotinamide, 6- methylnicotinamide, 6-aminonicotinamide, N-methylnicotinamide, N,N-dimethylnicotinamide, N-(hydroxymethyl)nicotinamide, quinoline acid timothy, nicotinanilide, N-benzylnicotinamide, N-ethylnicotinamide, nifenazone, nicotinaldehyde, isonicotinic acid, methylisonicotinic acid, thionicotinamide, nialamide, 2-mercaptonicotinic acid, nicomol, niaprazine, methyl nicotinate, sodium nicotinate, and mixtures thereof; C. from 0.002% by weight to 10% by weight of xanthine and / or its derivatives selected from xanthine, caffeine, theobromine, theophylline, paraxanthine, chlorotheophylline, diphyllin, uric acid, dyphylline, cafaminol, Taminophylline, IBMX (3-isobutyl-l-methylxanthine), xanthinol nicotinate, acefylline, diniprophylline, tetamiphylline, etophylline, proxyphylline, pentophyllin, propentophyllin, pyridophyllin, bamiphylline, and mixtures thereof; D. Optionally, from 2% by weight to 40% by weight of at least one anionic surfactant selected from an alkali metal, alkaline earth metal or ammonium salt of (C6-C30)alkyl sulfates, (C6-C30)alkyl ether sulfates, and mixtures thereof; and E. Optionally, from 1% by weight to 15% by weight of at least one amphoteric surfactant selected from (C8-Ci8)alkylamido(Ci-C6)alkyl betaines, (C8-Ci8)alkylamido(Ci-C6)alkyl hydroxysultaines, (C8-Ci8)alkyl amphoacetates, and mixtures thereof.

[0104] More preferably, the present disclosure relates to a keratinous material cleansing and / or care composition comprising, relative to the total weight of the composition: A. of 0.5% by weight to 3% by weight of a crosslinked copolymer of (meth)acrylic acid and ethyl (meth)acrylate; B. from 0.005% by weight to 8% by weight of niacinamide; C. from 0.005% by weight to 5% by weight of caffeine; D. Optionally, from 3% by weight to 30% by weight of an alkali metal, alkaline earth metal or ammonium salt of (C6-C30)alkyl sulfates, (C6-C30)alkyl ether sulfates, or mixtures thereof; and E. Optionally, from 1.5% by weight to 10% by weight of a (C8-Ci8)alkylamido(Ci-C6)alkyl betaine.

[0105] The inventors have discovered that the composition according to the present disclosure can achieve comprehensive beneficial effects in terms of transparent appearance, pleasant texture, improved resistance to hair loss, and properties superior foam. After applying the above composition to keratinous materials, particularly the scalp and / or hair, the composition can generate a very abundant, soft and long-lasting stable foam with an extremely large contact area with the hair fibers and scalp, which effectively reduces the friction of the fibers during hair shampooing and reduces the amount of hair loss.

[0106] The composition according to this disclosure is particularly useful for a cosmetic product for cleansing and / or caring for keratinous materials, preferably a shampoo against hair loss. Preparation and use

[0107] The composition of this disclosure can generally be prepared according to the general knowledge of a person skilled in the art. However, it is understood that a person skilled in the art may choose the preparation method, based on their general knowledge, taking into account the nature of the constituents used, for example their solubility in the vehicle, and the intended application for the compositions or the necessary product.

[0108] According to one embodiment, the composition according to this disclosure can be used for the cleansing and / or conditioning of keratinous materials, in particular the scalp and / or hair. This use may take the form of a process for cleansing and / or conditioning keratinous materials, in particular the scalp and / or hair, comprising the step of applying the composition of this disclosure to the keratinous materials, in particular the scalp and / or hair.

[0109] The composition according to this disclosure can be applied by any means allowing uniform distribution of the composition on the keratinous materials and generation of foam with a large contact area with the hair fibers and scalp, preferably using the fingers.

[0110] The invention will be illustrated in more detail by the following examples, which present particularly advantageous embodiments.

[0111] Although the numerical ranges and parameters that represent the broad scope of this disclosure are approximations, the numerical values ​​presented in the specific examples are reported as accurately as possible. However, every numerical value inherently contains some errors that necessarily result from the standard deviation found in its respective measurements. EXAMPLES

[0112] The following examples are given by way of illustration of the present invention and shall not be construed as limiting the scope.

[0113] The principal raw materials used, their trade names and suppliers are listed in Table 1 below. Other materials not specified here were each commercially available.

[0114] [Table 1] Painting#! INCI Name Abbreviation Trade Name Supplier SODIUM LAURETH SULFA TE (SODIUM LAURETH SULFATE) SLES TEXAPON AOS 225 UP BASF COCAMIDOPROPYL BETAINE (COCAMIDOPROPYL BETAINE) CAPB DEHYTON PK 4 5 BASF CAFFEINE (CAFFEINE) CAFFEINE (CAFFEINE) BASF NIACINAMIDE NIACINAMIDE PC DSM NUTRIT IONAL PRODUCTS ACRYLATES COPOLYMER (ACRYLATES COPOLYMER) CARBOPOL AQ UA SF-1 POLYMER LUBRIZOL CELLULOSE CELLULOBEAD SD-10 DAITO KASEI KOGYO

[0116] Inventive Examples 1-2 and Comparative Examples 1-6

[0117] Compositions of Inventive Examples (Ex.) 1-2 and Comparative Examples (EC.) 1-6 were prepared according to the quantities of ingredients given in Table 2. The quantity of each ingredient is given as % by weight relative to the total weight of the composition, unless otherwise indicated - MA: active substance.

[0118] Preparation procedure:

[0119] The above compositions were prepared according to the following steps: 1. Weighing of each of the raw materials in proportion; 2. Add SLES and CAPB to water and mix for complete dispersion; 3. Addition of caffeine and / or niacinamide to the mixture obtained in step 2) and mixing for complete dispersion; 4. Addition of acrylate copolymer, xanthan gum or cellulose to the mixture obtained in step 3) and mixing for complete dispersion; 5. pH correction to 6.0 with SODIUM HYDROXIDE or CITRIC ACID.

[0120] [Table 2] Table #2 Components Ex. 1 Ex. 2 EC. 1 EC. 2 CE. 3 EC. 4 CE. 5 CE. 6 SLES 9 MA 11 MA 11 MA 9 MA 11 MA 11 MA 11 MA 11 MA CAPB 6 MA 4 MA 4 MA 6 MA 4 MA 4 MA 4 MA 4 MA 4 MA CAFFEINE 2 2 2 2 2 2 2 - NIACINAMIDE 3 3 3 3 3 3 - 3 ACRYLATE COPOLYMER 1.5 MA 0.75 MA 0.01 MA 6.5 MA 0.75 MA 0.75 MA XANTHANE GUM 0.75 CELLULOSE 0.75 WATER QSP 100 QSP 1 00 QSP 1 00 QSP 1 00 QSP 1 00 QSP 1 00 QSP 1 00 SODIUM HYDROXIDE or CITRIC ACID pH = 6 .0 pH = 6.0 pH = 6.0 pH = 6.0 pH = 6.0 pH = 6.0 pH = 6.0 pH = 6.0

[0122] *QSP 100 denotes a quantity sufficient to complete to 100%. ASSESSMENT 1. Texture, clarity

[0123] 1.1 Texture

[0124] The texture of each composition in Ex. 1-2 and EC. 1 to 6 was evaluated by applying and spreading each composition on the back of the hand of a texture evaluation specialist.

[0125] The results have been summarized in Table 3.

[0126] [Table 3]

[0127] [Tables3] Example No. Texture Example 1 Slightly fine shampoo texture, good to use Example 2 Slightly fine shampoo texture, good to use Example 1 Texture too fine, runs easily from the hand Example 2 Sticky texture, difficult to spread on the skin Example 3 Phase separation, unusable Example 4 Phase separation, unusable Example 5 Crystal precipitate, unusable Example 6 Slightly fine shampoo texture, good to use

[0128] 1.2 Clarity

[0129] The clarity of each composition in Ex. 1-2 was evaluated using the 2100N TURBIDMETER equipment. The results showed that the compositions in Ex. 1-2 were transparent with a clarity score < 50 NTU.

[0130] 2, Resistance to hair loss and volume appearance

[0131] The compositions of Ex. 1, Ex. 2, EC. 1, EC. 2 and EC. 6 were evaluated in terms of hair volume appearance and resistance to hair loss according to the following consumer test protocols:

[0132] 1) Recruitment of 30 subjects (young women, aged 22 to 35 years) who declared they themselves have a hair loss problem;

[0133] 2) division of subjects into 5 groups (6 subjects / group);

[0134] 3) instruction given to the subjects in each group to use each composition of the Ex. 1, Ex. 2, EC. 1, EC. 2 and EC. 6, respectively, every day at home for two weeks, and the instructions for use are as follows:

[0135] - application of 12 g of the composition to all the hair and scalp,

[0136] - massage for 2 minutes,

[0137] - rinsing of the composition,

[0138] - blowing on the hair to dry it completely;

[0139] 4) after 2 weeks of use, collection of feedback from subjects via a questionnaire based on their user experience during the trial period with the following questions:

[0140] - I experience less hair loss during hair washing than before;

[0141] - my hair has more volume than before.

[0142] The answers to the questions were given according to the following scoring standard, and the scores for each composition were averaged.

[0143] - 5 means very likely.

[0144] - 4 means probable.

[0145] - 3 means no difference.

[0146] - 2 means improbable.

[0147] - 1 means very unlikely.

[0148] The results have been summarized in Table 4.

[0149] [Table 4]

[0150] [Tables4] Ex. 1 Ex. 2 EC. 1 EC. 2 EC. 6 Resistance to hair loss 4.5 4.8 3.3 3.5 3.3 Hair volume appearance 4.5 4.5 3.8 3.2 3.5 3. Foam properties

[0151] The compositions of Ex. 1-2 and EC. 1 were tested for foam properties, including foam volume, bubble count and bubble stability, on the KRUSS DFA100 dynamic foam analyzer (KRUSS GmbH, Hamburg, Germany) according to the following test protocols: 1. Mixing the composition with water at a ratio of 2:40 to obtain a mixture; 2. Injection of 40 mL of the mixture into the DFA100 sample container; 3. Insertion of the sample container into the analyzer, fixing the position; 4. Start of the test and collection of data on the properties of the foam.

[0152] The results have been summarized in Table 5.

[0153] [Table 5]

[0154] [Tables5] Properties Ex. 1 Ex. 2 EC. 1 Foam volume 525 mL 520 mL 350 mL Bubble count 23251 / mm² 27736 / mm² 1478 / mm² Bubble stability (TFLS, 50%) 450 s 490 s 360 s

[0155] Ex. 1-2 generated a very abundant, flexible, and long-lasting stable foam that exhibited desirable properties in terms of foam volume and bubble stability. Whereas EC. 1 exhibited a low foam volume and poor bubble stability. This type of bubble could not withstand gravity, force of stretching or pressure at the air / liquid interface and would easily collapse over time.

[0156] These results demonstrated that the compositions of the Inventive Examples displayed comprehensive beneficial effects in terms of transparent appearance, pleasant texture to use, provision of a volumized hair appearance, better resistance to hair loss and superior foam properties.

[0157] The preceding description illustrates and describes the disclosure. Furthermore, the disclosure presents and describes only the preferred embodiments, but as mentioned above, it should be understood that it can be used in various other combinations, modifications, and environments, and that it may undergo changes or modifications in the scope of the inventive concepts as expressed herein, in accordance with the teachings above and / or the skills or knowledge of the relevant art. The embodiments described herein are further intended to explain the best known embodiments of the applicant and to enable other persons skilled in the art to use the disclosure in such or other embodiments, and with the various modifications required by the particular applications or uses thereof.

[0158] Accordingly, the description is not intended to limit the invention to the form disclosed herein. The appended claims are also intended to be interpreted as including other embodiments.

Claims

Demands

1. Composition, preferably for cleansing and / or conditioning keratinous materials, relative to the total weight of the composition, comprising: A) 0.3% by weight to 5% by weight of at least one acrylate copolymer; B) niacinamide and / or its derivatives; and C) xanthine and / or its derivatives.

2. Composition according to claim 1, further comprising D) at least one anionic surfactant.

3. Composition according to any one of the preceding claims, further comprising E) at least one amphoteric surfactant.

4. Composition according to any one of the preceding claims, wherein the acrylate copolymer is selected from crosslinked (meth)acrylic acid and Ci-C4 alkyl (meth)acrylate copolymers, and mixtures thereof, and preferably crosslinked (meth)acrylic acid and ethyl (meth)acrylate copolymers.

5. Composition according to any one of the preceding claims, wherein niacinamide and / or its derivatives are selected from niacinamide, 2-chloronicotinamide, 6-methylnicotinamide, 6-aminonicotinamide, N-methylnicotinamide, N,N-dimethylnicotinamide, N-(hydroxymethyl)nicotinamide, quinoline acid timothy, nicotinanilide, N-benzylnicotinamide, N-ethylnicotinamide, nifenazone, nicotinaldehyde, isonicotinic acid, methylisonicotinic acid, thionicotinamide, nialamide, 2-mercaptonicotinic acid, nicomol, niaprazine, methyl nicotinate, sodium nicotinate, and mixtures thereof, and preferably niacinamide.

6. Composition according to any one of the preceding claims, wherein xanthine and / or its derivatives are selected from xanthine, caffeine, theobromine, theophylline, paraxanthine, chlorotheophylline, diprophylline, uric acid, dyphylline, cafaminol, taminophylline, IBMX (3-isobutyl-1-methylxanthine), xanthinol nicotinate, acefylline, diniprophylline, etamiphylline, etophylline, proxyphylline, propentophylline, propentophylline, pyridophylline, bamiphylline and mixtures thereof, and preferably caffeine.

7. Composition according to any one of claims 2 to 6, wherein the anionic surfactant is selected from an alkali metal, alkaline earth metal or ammonium salt of (C6-C3o)alkyl sulfates, (C6-C3o)alkyl ether sulfates, and mixtures thereof, and preferably selected from sodium laureth sulfate, sodium lauryl sulfate, ammonium laureth sulfate, ammonium lauryl sulfate, and mixtures thereof.

8. Composition according to any one of claims 3 to 7, wherein the amphoteric surfactant is selected from (C8-Ci8)alkylamido(Ci-C6)alkyl betaines, (C8-Ci8)alkylamido(Ci-C6)alkyl hydroxysultaines, (C8-Ci8)alkyl amphoathetas, and mixtures thereof, and preferably selected from cocamidopropyl betaine, cocamidopropyl hydroxysultaine, sodium cocoamphoacetate, disodium cocoamphodiacetate, and mixtures thereof.

9. Composition according to any one of the preceding claims, relative to the total weight of the composition, comprising: A) 0.5% to 3% by weight of an acrylate copolymer; B) 0.005% to 8% by weight of niacinamide; C) 0.005% to 5% by weight of caffeine; D) 3% to 30% by weight of an alkali metal, alkaline earth metal or ammonium salt of (C6-C30)alkyl sulfates, (C6-C30)alkyl ether sulfates, or mixtures thereof; and E) 1.5% to 10% by weight of a (C8-Ci8)alkylamido(Ci-C6)alkyl betaine.

10. Non-therapeutic method for cleaning and / or caring for keratinous materials, in particular of the scalp and / or hair, comprising at least one step of applying the composition according to any one of claims 1 to 9 on keratinous materials.