Composition for conditioning keratinous materials

Abstract

The present invention relates to a composition for conditioning keratinous materials, comprising: (A) spherical particles of lipophilically modified silica; (B) a vehicle / solvent selected from water and alcohol; and (C) at least one conditioning active agent.

Description

[Technical Field]

[0001] Technical Field The present invention relates to a composition for conditioning keratinous materials, in particular the skin, scalp, or hair together with the scalp. The present invention also relates to a method for conditioning keratinous materials, in particular the skin, scalp, or hair together with the scalp, using the composition of the present invention. [Background technology]

[0002] background Keratinous materials are widely present on the surface of the human body, such as the skin, scalp, and hair. Many people have long sought to cool their body surfaces so that they feel comfortable in their daily lives and work. In particular, the feeling of stickiness / greasy dirt is a particular concern for many people. Therefore, various products have been developed to address the feeling of stickiness or greasy dirt on the human body.

[0003] Of the keratinous materials on the body surface, the scalp is particularly prone to oiliness. A variety of formulations have been developed for a greasy or oily scalp, including those provided in separate forms, such as lotions, sprays, etc., and those incorporated into conventional products for the hair and / or scalp, such as shampoos, leave-on and / or rinse-off conditioners.

[0004] A variety of conditioning compositions have been developed primarily for hair, and are generally used to improve or restore natural shine, luster, smoothness and softness to the hair. When used in conjunction with shampooing, the generally accepted method for conditioning the hair has been to shampoo the hair, then rinse the hair, and then apply a conditioner composition, optionally followed by a second rinse. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] U.S. Patent No. 4,131,576 [Patent Document 2] U.S. Patent Application Publication No. 2004 / 0170586 [Non-patent literature]

[0006] [Non-Patent Document 1] International Cosmetic Ingredient Dictionary and Handbook (9th edition, 2002) Summary of the Invention [Problem to be solved by the invention]

[0007] Therefore, there remains a need in the art to develop new compositions primarily for scalp care, especially for a non-greasy feel. [Means for solving the problem]

[0008] SUMMARY OF THE INVENTION Silica is known to be used in cosmetics, for example, as a conventional filler or as a substrate for absorbing dyes for lakes. Silica derivatives and / or modified silicas are also used. However, the art is not aware of any role of (modified) silica in resolving the greasy condition of keratinous materials. Through in-depth research, the present inventors have surprisingly found that the use of specifically modified silica, particularly modified in terms of both structure and chemical bonding, in a special form can effectively inhibit the migration of sebum in keratinous materials, particularly on the scalp, and thus the greasy feeling.

[0009] One subject of the present invention is thus Spherical particles of oleophilically modified silica uniformly dispersed in a medium / solvent, and At least one vehicle / solvent A leave-on composition for conditioning keratinous materials comprising:

[0010] The compositions according to the invention are particularly useful for conditioning keratinous materials, for example, in particular for scalp care. Thus, the compositions of the invention can be in various forms, such as lotions, creams, sprays, etc., for application directly to the scalp, to the skin, or to the hair together with the scalp. DETAILED DESCRIPTION OF THE INVENTION

[0011] Embodiments of the present invention Throughout this description, including the claims, the term "comprising a" should be understood to be synonymous with "comprising at least one," unless otherwise specified. Furthermore, as used in this description, the expression "at least one" is equivalent to the expression "one or more."

[0012] Throughout this description, including the claims, embodiments defined using "comprising" or the like should be understood to encompass preferred embodiments defined using "consisting essentially of," as well as preferred embodiments defined using "consisting of."

[0013] Except in the operating examples or where otherwise indicated, all numbers expressing quantities of ingredients and / or reaction conditions are in all instances modified by the term "about" and should be understood to have the meaning conventionally known in the art, e.g., within 10% of the indicated numerical value (e.g., "about 10%" means 9% to 11%, "about 2%" means 1.8% to 2.2%).

[0014] Throughout this description, including the claims, "keratinous materials" according to the invention are skin, hair, scalp, eyelashes, eyebrows, body hair, nails, lips or mucous membranes. Preferably, the keratinous materials according to the invention are areas that are prone to feeling sticky or greasy, such as the scalp or skin, and / or areas where a sticky or greasy feeling has an impact, for example on the hair.

[0015] Throughout this description, including the claims, "caring for", "caring for" and the like according to the present invention should be understood to encompass any means for caring for, maintaining or improving the condition of keratinous materials, and include not only conventional means for caring for keratinous materials, such as the skin or scalp, but also any means known to be useful for conditioning and / or cleansing keratinous materials, such as the hair or scalp.

[0016] In this application, contents, parts and percentages are expressed on a mass basis unless specifically stated otherwise.

[0017] The present invention relates to a composition for caring for keratinous materials, comprising: (A) Spherical particles of lipophilically modified silica uniformly dispersed in a medium / solvent; (B) at least one vehicle / solvent selected from water and alcohol, and (C) at least one conditioning active agent The present invention relates to a composition comprising:

[0018] The present invention therefore provides the use of lipophilically modified silica spherical particles for combating the greasy feel of keratinous materials on body surfaces, particularly the scalp.

[0019] Other characteristics and advantages of the invention will become more apparent on reading the description and examples that follow.

[0020] Lipophilically modified silica spherical particles (A) The composition of the present invention comprises spherical particles of lipophilically modified silica (A).

[0021] According to the present invention, "spherical particles" refers to particles that are spherical or at least approximately spherical in shape and / or have an aspect ratio of about 0.9 to 1.1, e.g., about 0.95 to 1.05. For example, a person skilled in the art can determine whether a particle is spherical in shape using conventional knowledge. In particular, for a given silica, it is within the ordinary skill of a person skilled in the art to distinguish spherical shapes from other shapes such as plates, rods, powders, strips, irregular shapes, and similarly from amorphous shapes.

[0022] According to the present invention, a "uniformly dispersed" state is desirable for silica. For example, the formation of a dispersion, emulsion, solution, etc., having definitions and / or criteria known in the art, can be said to achieve a "uniformly dispersed" state. Nevertheless, it should be understood that once one skilled in the art can determine that a state is significantly distinct from a "not uniformly dispersed" state, that state can be considered to effectively satisfy the "uniformly dispersed" state.

[0023] According to the present invention, "oleophilically modified" silica refers to silica that has been modified to have an oleophilic property. According to the present invention, oleophilic modification refers to any organo-modification that can impart hydrophobic or oleophilic properties to silica. For example, silica can be treated with a siloxane compound, such as hydroxydimethylsiloxane (or other silanes, such as silazanes), through which silanol groups on the surface of the silica condense with silanol groups on the siloxane compound. Among other useful examples of "oleophilically modified" silica, there can be mentioned silica silylate and dimethylsilyl silica, such as silica silylate, available from Tokuyama Corporation under the name AIRLICA® TL-10.

[0024] According to the present invention, when incorporated into a composition, the lipophilically modified silica spherical particles can exhibit an oil absorption capacity of 500 ml / 100 g or more, 600 ml / 100 g or more, or even 700 ml / 100 g or more.

[0025] The lipophilically modified silica spherical particles (A) may be present in the composition according to the invention in an amount ranging from 0.01% to 5% by weight, preferably from 0.1% to 3% by weight, or preferably from 0.3% to 1% by weight, relative to the total weight of the composition.

[0026] Vehicle / Solvent (B) The composition according to the invention can advantageously comprise at least one medium / solvent for use as component (B), comprising water and / or an organic medium / solvent. For the purposes of the present invention, component (B) serves as a medium for dispersing component (A), the spherical particles of lipophilically modified silica, and, if present, other insoluble components as uniformly as possible, and as a solvent for other soluble components, if present.

[0027] water The composition according to the present invention may advantageously contain water in various amounts. When the composition is applied with a low viscosity, for example in the form of a leave-on lotion, a relatively large amount of water may be used. For example, water is used in a content of 40% by weight or more relative to the total weight of the composition. The content of water in the low-viscosity composition according to the present invention is preferably in the range of 40% by weight to 99% by weight, more preferably 50% by weight to 90% by weight, or 60% by weight to 80% by weight, relative to the total weight of the composition.

[0028] In the case of high-viscosity applications of the composition, for example in the form of a leave-on cream, a relatively small amount of water can be used. The high-viscosity composition according to the present invention advantageously contains water in a content of 40% by weight or less, relative to the total weight of the composition (I). The water content in the low-viscosity composition according to the present invention is preferably in the range of 10% by weight to 40% by weight, more preferably 15% by weight to 35% by weight, or 20% by weight to 30% by weight, relative to the total weight of the composition.

[0029] Organic Media / Solvents The composition according to the invention may also comprise one or more organic vehicles / solvents, preferably water-soluble organic vehicles / solvents (solubility in water at 25° C. and atmospheric pressure of 5% or more).

[0030] Examples of organic media / solvents that may be mentioned include, alone or in mixtures, linear or branched, preferably saturated, monohydric alcohols or diols containing 2 to 10 carbon atoms, such as ethanol, (iso)propanol, butanol, hexylene glycol (2-methyl-2,4-pentanediol), neopentyl glycol and 3-methyl-1,5-pentanediol, butylene glycol, dipropylene glycol and propylene glycol; aromatic alcohols, such as phenylethyl alcohol; polyols containing three or more hydroxyl functions, in particular C3-C6 polyols, such as glycerol; polyol ethers, such as the monomethyl, monoethyl and monobutyl ethers of ethylene glycol, propylene glycol or its ethers, such as propylene glycol monomethyl ether; and also diethylene glycol alkyl ethers, in particular the C1-C4 alkyl ethers, such as the monoethyl ether or monobutyl ether of diethylene glycol.

[0031] When present, the organic medium / solvent generally represents between 0.1% and 40% by weight, preferably between 1% and 30% by weight, or between 5% and 20% by weight, relative to the total weight of the composition according to the invention.

[0032] Conditioning Activator (C) The composition according to the invention may also comprise at least one conditioning active (C), which contributes to the conditioning effect, especially in the case of leave-on conditioner products useful for keratinous materials.

[0033] The conditioning active (C) of the present invention may refer to an ingredient that enhances the appearance and feel of the scalp / hair by increasing hair tension, suppleness, or shine, or by improving the texture of hair damaged by physical or chemical treatment. Conventional scalp / hair conditioning actives are well suited for the present invention. Such conditioning actives include non-silicone cationic surfactants, silicones, fatty esters, and other ingredients known in the art to have desirable hair conditioning properties.

[0034] Among them, cationic surfactants are widely used as conditioning agents.The ability of this type of cationic surfactant to provide conditioning effect to hair is due to the hydrophobic nature of the alkyl chain and the cationic charge of the polar head group.An example of a known cationic surfactant is a quaternary ammonium compound containing at least one long alkyl chain in the molecule.The term "non-silicone cationic surfactant" refers to a surfactant that does not have a silicone atom in its structure and is positively charged when contained in the composition of the present invention.This surfactant may have one or more permanent positive charges or may contain one or more functional groups that can be cationized in the composition of the present invention.

[0035] When the conditioning agent is a fatty ester, it may be either an ester of a C8 to C30 fatty acid and a C1 to C30 monohydric alcohol or polyol, including an ester of a C8 to C30 fatty acid and a C8 to C30 fatty alcohol, or an ester of a C1 to C7 dibasic acid and a C8 to C30 fatty alcohol.

[0036] The conditioning active (C) of the present invention may also be one that provides a cooling and / or refreshing sensation, such as menthol and its derivatives, such as ethylmenthanecarboxamide, menthyl lactate, menthoxypropanediol.

[0037] The conditioning active (C) may be present in the composition according to the invention in an amount ranging from 0.001% to 1% by weight, preferably in the range from 0.01% to 0.5% by weight, or preferably in the range from 0.02% to 0.2% by weight, relative to the total weight of the composition.

[0038] Thickener (D) As a leave-on form, the leave-on product is preferably capable of being uniformly distributed on the scalp or on the hair together with the scalp. Therefore, at least one thickener (D) is preferably incorporated into the composition according to the invention so as to be able to adjust the viscosity of the resulting product and to promote the lamellar distribution or the formation of a uniform film of the composition on the scalp or on the hair together with the scalp.

[0039] Thickeners (D) include those that increase the viscosity of the composition without significantly altering the effectiveness of one or more of the active ingredients in the composition. Thickeners can also increase the composition stability of the composition.

[0040] Non-limiting examples of thickeners (D) include carboxylic acid polymers, crosslinked polyacrylate polymers, polyacrylamide polymers, polysaccharides, and gums.

[0041] Examples of carboxylic acid polymers include crosslinkable compounds containing one or more monomers derived from acrylic acid, substituted acrylic acid, and salts and esters of these acrylic and substituted acrylic acids, where the crosslinker contains two or more carbons. The carbon-carbon double bond is derived from a polyol. Examples of commercially available carboxylic acid polymers include carbomer, which is a homopolymer of acrylic acid crosslinked with an allyl ether of sucrose or pentaerythritol (e.g., CARBOPOL® ULTREZ 10 POLYMER from LUBRIZOL).

[0042] Non-limiting examples of polyacrylamide polymers, including nonionic polyacrylamide polymers, including substituted branched or unbranched polymers, include polyacrylamide, isoparaffin, and laureth-7, acrylamide, and substituted multi-block copolymers of acrylamide with acrylic acid and substituted acrylic acids.

[0043] Non-limiting examples of polysaccharides include cellulose, carboxymethylhydroxyethylcellulose, cellulose acetate propionate, hydroxyethylcellulose, hydroxyethylethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, methylhydroxyethylcellulose, microcrystalline cellulose, sodium cellulose sulfate, and mixtures thereof. Another example is alkyl-substituted cellulose, in which the hydroxyl groups of a cellulosic polymer are hydroxyalkylated (preferably hydroxyethylated or hydroxypropylated) to form a hydroxyalkylated cellulose, followed by C 10 ~C 30 The linear or branched alkyl groups are further modified with ether linkages. These polymers are typically C 10 ~C 30 They are ethers of linear or branched chain alcohols and hydroxyalkylcelluloses. Other useful polysaccharides include linear scleroglucans containing (1-3) linked glucose units, each of three units having (1-6) linked glucoses.

[0044] Non-limiting examples of gums include gum arabic, agar, algin, alginic acid, ammonium alginate, amylopectin, calcium alginate, calcium carrageenan, carnitine, carrageenan, dextrin, gelatin, guar gum, guar hydroxypropyltrimonium chloride, hectorite, hyaluronic acid, hydrated silica, hydroxypropyl chitosan, hydroxypropyl guar, karaya gum, seaweed, locust bean gum, natto gum, potassium alginate, potassium carrageenan, propylene glycol alginate, sclerotium gum, sodium carboxymethyldextran, sodium carrageenan, tragacanth, xanthan gum, and mixtures thereof.

[0045] Other examples of polymeric thickeners that may be mentioned include vinyl polymers such as polyvinylpyrrolidone, copolymers of methyl vinyl ether and malic anhydride, copolymers of vinyl acetate and crotonic acid, copolymers of vinylpyrrolidone and vinyl acetate; copolymers of vinylpyrrolidone and caprolactam; polyvinyl alcohol.

[0046] The thickener may be present in the composition according to the invention in an amount ranging from 0.01% to 5% by weight, preferably in the range from 0.05% to 3% by weight, or preferably in the range from 0.1% to 1% by weight, relative to the total weight of the composition.

[0047] Cationic polymer (E) The composition according to the invention may optionally comprise at least one cationic polymer.

[0048] The term "cationic polymer" is intended to mean any polymer containing cationic groups and / or groups that can be ionized into cationic groups. Preferably, the cationic polymer is hydrophilic or amphiphilic. Preferred cationic polymers are selected from those containing units containing primary, secondary, tertiary, and / or quaternary amine groups, which can either form part of the polymer backbone or be carried by side-chain substituents directly attached thereto. Preferably, the composition can comprise a cationic polysaccharide, in particular cationic cellulose and cationic galactomannan gum. For purposes of the present invention, the composition preferably comprises cationic cellulose.

[0049] Among the cationic celluloses, the compositions include cationic cellulose copolymers or cellulose derivatives grafted with water-soluble quaternary ammonium monomers, as described, for example, in U.S. Pat. No. 4,131,576, and mention may be made of hydroxyalkylcelluloses, such as hydroxymethylcellulose, hydroxyethylcellulose or hydroxypropylcellulose, in particular grafted with methacryloylethyltrimethylammonium salts, methacrylamidopropyltrimethylammonium salts, dimethyldiallylammonium salts or hydroxypropyltrialkylammonium salts, such as 2-hydroxypropyltrimethylammonium chloride. Commercially available products that meet this definition are, in particular, the products sold by National Starch under the names Celquat® L 200 and Celquat® H 100, polyquaternium-10 (hydroxyethyl cellulose-2-hydroxypropyltrimethylammonium chloride ether), such as the product sold by KCI under the name Polyquta® 400KC, and polyquaternium-6 (polydiallyldimethylammonium chloride), such as the product sold by Nalco under the name Merquat™ 100 polymer. Among these, polyquaternium polymers are particularly preferred, such as polyquaternium-7, 11, 15, 16, 22, 39, 47, 55, 67 and 76.

[0050] The cationic polymer (E) may be present in the composition according to the invention in an amount ranging from 0.01 to 5% by weight, preferably from 0.05 to 1% by weight, or preferably from 0.1 to 0.6% by weight, relative to the total weight of the composition.

[0051] Solubilizer (F) The lipophilically modified silica spherical particles (A) can be incorporated into the composition of the present invention in a water-alcohol system. Therefore, the aqueous phase preferably contains at least one solubilizer (F). For the purpose of sufficient dispersion, the solubilizer is preferably a nonionic surfactant or a mixture thereof, more preferably a solubilizer complex.

[0052] Examples of useful nonionic surfactants are the esters of polyols with fatty acids having saturated or unsaturated chains containing, for example, 8 to 24 carbon atoms, better still 12 to 22 carbon atoms, and their oxyalkylenated derivatives, i.e. derivatives containing oxyethylenated and / or oxypropylenated units, for example C8 to C 24 Glyceryl esters of fatty acids and their oxyalkylenated derivatives; C8-C 24 Polyethylene glycol esters of fatty acids and their oxyalkylenated derivatives; C8-C 24 Sorbitol esters of fatty acids and their oxyalkylenated derivatives; C8-C 24 Sugar (sucrose, glucose, or alkyl glucose) esters of fatty acids and their oxyalkylenated derivatives; ethers of fatty alcohols; C8-C 24 Sugar ethers of fatty alcohols, as well as mixtures thereof, may be included.

[0053] Glyceryl esters of fatty acids that may especially be mentioned include glyceryl stearate (glyceryl monostearate, glyceryl distearate and / or glyceryl tristearate) (CTFA name: glyceryl stearate), glyceryl oleate or glyceryl ricinoleate, and mixtures thereof.

[0054] Polyethylene glycol esters of fatty acids that may especially be mentioned include polyethylene glycol stearates (polyethylene glycol monostearate, polyethylene glycol distearate and / or polyethylene glycol tristearate), especially polyethylene glycol monostearate 50 OE (CTFA name: PEG-50 stearate); and polyethylene glycol monostearate 100 OE (CTFA name: PEG-100 stearate), and mixtures thereof.

[0055] Mixtures of these surfactants may also be used, such as the product containing glyceryl stearate and PEG-100 stearate sold under the name Arlacel® 165 by the company Uniqema, and the product containing glyceryl stearate (glyceryl mono-distearate) and potassium stearate sold under the name Tegin® by the company Goldschmidt (CTFA name: Glyceryl Stearate SE).

[0056] Fatty acid esters of glucose or alkyl glucose that may be mentioned include, in particular, glucose palmitate, alkyl glucose sesquistearate, such as methyl glucose sesquistearate, alkyl glucose palmitates, such as methyl glucose palmitate or ethyl glucose palmitate, fatty esters of methyl glucoside, especially the diester of methyl glucoside with oleic acid (CTFA name: methyl glucose dioleate); mixed esters of methyl glucoside with oleic acid / hydroxystearic acid mixtures (CTFA name: methyl glucose dioleate / hydroxystearic acid); These include esters of methyl glucoside and isostearic acid (CTFA name: methyl glucose isostearate); esters of methyl glucoside and lauric acid (CTFA name: methyl glucose laurate); mixtures of mono- and diesters of methyl glucoside and isostearic acid (CTFA name: methyl glucose sesquiisostearate); mixtures of mono- and diesters of methyl glucoside and stearic acid (CTFA name: methyl glucose sesquistearate), and in particular the product sold under the name Glucate® SS by the company Amerchol, and mixtures thereof.

[0057] Examples of oxyethylenated ethers of fatty acids with glucose or alkylglucose that may be mentioned include oxyethylenated ethers of fatty acids with methylglucose, in particular polyethylene glycol ethers of diesters of methylglucose and stearic acid (CTFA name: PEG-20 methylglucose distearate), containing about 20 mol of ethylene oxide, such as the product sold under the name Glucam® E-20 distearate by Amerchol; polyethylene glycol ethers of mixtures of mono- and diesters of methylglucose and stearic acid, containing about 20 mol of ethylene oxide (CTFA name: PEG-20 methylglucose sesquistearate), in particular the product sold under the name Glucamate® SSE-20 by Amerchol and the product sold under the name Grillocose® PSE-20 by Goldschmidt, and mixtures thereof.

[0058] Examples of sucrose esters that may be mentioned include sucrose palmitostearate, sucrose stearate and sucrose monolaurate.

[0059] Examples of fatty alcohol ethers that may be mentioned include polyethylene glycol ethers of fatty alcohols containing 8 to 30 carbon atoms, in particular 10 to 22 carbon atoms, such as the polyethylene glycol ethers of cetyl alcohol, stearyl alcohol or cetearyl alcohol (mixtures of cetyl and stearyl alcohol).Examples that may be mentioned include ethers containing 1 to 200, preferably 2 to 100, oxyethylene groups, such as the ethers with the CTFA names Ceteareth-20 and Ceteareth-30, and mixtures thereof.

[0060] Sugar ethers that may be mentioned especially are alkylpolyglucosides, such as decyl glucoside, for example the product sold under the name Mydol® 10 by Kao Chemicals, the product sold under the name Plantaren® 2000 by Henkel and the product sold under the name Oramix® NS 10 by SEPPIC; caprylyl / capryl glucoside, for example the product sold under the name Oramix® CG 110 by SEPPIC or the product sold under the name Lutensol® GD 70 by BASF; lauryl glucoside, for example the product sold under the name Plantaren® 1200 by Henkel. N and products sold under the name Plantacare® 1200; cocoglucoside, for example the product sold under the name Plantacare® 818 / UP by the company Henkel; cetostearyl glucoside, optionally in a mixture with cetostearyl alcohol, for example the product sold under the name Montanov® 68 by the company SEPPIC, under the name Tego-Care® CG90 by the company Goldschmidt and under the name Emulgade by the company Henkel arachidyl glucoside, for example in the form of a mixture of arachidyl alcohol, behenyl alcohol and arachidyl glucoside sold under the name Montanov® 202 by the company SEPPIC; cocoyl ethyl glucoside, for example in the form of a mixture of cetyl alcohol and stearyl alcohol (35 / 65) sold under the name Montanov® 82 by the company SEPPIC; and mixtures thereof.

[0061] Polysorbate 20, PEG-60 hydrogenated castor oil may additionally be mentioned as examples of useful solubilizers.

[0062] The solubilizer (F) may be present in the composition according to the invention in an amount of from 0.01% to 5%, for example from 0.05% to 3%, or from 0.1 to 1% (including all ranges and subranges therebetween), based on the total weight of the composition.

[0063] Additional additives According to various embodiments, the compositions of the present invention are provided for application to keratinous materials, such as skin, scalp, or hair. According to these embodiments, the compositions of the present invention can contain various ingredients conventionally useful in compositions for conditioning keratinous materials, such as additional surfactants, including nonionic surfactants, anionic surfactants, and amphoteric surfactants, active ingredients, humectants, additional fatty substances, antidandruff agents, antiseborrheic agents, agents for preventing hair loss and / or promoting hair regrowth, vitamins and provitamins, including panthenol, sunscreens, sequestering agents, plasticizers, acidifying agents, opacifiers, pearlescent or pearlescent agents, antioxidants, hydroxy acids, fragrances, and preservatives.

[0064] A non-exhaustive list of such ingredients can be found in U.S. Patent Application Publication No. 2004 / 0170586, the entire contents of which are incorporated herein by reference. Still further examples of such additional ingredients can be found in the International Cosmetic Ingredient Dictionary and Handbook (9th ed., 2002).

[0065] Those skilled in the art will carefully select optional additional additives and / or amounts thereof so that the advantageous properties of the compositions according to the present invention are not or substantially not adversely affected by the envisaged addition.

[0066] These additives may be variously selected by one skilled in the art to prepare a composition having desired properties, such as consistency or texture, and the additives and their amounts, if any, will depend, inter alia, on the specific product / application, e.g., leave-on conditioner, rinse-off conditioner, skin care conditioner, etc.

[0067] These additives may be present in the composition in an amount of from 0.01% to 50%, based on the total weight of the composition, including all ranges and subranges therebetween.

[0068] Methods and Uses The compositions according to the present invention can generally be prepared according to the general knowledge of those skilled in the art. Nevertheless, it should be understood that those skilled in the art can select a preparation method based on their general knowledge, taking into account the properties of the components used, such as their solubility in the vehicle, and the intended use of the composition or kit.

[0069] According to an embodiment, the composition according to the invention may be used to care for keratinous materials, in particular the scalp, or the scalp and hair together. This use may also manifest as a method for caring for keratinous materials, in particular the skin, scalp and / or hair, comprising a step of applying the composition of the invention to said keratinous materials.

[0070] The composition according to the present invention is preferably useful for formulating a hair conditioner product, a scalp care product, or even a skin care product. Also, according to the above detailed discussion, it should be understood that the composition according to the present invention, and thus the conditioner product and / or shampoo product, may be free of silicone oil.

[0071] The keratin fiber conditioning compositions of the present invention can be used in the form of leave-on products and can be formulated into a wide variety of product forms, including, but not limited to, creams, lotions, gels, emulsions, mousses, and sprays.

[0072] The above-described keratin fiber conditioning composition can be used to condition keratin fibers, such as hair, as well as the scalp, through conventional methods, depending on the application form of the composition.

[0073] For example, when used as a leave-on conditioner after shampooing, the composition of the present invention can be prepared by the following steps: (i) shampooing the hair; and (ii) applying to the hair an amount of the composition effective to condition the hair, without further rinsing the hair. The method can be applied through methods including:

[0074] The present invention is further illustrated by the following examples which set forth particularly advantageous embodiments.

[0075] Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values ​​setting forth the specific examples are reported as precisely as possible. However, any numerical value inherently contains certain errors necessarily resulting from the standard deviation found in their respective measurements. The following examples are intended to illustrate the invention and, as a result, not to limit its scope. [Example]

[0076] The amounts / concentrations of the ingredients in the compositions / formulations below are expressed as % by weight based on the total weight of the respective composition / formulation.

[0077] material Silica silylate 1: AIRLICA® TL-10, available from Tokuyama Corporation, spherical particles of silica modified to be oleophilic Silica Silylate 2: AEROGEL, available from Dow Chemical, free-flowing powder, not spherical particles All other materials not specified here were commercially available.

[0078] Example 1 Composition A, and comparative compositions B, C and D were prepared as shown in Table 1.

[0079] [Table 1]

[0080] Compositions A to D listed above were prepared according to manufacturing methods known in the art.

[0081] Example 2 The effectiveness of the compositions on oil control was determined by a sebum transfer test, which involved the following steps. Step 1: Cleanse hair swatches with standard shampoo, DOP, and wash with test product according to known procedure RC-MCI-OIP-003B. Step 2: Applying 100 μL of colored artificial sebum (red) to a selected 3 cm area in the tip region of the hair swatch. Step 3: The hair sample is hung on an iron stand at 30°C and 50% humidity. Step 4: Taking images of the hair swatches at 1 hour, 2 hours, 4 hours, 6 hours and 24 hours. Step 5: Using image analysis, calculate the total sebum migration area at each time point.

[0082] The sebum transfer results were provided as follows:

[0083] [Table 2]

[0084] In the sebum migration test, a smaller sebum migration area means a greater oil suppression. Therefore, it is clear that the spherical particles of lipophilically modified silica can provide unexpectedly enhanced oil suppression when uniformly dispersed in a medium / solvent, compared to other particles, such as non-spherical particles or non-lipophilically modified silica.

[0085] Example 3 Six volunteers between the ages of 25 and 45 applied Compositions A and B to their hair and scalp daily for three days. A baseline score for sticky or greasy feeling before application of Compositions A and B was recorded, and a daily score for sticky or greasy feeling after application of Compositions A and B was recorded, with the mean differences shown in Table 4.

[0086] Volunteers were asked to rate the oily feel. 0 means no change, 1 means a substantial improvement, 2 means significantly improved, 3 meant virtually no greasy feel.

[0087] The mean scores for the six volunteers were summed for immediate, 24-hour, and 48-hour periods, and daily averages were calculated. The mean scores for a total of three days are provided in Table 3 below.

[0088] [Table 3]

[0089] With reference to Table 3, the lower the score, the less sticky or greasy the feeling. Composition A was observed to provide very good and long-lasting protection against sticky or greasy feeling.

Claims

1. 1. A composition for conditioning keratinous materials, comprising: (A) Spherical particles of lipophilically modified silica uniformly dispersed in a medium / solvent; (B) at least one vehicle / solvent selected from water and alcohol, and (C) at least one conditioning active selected from the group consisting of menthol, ethyl menthane carboxamide, menthyl lactate, menthoxypropanediol, and mixtures thereof; Including, The "spherical particles" means particles having a spherical or at least approximately spherical shape and / or particles having an aspect ratio of 0.9 to 1.1, and the spherical particles (A) of oleophilically modified silica comprise at least one of silica silylate and silica dimethyl silylate. composition.

2. 2. The composition according to claim 1, wherein the spherical particles (A) of lipophilically modified silica are present in an amount ranging from 0.01% to 10% by weight relative to the total weight of the composition.

3. 3. The composition of claim 1, wherein the alcohol is selected from the group consisting of C2 to C10 monoalcohols, C2 to C10 diols, and C3 to C6 polyols containing three or more hydroxyl functional groups.

4. 4. The composition according to claim 1, wherein the medium / solvent (B) comprises both water and alcohol, and wherein water is present in the composition in an amount of 40% to 99% by weight, relative to the weight of the composition, and / or alcohol is present in the composition in an amount of 0.1% to 40% by weight, relative to the weight of the composition.

5. 5. The composition according to claim 1, wherein the conditioning active (C) is present in an amount ranging from 0.001% to 1% by weight, relative to the total weight of the composition.

6. 6. The composition of claim 1, further comprising at least one thickener (D) selected from the group consisting of carboxylic acid polymers, crosslinked polyacrylate polymers, polyacrylamide polymers, polysaccharides, and gums, and mixtures thereof.

7. 7. The composition of claim 6, wherein the at least one thickener (D) is present in the composition in an amount from 0.01% to 5% by weight, based on the total weight of the composition, including all ranges and subranges therebetween.

8. 8. The composition according to claim 1, further comprising at least one cationic polymer (E) selected from the group consisting of cationic cellulose copolymers and cellulose derivatives grafted with water-soluble quaternary ammonium monomers.

9. 9. The composition of claim 8, wherein the cationic polymer (E) is present in the composition in an amount of 0.01 to 5% by weight, based on the weight of the composition, including all ranges and subranges therebetween.

10. 10. The composition of any one of claims 1 to 9, further comprising at least one solubilizer (F) selected from the group consisting of glyceryl esters of C18 to C24 fatty acids and their oxyalkylenated derivatives; polyethylene glycol esters of C8 to C24 fatty acids and their oxyalkylenated derivatives; sorbitol esters of C8 to C24 fatty acids and their oxyalkylenated derivatives; sorbitan esters of C8 to C24 fatty acids and their oxyalkylenated derivatives; sugar esters of C8 to C24 fatty acids and their oxyalkylenated derivatives; fatty alcohol ethers; sugar ethers of C8 to C24 fatty alcohols, and mixtures thereof.

11. 11. The composition of claim 10, wherein the solubilizer (F) is present in the composition in an amount of 0.01% to 5%, by weight of the composition, including all ranges and subranges therebetween.

12. 12. The composition of claim 1, which is free of silicone-based oils.

13. A leave-on keratin substance care product useful for caring for the skin, scalp and / or hair, comprising a composition according to any one of claims 1 to 12.

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