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CN-122028905-A - Composition for conditioning keratin fibres

CN122028905ACN 122028905 ACN122028905 ACN 122028905ACN-122028905-A

Abstract

Relates to a composition for conditioning keratin fibres, comprising a) spherical particles of at least one lipophilic modified silica, b) at least one superabsorbent polymer chosen from starches grafted with acrylic polymers, c) at least one salt of polyacrylic acid, and d) at least one volatile solvent chosen from alcohols. Also relates to a cosmetic method for conditioning keratin fibres, comprising the application of the composition to the keratin fibres.

Inventors

  • CHEN XIAO
  • WANG XIUXIA

Assignees

  • 莱雅公司

Dates

Publication Date
20260512
Application Date
20231025

Claims (14)

  1. 1. A composition for conditioning keratin fibers comprising: a) Spherical particles of at least one lipophilic modified silica; b) At least one superabsorbent polymer selected from starches grafted with acrylic acid polymers; c) At least one salt of polyacrylic acid, and D) At least one volatile solvent selected from alcohols.
  2. 2. The composition of claim 1, wherein the lipophilically modified silica is selected from the group consisting of silica treated with a silicone compound, preferably selected from the group consisting of silylated silica, dimethylsilylated silica, and mixtures thereof.
  3. 3. The composition according to claim 1 or 2, wherein the spherical particles of the lipophilic modified silica are present in an amount ranging from 0.01 to 5 wt%, preferably ranging from 0.3 to 2.5 wt%, more preferably ranging from 0.5 to 1.5 wt%, relative to the total weight of the composition.
  4. 4. A composition according to any of claims 1-3, wherein the superabsorbent polymer is selected from starches grafted with acrylic acid homo-or copolymers, in particular starches grafted with sodium polyacrylate.
  5. 5. The composition of any of claims 1-4, wherein the superabsorbent polymer is present in an amount ranging from 0.01 wt.% to 5 wt.%, preferably ranging from 0.1 wt.% to 3 wt.%, more preferably ranging from 0.1 wt.% to 1 wt.%, most preferably ranging from 0.2 wt.% to 0.8 wt.%, relative to the total weight of the composition.
  6. 6. The composition according to any one of claims 1-5, wherein the salt of polyacrylic acid is selected from the group consisting of metal salts of polyacrylic acid, preferably the salt of polyacrylic acid is selected from the group consisting of sodium, potassium, lithium and ammonium salts of polyacrylic acid, more preferably the salt of polyacrylic acid is sodium polyacrylate.
  7. 7. The composition of any of claims 1-6, wherein the salt of polyacrylic acid is present in an amount ranging from 0.01 wt% to 5 wt%, preferably ranging from 0.1 wt% to 3 wt%, more preferably ranging from 0.1 wt% to 1 wt%, most preferably ranging from 0.2 wt% to 0.8 wt%, relative to the total weight of the composition.
  8. 8. The composition of any of claims 1-7, wherein the weight ratio of the superabsorbent polymer to the salt of polyacrylic acid is from 1:4 to 4:1.
  9. 9. The composition according to any one of claims 1-8, wherein the volatile solvent is selected from C2-C5 monohydric alcohols, preferably selected from ethanol, isopropanol, butanol, butan-2-ol, methylpropan-1-ol, methylpropan-2-ol, and mixtures thereof, more preferably the volatile solvent is ethanol.
  10. 10. The composition according to any one of claims 1-9, wherein the volatile solvent selected from alcohols is present in an amount ranging from 0.1 to 50 wt%, preferably ranging from 1 to 45 wt%, more preferably ranging from 5 to 40 wt%, even more preferably ranging from 10 to 40 wt%, relative to the total weight of the composition.
  11. 11. The composition of any one of claims 1-10, further comprising water.
  12. 12. The composition according to claim 11, wherein water is preferably present in an amount ranging from 50 to 99 wt%, preferably from 60 to 99 wt%, relative to the total weight of the composition.
  13. 13. The composition of claim 1, comprising, relative to the total weight of the composition: a) Spherical particles of 0.5 to 1.5 weight percent of silylated silica; b) 0.2 to 0.8% by weight of starch grafted with sodium polyacrylate; c) 0.2 to 0.8% by weight of sodium polyacrylate, and D) 10 to 40% by weight of ethanol.
  14. 14. A cosmetic process for conditioning keratin fibres, comprising the application to the keratin fibres of a composition as defined in any one of claims 1 to 13.

Description

Composition for conditioning keratin fibres Technical Field The present invention relates to a composition for conditioning keratin fibres, in particular human keratin fibres such as the hair. The invention also relates to a cosmetic method for conditioning keratin fibres. Background In some cases, such as under sun exposure, keratin fibers, such as skin and scalp, may sweat, resulting in sebum secretion. Excessive sebum secretion from the scalp makes the hair greasy and impairs its appearance, for example its full appearance. In addition, the presence of sebum reduces perceived freshness on the scalp. Oily scalp is the second biggest problem in hair and scalp problems, especially in chinese consumers. There are many products developed to solve the problems caused by excess sebum. For example, US5137715A discloses a hair shampoo-conditioner composition consisting essentially of (a) from about 1% to about 20% by weight of an anionic cleansing surfactant, (b) from about 0.1% to about 2.5% by weight of a substantially uncrosslinked polymeric amidoamine, and (c) a suitable carrier comprising water, wherein the composition has a pH in the range of from about 2.5 to less than 7. However, many products on the market are ineffective against excess sebum, so that they do not give the hair a full appearance. It is therefore desirable to have a solution that is effective against excess sebum that reduces problems caused by heavy sebum and gives the hair a fuller appearance. Disclosure of Invention It is therefore an object of the present invention to develop a composition for conditioning keratin fibres which reduces the problems caused by heavy sebum and gives the hair a plump appearance. Thus, according to a first aspect, the present invention provides a composition for conditioning keratin fibres, comprising: a) Spherical particles of at least one lipophilic modified silica; b) At least one superabsorbent polymer selected from starches grafted with acrylic acid polymers; c) At least one salt of polyacrylic acid, and D) At least one volatile solvent selected from alcohols. According to a second aspect, the present invention provides a cosmetic method for conditioning keratin fibres, comprising the application to said keratin fibres of a composition according to the invention. The inventors have found that the composition according to the invention is effective against sebum and gives hair volume. Other subjects and features, aspects and advantages of the present invention will become even more apparent upon reading the following detailed description and examples. Detailed Description As used herein, unless otherwise indicated, the limits of the numerical ranges are included in the ranges, particularly in the expressions "between. As used herein, the term "comprising/including" is to be interpreted as encompassing all the specifically mentioned features as well as optional, additional, unspecified features. As used herein, use of the term "comprising" also discloses embodiments in which no feature other than the specifically mentioned feature is present (i.e. "consisting of"). Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The definitions set forth herein should be applicable when the definitions of terms in this specification conflict with the meaning commonly understood by those skilled in the art to which this invention pertains. Unless otherwise indicated, all numbers expressing quantities of ingredients and the like used in the specification and claims are to be understood as being modified by the term "about". Accordingly, unless indicated to the contrary, the numerical values and parameters set forth herein are approximations that can vary depending upon the desired properties to be obtained. As used herein, the term "keratin fibers" includes human keratin fibers, especially hair. As used herein, the expression "at least one" is equivalent to the expression "one or more". According to a first aspect, the composition of the invention comprises: a) Spherical particles of at least one lipophilic modified silica; b) At least one superabsorbent polymer selected from starches grafted with acrylic acid polymers; c) At least one salt of polyacrylic acid, and D) At least one volatile solvent selected from alcohols. Spherical particles of lipophilically modified silica The composition of the invention comprises spherical particles of at least one lipophilic modified silica. As used herein, "spherical particles" refers to particles that are spherical or at least approximately spherical in shape, and/or particles that have an aspect ratio of about 0.9 to 1.1, for example about 0.95 to 1.05. For example, one skilled in the art can determine whether the particles are in the shape of spheres based on conventional knowledge. In particular, for a given silica, it is within the routine skil