cosmetic ingredients

Abstract

The present invention provides: a cosmetic composition and a cosmetic method, each of which is capable of promoting penetration of B vitamins or derivatives thereof into the skin; and a polymer which is suitable for use as a percutaneous penetration promoter for B vitamins or derivatives thereof.　A cosmetic composition which contains B vitamins or derivatives thereof and a polymer that serves as a percutaneous penetration promoter for B vitamins or derivatives thereof, the polymer having a repeating unit represented by formula (I). (In the formula, each of R1, R2, R3, R4 and R5 independently represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms; and M represents a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, an earth metal atom or an ammonium.)

Description

[Technical Field]

[0001] The present invention relates to a cosmetic composition, and in particular to a cosmetic composition containing B vitamins or derivatives thereof. [Background technology]

[0002] In recent years, extensive research has been conducted into skin beauty, such as whitening, wrinkle prevention and improvement, and improvement of rough skin. For example, many cosmetic compositions containing B vitamins or their derivatives have been developed.

[0003] Among B vitamins or their derivatives, for example, niacinamide has attracted attention as a cosmetic active ingredient that combines whitening and anti-wrinkle effects (e.g., wrinkle prevention and wrinkle improvement effects). When a cosmetic composition containing such B vitamins or their derivatives is applied to the skin, it is desired to allow the B vitamins or their derivatives to penetrate deeply into the skin, thereby enhancing the cosmetic effect.

[0004] For example, Patent Document 1 discloses a cosmetic composition suitable for topical application that enhances the permeability of active ingredients into the skin and extends the residence time of the active ingredients in the skin, the cosmetic composition comprising: i) glycerin; ii) a lipid bilayer structuring agent having a glyceryl head group; iii) a penetration enhancer; and iv) a skin care active ingredient.

[0005] On the other hand, as mentioned in Patent Document 1, various skin penetration enhancers are known, but their mechanisms of action, particularly in the stratum corneum, are still under investigation, making it difficult to rationally select a penetration enhancer for a given permeating substance. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Special Publication No. 2017-500322 Summary of the Invention [Problem to be solved by the invention]

[0007] Although the effects of specific individual ingredients on skin penetration have been studied to some extent, the penetration of cosmetic active ingredients into the skin is still largely unknown. For this reason, there is still much research to be done on how to enhance the cosmetic effects of, for example, B vitamins or their derivatives as cosmetic active ingredients by increasing their penetration into the skin.

[0008] The present invention aims to improve the above-mentioned circumstances, and its object is to provide a cosmetic composition and cosmetic method that can enhance the permeation of B vitamins or their derivatives into the skin, as well as a polymer suitable for use as a transdermal penetration enhancer for B vitamins or their derivatives. [Means for solving the problem]

[0009] The present invention that achieves the above object is as follows.

[0010] <Aspect 1> B vitamins or their derivatives, a polymer having a repeating unit represented by the following formula (I) as a transdermal penetration enhancer for the B vitamins or derivatives thereof; Cosmetic composition containing: [ka] (wherein R1, R2, R3, R4, and R5 each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and M represents a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, an earth metal atom, or ammonium). <Aspect 2> In the formula (I), R1, R4, and R5 are hydrogen atoms, R2 and R3 are methyl groups, and M is a hydrogen atom, a sodium atom, or ammonium; A cosmetic composition according to embodiment 1. <Aspect 3> 3. The cosmetic composition according to aspect 1 or 2, wherein the B vitamins or derivatives thereof are niacinamide. <Aspect 4> The polymer may be (ammonium acryloyldimethyltaurate / vinylpyrrolidone) copolymer, (dimethylacrylamide / sodium acryloyldimethyltaurate) crosspolymer, (ammonium acryloyldimethyltaurate / beheneth-25 methacrylate) crosspolymer, (sodium acrylate / sodium acryloyldimethyltaurate) copolymer, polysodium acryloyldimethyltaurate, (ammonium acryloyldimethyltaurate / steareth-25 methacrylate) crosspolymer, polyammonium acryloyldimethyltaurate, (2-hydroxyethyl acrylate / sodium acryloyldimethyltaurate / steareth-20 methacrylate) copolymer, (acrylamide / sodium acryloyldimethyltaurate) copolymer, (sodium acrylate / acryloyldimethyltaurate / dimethylacrylamide) crosspolymer. Aspect 4. The cosmetic composition according to any one of aspects 1 to 3, comprising at least one selected from the group consisting of a hydroxyethyl acrylate / sodium acryloyldimethyltaurate copolymer, a sodium acrylate / sodium acryloyldimethyltaurate / acrylamide copolymer, a sodium acryloyldimethyltaurate / PEG-8 diacrylate crosspolymer, a sodium acryloyldimethyltaurate / methacrylamidolaurate copolymer, an ammonium acryloyldimethyltaurate / carboxyethylammonium acrylate crosspolymer, an ammonium acryloyldimethyltaurate / steareth-8 methacrylate copolymer, an ammonium acryloyldimethyltaurate / laureth-7 methacrylate copolymer, and a sodium acryloyldimethyltaurate / vinylpyrrolidone crosspolymer. <Aspect 5> A cosmetic composition according to any one of aspects 1 to 4, wherein the weight ratio of the B vitamins or derivatives thereof to the polymer (B vitamins or derivatives thereof:polymer) is 100:1 to 1:1. <Aspect 6> A cosmetic composition according to any one of Aspects 1 to 5, further comprising a cosmetically acceptable base. <Aspect 7> A cosmetic composition according to any one of Aspects 1 to 6, which is for topical application. <Aspect 8> A cosmetic method comprising applying the cosmetic composition according to any one of aspects 1 to 7 to the skin. <Aspect 9> Use of a polymer having a repeating unit represented by the following formula (I) as a percutaneous penetration enhancer for B vitamins or derivatives thereof: [ka] (wherein R1, R2, R3, R4, and R5 each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and M represents a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, an earth metal atom, or ammonium). <Aspect 10> In the formula (I), R1, R4, and R5 are hydrogen atoms, R2 and R3 are methyl groups, and M is a hydrogen atom, a sodium atom, or ammonium; 10. The use according to embodiment 9. <Aspect 11> The B vitamins or derivatives thereof are niacinamide, and the polymer comprises at least one selected from the group consisting of (ammonium acryloyldimethyltaurate / vinylpyrrolidone) copolymer, (dimethylacrylamide / sodium acryloyldimethyltaurate) crosspolymer, (ammonium acryloyldimethyltaurate / beheneth-25 methacrylate) crosspolymer, and (sodium acrylate / sodium acryloyldimethyltaurate) copolymer; 11. The use according to aspect 9 or 10. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide a cosmetic composition and cosmetic method that can enhance the permeation of B vitamins or derivatives thereof into the skin, as well as a polymer that is suitable for use as a transdermal penetration enhancer for B vitamins or derivatives thereof. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a graph showing the transdermal permeation rates of niacinamide in Examples 1 to 4 and Comparative Example 1. [Figure 2] FIG. 2 is a graph showing the transdermal permeation rates of niacinamide in Examples 5 to 8 and Comparative Example 1. DETAILED DESCRIPTION OF THE INVENTION

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the preferred embodiments. However, the present invention is not limited to the following embodiments, and various modifications can be made within the scope of the present invention.

[0014] 《Beauty composition》 The cosmetic composition of the present invention comprises: B vitamins or their derivatives, A polymer having a repeating unit represented by the following formula (I) as a transdermal penetration enhancer for B vitamins or derivatives thereof: A cosmetic composition comprising: [ka] (wherein R1, R2, R3, R4, and R5 each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and M represents a hydrogen atom, an alkali metal atom, an earth metal atom, an alkaline earth metal atom, or ammonium).

[0015] According to intensive research by the present inventors, it has been found that a polymer having a repeating unit represented by the above formula (I) acts as a transdermal penetration enhancer for B vitamins or derivatives thereof.

[0016] In the present invention, B vitamins or derivatives thereof are cosmetic active ingredients. More specifically, B vitamins or derivatives thereof include one or more compounds selected from the group consisting of vitamin B1, vitamin B2, vitamin B3 (also called "niacin"), vitamin B5, vitamin B6, or vitamin B12, or derivatives thereof, and particularly preferably vitamin B3, also called "niacin," or its derivatives. Note that "niacin" includes nicotinic acid and niacinamide (also called "nicotinamide").

[0017] Here, from the viewpoint that niacinamide has both whitening effect and anti-wrinkle effect, the B vitamins or derivatives thereof according to the present invention are preferably niacinamide, the structure of which is shown in the following formula (II):

[0018] [ka]

[0019] In the cosmetic composition of the present invention, the content of B vitamins or derivatives thereof is not particularly limited as long as it is an amount that exhibits a cosmetic effect on the skin, and may be, for example, 0.001% by mass or more, 0.005% by mass or more, 0.01% by mass or more, 0.05% by mass or more, 0.1% by mass or more, 0.5% by mass or more, 1.0% by mass or more, 2.0% by mass or more, 3.0% by mass or more, 4.0% by mass or more, or 5.0% by mass or more, relative to the total amount (100% by mass) of the composition, or 20% by mass or less, 15% by mass or less, 10% by mass or less, 8.0% by mass or less, or 5.0% by mass or less.

[0020] <Transdermal penetration enhancer> In the present invention, the term "percutaneous penetration enhancer" refers to a substance that improves the skin permeability of a medicinal ingredient, with the aim of enhancing the efficacy of the medicinal ingredient applied to the skin. Here, the "specific substance" may be, for example, a cosmetic active ingredient, more specifically, the B vitamins or derivatives thereof according to the present invention, such as niacinamide.

[0021] (Polymer of the present invention) In the cosmetic composition of the present invention, the polymer having a repeating unit represented by the following formula (I) (hereinafter also simply referred to as the "polymer of the present invention") can act as a transdermal penetration enhancer for B vitamins or derivatives thereof.

[0022] [ka] (In the formula, R1, R2, R3, R4, and R5 each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and M represents a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, an earth metal atom, or ammonium.)

[0023] In formula (I), R1, R2, R3, R4, and R5 may each independently represent a hydrogen atom (H) or an alkyl group having 1 to 3 carbon atoms. More specifically, R1, R4, and R5 may represent a hydrogen atom, and R2 and R3 may represent a methyl group (—CH3).

[0024] In addition, in formula (I), -SO3M may be sulfonic acid or a sulfonate. Specifically, M may be a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, an earth metal atom, or ammonium (NH4). Here, examples of alkali metal atoms include sodium atom (Na) and potassium atom (K). Examples of alkaline earth metal atoms include magnesium atom (Mg) and calcium atom (Ca). Examples of earth metal atoms include aluminum atom (Al). Of these, M may be, for example, a hydrogen atom, sodium atom, or ammonium.

[0025] The polymers of the present invention may be water-soluble polymers, in particular anionic water-soluble polymers.

[0026] The polymers of the present invention may be homopolymers having repeating units represented by formula (I) above, or may be copolymers or crosspolymers having repeating units represented by formula (I) above.

[0027] When the polymer of the present invention is a copolymer or crosspolymer, examples of other copolymerization components that can constitute the copolymer or crosspolymer together with the repeating unit represented by formula (I) include, but are not limited to, N-vinylpyrrolidone, sodium or ammonium salts of acrylic acid or methacrylic acid, acrylamide, dimethylacrylamide, hydroxyethyl acrylate, methacrylamide laurate, carboxyethylammonium acrylate, 2-hydroxyethyl acrylate, beheneth-25 methacrylate, steareth-25 methacrylate, steareth-20 methacrylate, PEG-8 diacrylate, steareth-8 methacrylate, laureth-7 methacrylate, etc. When the polymer of the present invention is a copolymer or crosspolymer, the repeating unit represented by formula (I) may account for, for example, 10 mol% or more, 20 mol% or more, 50 mol% or more, 80 mol% or more, or 95 mol% or more of the entire polymer, or may be less than 100 mol%, 99 mol% or less, or 98 mol% or less.

[0028] More specifically, the polymer of the present invention is (ammonium acryloyldimethyltaurate / vinylpyrrolidone) copolymer, (dimethylacrylamide / sodium acryloyldimethyltaurate) crosspolymer, (ammonium acryloyldimethyltaurate / beheneth-25 methacrylate) crosspolymer, (sodium acrylate / sodium acryloyldimethyltaurate) copolymer, polysodium acryloyldimethyltaurate, (ammonium acryloyldimethyltaurate / steareth-25 methacrylate) crosspolymer, polyammonium acryloyldimethyltaurate, (2-hydroxyethyl acrylate / sodium acryloyldimethyltaurate / steareth-20 methacrylate) copolymer, (acrylamide / sodium acryloyldimethyltaurate) copolymer, (sodium acrylate / acryloyldimethyltaurate) The composition may comprise at least one selected from the group consisting of (sodium acrylate / sodium acryloyldimethyltaurate / acrylamide) crosspolymer, (sodium acrylate / sodium acryloyldimethyltaurate / acrylamide) copolymer, (hydroxyethyl acrylate / sodium acryloyldimethyltaurate) copolymer, (sodium acryloyldimethyltaurate / PEG-8 diacrylate) crosspolymer, (sodium acryloyldimethyltaurate / methacrylamidolaurate) copolymer, (ammonium acryloyldimethyltaurate / carboxyethylammonium acrylate) crosspolymer, (ammonium acryloyldimethyltaurate / steareth-8 methacrylate) copolymer, (ammonium acryloyldimethyltaurate / laureth-7 methacrylate) copolymer, and (sodium acryloyldimethyltaurate / vinylpyrrolidone) crosspolymer. These polymers may be synthetically obtained or commercially available. In the case of commercially available polymers, other solvents, additives, etc. may be present in the commercially available polymers as long as they do not impair the effects of the present invention.

[0029] In the cosmetic composition of the present invention, the content of the polymer of the present invention is not particularly limited as long as it is an amount that can act as a transdermal penetration enhancer for B vitamins or derivatives thereof, and may be, for example, 0.001% by mass or more, 0.005% by mass or more, 0.01% by mass or more, 0.05% by mass or more, 0.1% by mass or more, 0.2% by mass or more, 0.3% by mass or more, 0.4% by mass or more, 0.5% by mass or more, 0.6% by mass or more, 0.7% by mass or more, 0.8% by mass or more, or 0.9% by mass or more, relative to the total amount (100% by mass) of the composition, or 5.0% by mass or less, 4.0% by mass or less, 3.0% by mass or less, 2.0% by mass or less, or 1.0% by mass or less.

[0030] In the cosmetic composition of the present invention, the weight ratio of B vitamins or derivatives thereof to the polymer of the present invention (B vitamins or derivatives thereof:polymer of the present invention) may be in the range of 100:1 to 1:1, or 100:5 to 100:50, 100:5 to 100:20, or 100:5 to 100:15.

[0031] (Uses of the polymer of the present invention) The polymer of the present invention described above can also be used as a general thickener for cosmetics. In contrast, the present inventors have found that the use of the polymer of the present invention together with B vitamins or derivatives thereof can promote the penetration of the B vitamins or derivatives thereof into the skin.

[0032] <Cosmetic acceptable bases> The cosmetic composition of the present invention may further comprise a cosmetically acceptable base, which may act as a diluent, dispersant or carrier for other ingredients present in the composition, facilitating their distribution when the composition is applied to the skin.

[0033] The cosmetically acceptable base may be comprised of ingredients including fatty acids having 10 to 30 carbon atoms and their salts, water, liquid or solid emollients, solvents, humectants, thickeners, and powders. These ingredients may be used alone or in mixtures thereof to form the cosmetically acceptable base.

[0034] Examples of fatty acids that can be used in cosmetically acceptable bases include fatty acids having 10 to 30 carbon atoms and may include pelargonic acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, oleic acid, linoleic acid, arachidic acid, behenic acid, or erucic acid, and derivatives thereof, and mixtures thereof. Examples of salts of fatty acids may include potassium stearate.

[0035] Examples of emollients that may be used in a cosmetically acceptable base include stearyl alcohol, glyceryl monoricinoleate, mink oil, cetyl alcohol, isopropyl isostearate, stearic acid, isobutyl palmitate, isocetyl stearate, oleyl alcohol, isopropyl laurate, hexyl laurate, decyl oleate, octadecane-2-ol, isocetyl alcohol, eicosanyl alcohol, behenyl alcohol, cetyl palmitate, silicone oils such as dimethylpolysiloxane, di-n-butyl sebacate, isopropyl myristate, palm oil, and the like. These may include isopropyl myristate, isopropyl stearate, butyl stearate, polyethylene glycol, triethylene glycol, lanolin, cocoa butter, corn oil, cottonseed oil, olive oil, palm kernel oil, rapeseed oil, safflower seed oil, evening primrose oil, soybean oil, sunflower oil, avocado oil, sesame oil, coconut oil, peanut oil, castor oil, acetylated lanolin alcohol, petrolatum, mineral oil, butyl myristate, isostearic acid, palmitic acid, isopropyl linoleate, lauryl lactate, myristyl lactate, decyl oleate, myristyl myristate, and mixtures thereof.

[0036] Examples of powders that can be used in a cosmetically acceptable base may include chalk, talc, fuller's earth, kaolin, starch, gums, colloidal silica sodium polyacrylate, tetraalkyl and / or trialkylarylammonium smectite, chemically modified magnesium aluminum silicate, organically modified montmorillonite clay, hydrated aluminum silicate, fumed silica, carboxyvinyl polymer, sodium carboxymethylcellulose, and ethylene glycol monostearate.

[0037] When the cosmetic composition of the present invention further contains a cosmetically acceptable base, the content thereof is not particularly limited and may be, for example, 5.0 to 99.5% by mass, 20 to 80% by mass, or 30 to 75% by mass relative to the total amount of the composition (100% by mass).

[0038] <Other ingredients> The cosmetic composition of the present invention may further contain other ingredients in addition to those described above. Examples of other ingredients include, but are not limited to, skin whitening agents, sunscreens, surfactants, antioxidants, binders, biological additives, buffers, colorants, polymers, astringents, fragrances, opacifiers, conditioners, exfoliants, pH adjusters, preservatives, natural extracts, skin sensates, skin smoothing agents, and skin healing agents. Furthermore, when these other ingredients are included, the content of each ingredient is not particularly limited, and may be any amount acceptable for cosmetics.

[0039] <Form of composition> The cosmetic composition of the present invention may be for topical application to the skin, and thus may take the form of, for example, a lotion, cream, gel, mask, or mousse, but is not limited to these.

[0040] 《Beauty method》 The cosmetic method of the invention comprises applying the above-described cosmetic composition of the invention to the skin.

[0041] According to the cosmetic method of the present invention, it is possible to promote the penetration of B vitamins or derivatives thereof as a cosmetic active ingredient into the skin. [Example]

[0042] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these. Unless otherwise specified, the numerical values ​​in the tables below represent the blending amounts of each component, and the units are % by mass.

[0043] Examples 1 to 8 and Comparative Example 1 Compositions of Examples 1 to 8 and Comparative Example 1 were prepared based on the formulations in Tables 1 and 2, and the transdermal penetration of the B vitamins or derivatives thereof contained in each composition was evaluated.

[0044] In Table 1, the structural formula of the (acryloyldimethyltaurate ammonium / vinylpyrrolidone) copolymer used as the transdermal penetration enhancer is as follows (trade name: Aristoflex AVC, manufactured by Clariant):

[0045] [ka]

[0046] In Table 1, the structural formula of the (acryloyldimethyltaurate ammonium / beheneth-25 methacrylate) crosspolymer used as the transdermal penetration enhancer is as follows (l:m = 95:5 to 98:2 (molar ratio), product name: Aristoflex HMB, manufactured by Clariant):

[0047] [ka]

[0048] In Table 2, the structural formula of the (dimethylacrylamide / sodium acryloyldimethyltaurate) crosspolymer used as the transdermal penetration enhancer is as follows (a:b:c=80:20:0.1 (molar ratio)):

[0049] [ka]

[0050] In Table 2, the structural formula of the (sodium acrylate / sodium acryloyldimethyltaurate) copolymer is as follows (trade name: SIMULGEL EG, manufactured by Seppic):

[0051] [ka]

[0052] [Table 1]

[0053] [Table 2]

[0054] "evaluation" (Evaluation method) Franz diffusion cell (effective permeation area: 0.79 cm) 2 The receiver cell of the 1000-ml PET bottle was filled with 7.5 mL of phosphate-buffered saline (also abbreviated as "PBS"), and a skin substitute membrane (Strat-M (registered trademark) (Merck)) was placed between the cells and the surface temperature was adjusted to 32°C. Strat-M (registered trademark) is a skin substitute membrane that is widely used to evaluate skin permeability by passive diffusion.

[0055] After hydrating the skin substitute membrane, 10 μL / cm 2 The cosmetic composition of each Example and Comparative Example was applied to the donor cell side in a volume of 100 ml and spread over 30 seconds with a spatula.

[0056] Then, 1, 2, 3, 4, 6, and 8 hours after application of each cosmetic composition, 0.3 mL of the receiver solution was sampled and replenished with the same amount of PBS.

[0057] The sampled receiver was quantified by HPLC to determine the amount of niacinamide permeated over time in each of the cosmetic compositions of Examples and Comparative Examples. The permeation rate (%) of niacinamide was calculated from the obtained permeation amount using the following formula 1: Percutaneous penetration rate of NA (%) = (amount of NA penetrated / amount of NA applied) × 100% (Note that "NA" stands for niacinamide.)

[0058] The transdermal permeability of niacinamide in Examples 1 to 4 and Comparative Example 1 is shown in FIG. 1, and the transdermal permeability of niacinamide in Examples 5 to 8 and Comparative Example 1 is shown in FIG.

[0059] (Evaluation results) As is clear from Figures 1 and 2, the cosmetic compositions of Examples 1 to 8 all showed enhanced penetration of niacinamide (vitamin B group or a derivative thereof) into the skin compared to the cosmetic composition of Comparative Example 1 (a composition that did not contain a transdermal penetration enhancer for vitamin B group or a derivative thereof).

[0060] This is believed to be due to the use of the polymer of the present invention as a transdermal penetration enhancer for B vitamins or their derivatives in the cosmetic compositions of Examples 1 to 8. In other words, it was suggested that the polymer of the present invention can be used as a transdermal penetration enhancer for B vitamins or their derivatives.

[0061] Comparative Examples 2 to 5 In Comparative Examples 2 to 5, when a low molecular weight compound having a methyltaurine group was blended into a cosmetic composition instead of the polymer of the present invention, the transdermal penetration of B vitamins or their derivatives after 1, 2, 3, 4, 6, and 8 hours was evaluated in the same manner as described above.

[0062] The formulations of the cosmetic compositions of Comparative Examples 2 to 5 are shown in Table 3 below.

[0063] [Table 3]

[0064] As a result, none of the cosmetic compositions of Comparative Examples 2 to 5 exhibited any effect of enhancing the transdermal penetration of niacinamide (vitamin B group or derivatives thereof).

Claims

1. Use of a polymer having a repeating unit represented by the following formula (I) as a percutaneous penetration enhancer for B vitamins or derivatives thereof: 【Chemistry 1】 (In the formula, R １ , R ２ , R ３ , R ４ , and R ５ are each independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and M is a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, an earth metal atom, or ammonium.

2. In the formula (I), R １ , R ４ , and R ５ is a hydrogen atom, R ２ and R ３ is a methyl group, and M is a hydrogen atom, a sodium atom, or ammonium; 2. The use according to claim 1.

3. The B vitamins or derivatives thereof are niacinamide, and the polymer comprises at least one selected from the group consisting of ammonium acryloyldimethyltaurate / vinylpyrrolidone copolymer, dimethylacrylamide / sodium acryloyldimethyltaurate crosspolymer, ammonium acryloyldimethyltaurate / beheneth-25 methacrylate crosspolymer, and sodium acrylate / sodium acryloyldimethyltaurate copolymer; 3. Use according to claim 1 or 2.

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