A cosmetic agent containing, in a cosmetically acceptable carrier, a) at least one copolymer A having at least one structural unit, at least one structural unit, at least one structural unit and at least one structural unit, where - R1 represents an optionally heterofunctionalized alkyl group; - R2 represents an optionally heterofunctionalized alkyl group that is different from R1; - R3 represents, independently, an optionally heterofunctionalized alkyl group that is different from R1 and R2, wherein the proportion by weight of copolymer A with respect to the total weight of the agent is from 0.05 to 10% wt.%, b) at least one copolymer B which is different from copolymer A and consists entirely of one structural unit where R4 represents an optionally heterofunctionalized alkyl group and the proportion by weight of copolymer B with respect to the total weight of the agent is from 0.05 to 10 wt.%; and c) at least one copolymer C which is different from copolymer A and copolymer B and is formed by - at least two monomers C1, wherein the first monomer is selected from acrylic acid, methacrylic acid, acrylic acid methyl ester, methacrylic acid methyl ester, acrylic acid ethyl ester, methacrylic acid ethyl ester, acrylic acid propyl ester, methacrylic acid propyl ester, acrylic acid isopropyl ester and methacrylic acid isopropyl ester, and the second monomer is selected from acrylic acid stearyl ester and methacrylic acid stearyl ester, and - methacryloylethylamine oxide as a monomer C2, wherein the proportion by weight of copolymer C with respect to the total weight of the agent is from 0.1 to 8.0. a) at least one copolymer A having at least one structural unit, at least one structural unit, at least one structural unit and at least one structural unit, where - R1 represents an optionally heterofunctionalized alkyl group; - R2 represents an optionally heterofunctionalized alkyl group that is different from R1; - R3 represents, independently, an optionally heterofunctionalized alkyl group that is different from R1 and R2, wherein the proportion by weight of copolymer A with respect to the total weight of the agent is from 0.05 to 10% wt.%, - R1 represents an optionally heterofunctionalized alkyl group; - R2 represents an optionally heterofunctionalized alkyl group that is different from R1; - R3 represents, independently, an optionally heterofunctionalized alkyl group that is different from R1 and R2, wherein the proportion by weight of copolymer A with respect to the total weight of the agent is from 0.05 to 10% wt.%, b) at least one copolymer B which is different from copolymer A and consists entirely of one structural unit where R4 represents an optionally heterofunctionalized alkyl group and the proportion by weight of copolymer B with respect to the total weight of the agent is from 0.05 to 10 wt.%; and c) at least one copolymer C which is different from copolymer A and copolymer B and is formed by - at least two monomers C1, wherein the first monomer is selected from acrylic acid, methacrylic acid, acrylic acid methyl ester, methacrylic acid methyl ester, acrylic acid ethyl ester, methacrylic acid ethyl ester, acrylic acid propyl ester, methacrylic acid propyl ester, acrylic acid isopropyl ester and methacrylic acid isopropyl ester, and the second monomer is selected from acrylic acid stearyl ester and methacrylic acid stearyl ester, and - methacryloylethylamine oxide as a monomer C2, wherein the proportion by weight of copolymer C with respect to the total weight of the agent is from 0.1 to 8.0. - at least two monomers C1, wherein the first monomer is selected from acrylic acid, methacrylic acid, acrylic acid methyl ester, methacrylic acid methyl ester, acrylic acid ethyl ester, methacrylic acid ethyl ester, acrylic acid propyl ester, methacrylic acid propyl ester, acrylic acid isopropyl ester and methacrylic acid isopropyl ester, and the second monomer is selected from acrylic acid stearyl ester and methacrylic acid stearyl ester, and - methacryloylethylamine oxide as a monomer C2, wherein the proportion by weight of copolymer C with respect to the total weight of the agent is from 0.1 to 8.0.