Product for keratin-containing fibers, containing at least a specific copolymer of the N-vinylpyrrolidone and at least a polymer with structural units derived from maleic acid ester
Agents for treating keratin-containing fibers, in particular human hair, and methods for the use of such agents are provided. The agent includes at least one copolymer (a) and at least one copolymer (b). The copolymer (a) includes at least one structural unit of a formula (I) and at least one structural unit of a formula (II). Copolymer (b) includes at least one structure unit of formula (AI) and at least one structural unit of formula (A2). The agent is contained in a cosmetically acceptable carrier.
