Abstract: The present invention relates to a cosmetic composition comprising: one or more vinylformamide/vinylformamine copolymers comprising: from 10 to 95 mol % of units of formula A and from 90 to 5 mol % of units of formula B, one or more non-ionic fixing polymers, and one or more cationic surfactants. It also relates to the use of this composition for shaping and/or fixing the hairstyle, to a cosmetic treatment process for the hair using same and also to a particular cosmetic set.

Abstract: The invention relates to a cosmetic composition comprising, in a cosmetically acceptable medium: one or more fixing polymer(s) (i), one or more associative polymer(s) (ii) different from the fixing polymer(s), one or more antidandruff agent(s) (iii), and to a process using this composition, and to the use thereof.

Abstract: The present invention relates to a cosmetic composition for treating keratin fibers, especially human keratin fibers such as the hair, comprising in a cosmetically acceptable medium: at least one fixative polymer comprising as monomers at least a vinyl lactam, an ethylenically unsaturated carboxylic acid and an alkyl acrylate or methacrylate whose alkyl moiety contains at least 6 carbon atoms, and at least one partially or fully neutralized sulphonated polymer containing at least one unit derived from a sulpho-functional ethylenically unsaturated monomer.