| abstract |
The present invention relates to a method for dyeing keratin material, in particular human hair, comprising the steps of: - applying to the keratin material an agent (a) comprising: (a1) at least one an organosilicon compound selected from the group consisting of silanes having one, two or three silicon atoms, and - applying an agent (b) to a keratin material, wherein the agent (b) comprises: (b1) at least one comprising a copolymer film-forming polymers of compounds having at least one structural unit of formula (i) and at least one structural unit of formula (ii), wherein R 1 represents a (C 1 to C 18 ) alkyl group, and M 1 and M 2 independently represent a hydrogen atom, a (C 1 to C 6 ) alkyl group or an equivalent of a monovalent or polyvalent cation, and (b2) at least one first chromophoric compound selected from pigments and/or direct dyes . |