Patent ID: 7208019

Claim:
A process for treating human keratin fibres, comprising: a) dyeing the keratin fibers with a dye composition comprising at least one cationic direct dye, said cationic direct dye comprising at least one heterocyclic group; b) optionally washing the dyed keratin fibres with a washing composition (A) comprising at least one anionic detergent surfactant selected from the group consisting of alkyl ether sulfates, alkyl sulfates, and mixtures thereof, rinsing said fibres, and optionally drying said fibres or leaving said fibres to dry; c) washing said fibres that have been dyed with a dye composition comprising at least one cationic direct dye, said cationic direct dye comprising at least one heterocyclic group, with a washing composition (B) comprising at least one nonionic surfactant selected from the group consisting of alkylpolyglucosides, monoglycerolated surfactants, polyglycerolated surfactants, and mixtures thereof, rinsing the fibres washed with washing composition (B), and drying said rinsed fibres or leaving said rinsed fibres to dry.