Dyeing human keratinic materials, especially giving hair metallic highlights, comprises contacting the materials with a cationic surfactant or cationic polymer and applying a (poly)methine dye

摘要

Dyeing human keratinic materials comprises contacting the materials with a composition comprising a cationic surfactant or cationic polymer and applying a composition comprising a (poly)methine dye (I). Dyeing human keratinic materials comprises contacting the materials with a composition comprising a cationic surfactant or cationic polymer and applying a composition comprising a (poly)methine dye of formula (I). X : an optionally substituted 5-membered unsaturated heterocycle with 1-2 N or O atoms or an optionally substituted 6-membered unsaturated heterocycle with 1-2 N atoms and optionally 1-2 CO or CS groups; Y= an optionally substituted 5-membered unsaturated heterocycle with 1-2 N or O atoms or an optionally substituted 6-membered (un)saturated heterocycle with 1-2 N atoms and optionally 1-2 CO or CS groups; R : H, alkali metal or NR' 4; R' : H or 1-4C alkyl. [Image].