abstract |
<UM> AGENTS FOR DYING KERATIN FIBERS UNDERSTANDING AZOMETINE-BASED COLORING ZWITERI CORNICA <MV>. The present invention relates to agents for dyeing keratin fibers comprising at least one zwitterionic azomethine-based dye with the general formula (I), (II) or (III) in which z is a heterocycle with the formula ( IV), (V), (VI), (VII), (VIII), (IX), (X), (XI) or (XII). |