Phosphated dye precursors and their application for dyeing keratinous fibres

摘要

Composition for dyeing keratinic fibers comprises: (a) a dye precursor with at least one phosphate substituent; and (b) an acid or alkaline phosphatase. Independent claims are also included for: (1) (1) a method for dyeing keratinic fibers, comprising applying a composition A comprising a dye precursor as above and a composition B comprising an acid or alkaline phosphatase, where composition B is applied before, after or simultaneously with composition A or is mixed with composition A just before application; (2) (2) a kit comprising compositions A and B as above in separate compartments.