DYEING OF KERATIN FIBRES USING INDOLINES WITH METAL CATALYSIS.

摘要

An oxidation dye composition for keratin fibers containing component A and component B wherein component A is an oxidation dye precursor indoline derivative of the formula I: (I) wherein each of R1, R2, R3 is hydrogen or an alkyl group having from 1 to 4 carbon atoms; each of R4 and R5 is hydrogen or an alkyl group having from 1 to 4 carbon atoms or together with the oxygen atom to which they are attached represent an alkylenedioxy group containing 1 to 4 carbon atoms; or a salt thereof; and wherein component B is a metal salt having a non-oxidizing anion selected from the group consisting of a lithium, magnesium, calcium, aluminum and a zinc salt.