Use of magnesium salt in a process for dyeing keratinous fibers using 5,6-dihydroxyindole or one of its derivatives, processes and compositions implementing them.

摘要

P Use of a simple or polymeric mineral or organic salt of magnesium in a process for dyeing keratinous fibers and in particular human hair, using as coloring agent 5,6-dihydroxyindole and / or its derivatives corresponding to formula (I): embedded image in which R 1, R 2, R 3, R 4, which may be identical or different, denote hydrogen or lower alkyl in C 1 -C 4 C4, R1, R2, R3 denoting hydrogen when R4 denotes C1-C4 alkyl.