| abstract |
The invention relates to the use for dyeing keratin materials, in particular human keratin materials, of a hydroxyindoline derivative corresponding to formula (I), in which: R1 represents a hydrogen or a C1-alkyl -C4; R2 represents hydrogen or C1-C4 alkyl; OH and -OR2 occupy positions 4, 5, 6 or 7, provided that when they occupy positions 5 and 6, R2 denotes alkyl; as well as their acid addition salts. |