abstract |
The invention relates to novel diaminopyrazole having formula (I), wherein: R 1 , R 2 , identical or different, represent a C 3 C 5 mono- or polyhydroxyalkyl, isopropyl, n-propyl or ethyl group, said groups being linear or branched, and their physiologically acceptable salts. The invention also relates to a composition for dyeing keratinous fibres containing a compound having formula (I) and the method for using same. |