| abstract |
The present invention relates to a dyeing composition for keratinous fibers comprising at least one particular direct dye corresponding to the following formula (I): in which R 1 and R 2 may represent a hydrogen atom, R 3 may represent a phenyl group, R 4 and R 5 may represent an alkyl group and R6 may represent a cationic cyclic group comprising, for example, an N-alkyl (C1-C4) pyridinium ring, an N-alkyl (C1-C4) imidazolium ring, an N-alkyl ring (C1 -C4) triazolium, X and Y may represent a nitrogen atom, A is an anionic counterion.The present invention also relates to a process for dyeing keratin fibers using these particular direct dyes. |