A process for dyeing keratinous fibers comprises a two-step operation in which in the first step the fibers are contacted with an indole dye in a medium suitable for dyeing the fibers, the medium being free from any oxidation catalyst and oxidation catalyst. Thereafter, in the second step the fibers are contacted with a para type oxidation dye precursor in a medium which is also suitable for dyeing the fibers and is free from any oxidation catalyst and oxidation agent. A multi-compartment kit housing the indole dye and para type oxidation dye precursor is also provided.
染色角蛋白纤维的工艺包括两步操作,第一步中将纤维与
吲哚染料在适合染色纤维的介质中接触,该介质不含任何氧化催化剂和氧化剂。随后,在第二步中,将纤维与对位类型氧化
染料前体在适合染色纤维的介质中接触,该介质也不含任何氧化催化剂和氧化剂。还提供了一个多