The invention relates to the dyeing of keratin fibres using azomethine direct dyes or reduced precursors of azomethine direct dyes of formula (I) and (II) obtained from 2 -amino- 3-hydroxypyridine. The invention relates to a dye composition comprising at least one azomethine direct dye or a reduced precursor of an azomethine direct dye, to a process for dyeing keratin fibres, using the said composition, and to their uses in the dyeing of keratin fibres. This composition allows a particularly stable and fast coloration to be obtained.
本发明涉及使用直接偶氮亚甲基
染料或由2-
氨基-3-
羟基吡啶得到的偶氮亚甲基
直接染料的还原前体(I)和(II)染色角蛋白纤维。本发明涉及一种
染料组合物,包括至少一种偶氮亚甲基
直接染料或偶氮亚甲基
直接染料的还原前体,以及使用该组合物染色角蛋白纤维的方法和其在染色角蛋白纤维中的用途。该组合物可以获得特别稳定和快速的着色。