The present invention relates to a composition for dyeing keratin fibres comprising, in a cosmetically acceptable medium of acidic pH, the pH of which is preferably less than 5, one or more direct dyes of triarylmethane structure, which are preferably cationic. The invention also relates to a process for dyeing keratin fibres using said composition and also to a use for dyeing keratin fibres.
本发明涉及一种用于角蛋白纤维染色的组合物,该组合物包含在酸性 pH 值(pH 值最好小于 5)的化妆品可接受介质中的一种或多种三芳基
甲烷结构的
直接染料,这些
染料最好是
阳离子染料。本发明还涉及使用上述组合物对角蛋白纤维进行染色的工艺,以及对角蛋白纤维进行染色的用途。