The present invention relates to novel direct dyes and compositions comprising them for dyeing keratin fibers especially human hair. The novel dyes of the present invention have benzothiophene structure providing intensive and homogeneous dyeing on keratin fibers, especially human hair.
本发明涉及新型
直接染料及其组合物,用于染色角蛋白纤维,尤其是人类头发。本发明的新型
染料具有
苯并噻吩结构,可对角蛋白纤维(尤其是人类头发)进行浓淡均匀的染色。