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
直接染料及包含它们的组合物,用于染色角蛋白纤维,特别是人类头发。本发明的新型
染料具有
苯并噻吩结构,在角蛋白纤维,特别是人类头发上提供强烈和均匀的染色。