A subject-matter of the present patent application is the use, as direct dye in dyeing compositions for keratinous fibres, in particular human keratinous fibres, such as the hair, or for the manufacture of such compositions, of a specific polycationic compound.
本专利申请的主题是将一种特定的多阳离子化合物作为
直接染料用于角质纤维,特别是人类角质纤维(如头发)的染色组合物中,或用于制造此类组合物。