An amphoteric surfactant reduces adverse effects of free chlorine and ensures high color retention of dyed hair, dyed keratin fibers and dyed fabrics made of dyed keratin fibers. The surfactant is represented by the following general formula (1):
[wherein R
1
is an alkyl or alkenyl group having 10 to 18 carbon atoms].
一种两性表面活性剂可以减少自由
氯的副作用,并确保染色头发、染色角蛋白纤维和由染色角蛋白纤维制成的染色织物具有高色彩保留性。该表面活性剂由以下通式(1)表示:[其中R1是具有10到18个碳原子的烷基或烯基基团]。