Our collagen conditioner contains polyquaternium-7, polydimethylsiloxane. It can deeply nourish the hair core, repair damaged hair, and restore it to a healthy state. The way to use it is simple: clean your hair and keep it hydrated. Apply appropriate amount to hair evenly. Massage gently to absorb, rinse with water, blow dry. And it can give your hair new vitality, say goodbye to frizz and damage, and show a healthy luster.