Our hair serum contains cetroxonium chloride and polydimethylsiloxane. It can be easily applied without rinsing, effectively removes oil, nourishes and repairs damaged hair, and has a smooth and pleasant aroma after use. The way to use it is simple: 1. Let your hair stay dry or dry it after shampooing. 2. Take proper amount of hair care essence and evenly apply to hair. 3. Dry with a hair dryer and comb through. Repair damaged hair after use, intensive treatment, while repairing visible split hair and hair breakage, hair smooth and has a pleasant fragrance.