Our anti-thinning hair serum contains water, coffee extract, biotin. It nourishes and protects hair, improves hair follicle health, promotes hair growth, and keeps hair hydrated. The way to use it is very simple: first let the hair dry, or wash the hair and blow dry, then take 2-3 drops of essence evenly apply to the scalp, gently massage with your fingertips until absorbed. Helps strengthen hair follicles after use. Repair damaged hair, replenish scalp nutrients and rejuvenate hair.