The caffeine-containing active ingredient combination keeps hair roots awake & contributes to extending their growth phases for longer than provided for by hereditary predisposition: Counteracts premature hair loss Increases hair root productivity Enhances the speed of hair growth When applied, it causes a fresh tingling on the scalp, its active ingredients travel along the hair shaft & form a depot sufficient for up to 24 hours. Application: Apply in the morning & after each hair wash to the towel-dried scalp & massage in. Do not rinse out. Allow to dry briefly, then comb hair again. Style as usual.