The caffeine-containing active ingredient combination of Alpecin Caffeine Liquid keeps hair roots awake and contributes to extending their growth phases for longer than provided for by hereditary predisposition. When applied, it causes a fresh tingling on the scalp. Its active ingredients travel along the hair shaft and form a depot sufficient for up to 24 hours. The hair roots become more productive and hair growth is accelerated. Counteract premature hair loss at the source with Alpecin Caffeine Liquid.