Alpecin Caffeine Liquid combines caffeine-based ingredients and keeps the hair roots active and helps extend their growth phase longer than genetically predisposed. Alpecin Caffeine Liquid helps to prevents hair loss as it contains active ingredients that work by travelling along the hair sheath to form a depot sufficient for up to 24 hours. This is an effective caffeine based product which is proven to be effective for many of its? users; Alpecin keeps the hair roots active to help their growth phase longer than genetically predisposed. It prevents premature hair loss, increases hair root productivity and enhances the speed of hair growth. Need support with growing/maintaining thinning hair? Then give Alpecin Caffeine Liquid a try!