Alpecin 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 growthneed support with growing