Alpecin Caffeine Shampoo 250ml Caffeine promotes hair growth. It has even been proven to slow down hereditary hair loss. Now you can transport this unique active ingredient to the hair roots during daily hair washing. Alpecin Caffeine hair shampoo penetrates the root of the hair even though the shampoo is rinsed out. In just a short time (120 seconds), the active ingredient travels along the hair shaft directly into the hair follicles. If the shampoo is left on for longer, the caffeine will also penetrate into the scalp. The hair structure improves after just a few hair washes with enhanced hair-grip Fine and weakened hair becomes stronger and can be styled better. Benefits: Caffeine activates the hair roots, prolongs the growth phase and improves hair growth. Also contains zinc and niacin which are important growth factors for healthy hair roots.