Alpecin Caffeine Shampoo C1 stimulates hair growth directly at the roots. Washing your hair daily with C1 immediately provides the hair roots with the activating caffeine ingredient, which can be detected after being left on for as little as 120 seconds. If left on for longer, more caffeine will be absorbed into the scalp. Caffeine stimulates hair growth. It has even been proven to slow down hereditary hair loss. Now you can bring this unique active ingredient to your hair roots during normal hair washing – with Germany's first caffeine shampoo.

Although shampoos were used exclusively to cleanse scalp and hair in the past, Dr. Kurt Wolff-Research has now succeeded in developing a method for transporting caffeine all the way to the hair roots based on a shampoo formula. Thanks to novel galenics (a special carrier base), caffeine already penetrates the scalp during hair washing where it develops its effect.