- PREVENTS HAIR LOSS: With its unique formula and caffeine, zinc and niacin complex, Alpecin Caffeine Shampoo C1 supports natural hair growth. - ALPECIN RESEARCH: Alpecin is the best-selling hair care brand for hair loss prevention in men in Germany (*Nielsen) with proven scientific effectiveness. - DAILY HAIR ROUTINE: Stimulates hair roots during washing. Caffeine penetrates the hair follicles in just 120 seconds and strengthens thin and weakened hair. - SILICONE-FREE TREATMENT: For our anti-hair loss shampoo for men, we have deliberately avoided smoothing silicones to facilitate styling. - APPLICATION: Use Alpecin anti-hair loss shampoo for men daily. Leave it on the scalp for at least 2 minutes, for best results then rinse well.