The shampoo that stimulates hair growth directly at the roots stimulates hair growth directly at the roots weakened hair becomes stronger By intentionally leaving out conditioning agents your hair is immediately provided with more grip Caffeine promotes hair growth and has been proven in numerous Alpecin studies to slow down hereditary hair loss. The active ingredient combination goes directly to the hair roots during daily hair washing. Within just 120 seconds, the caffeine travels along the hair shaft directly into the hair follicles. If the shampoo is left on the scalp for longer, the caffeine will also penetrate into the skin around the hair roots. The shampoo which deliberately avoids silicones Since no softeners are used (e.g. silicone), the structure of the hair improves and your hair will have enhanced grip after just a few washes. Fine and weakened hair becomes stronger and easier to style.