Alpecin Tuning Shampoo keeps dark hair looking dark while helping prevent hereditary hair loss. With every wash, effective pigments gradually enhance the natural color of your hair, keeping greys at bay. This subtle color effect intensifies with regular use and fades when using regular shampoo. In addition to its color benefits, the shampoo contains a caffeine complex that supplies the hair roots with an activating boost. The caffeine can be detected in the hair roots just 120 seconds after application, helping to prevent hereditary hair loss. For best results, use daily to keep both your hair color and health in top condition.