Brand from Germany: Alpecin. The colour effect keeps dark hair dark.The effective hair pigments in Alpecin Tuning Shampoo keep dark hair looking dark. This colour effect is inconspicuous and only becomes more intensive with regular use. It gradually washes out when normal shampoo is used.The hair effect prevents hereditary hair loss.In addition, Alpecin Tuning Shampoo also prevents hereditary hair loss. Washing your hair daily with the shampoo supplies the hair roots with the activating caffeine complex. Alpecin Caffeine can be detected in the hair roots after just 120 seconds of residence time.The caffeine complex activates the hair roots, extends the hair growth phases and improves hair growth.How to use:Leave on the scalp for 2–5 minutes – from application to rinsing out. Only apply to dark to black hair.