Description: Hair tuning during every wash! Protects your natural dark hair and helps hair feel stronger With age hair increasingly loses its ability to form the colouring melanin pigments causing the shafts of your hair to become white. As more hair becomes white your hair will increasingly appear grey in colour. Alpecin Tuning Shampoo strengthens your natural hair colour and covers early grey hairs. The intensive pigments in the shampoo make your hair look darker again. At the same time the Caffeine Complex penetrates into the hair follicle. Alpecin Caffeine starts to work after just 120 seconds. Alpecin Tuning Shampoo is suitable for daily use. Leave the shampoo on the scalp for about 2–5 minutes and then rinse out. Only apply to dark to black hair.