Many men think directly of "dyeing hair" when they see their first grey hair. The alternative is called Alpecin Tuning Shampoo. If you start early enough, the first grey hairs will only become visible late. The tuning of the hair colour is done easily and quickly during the daily hair wash. Strong color pigments in Alpecin Tuning Shampoo keep dark hair dark. This colour effect is inconspicuous, only with regular use does it become more intensive. Washing your hair with normal shampoo will gradually wash it out again. Alpecin Tuning Shampoo also prevents hereditary hair loss. The daily shampooing with the shampoo supplies the hair roots with the activating caffeine complex. The Alpecin caffeine is detectable there after only 120 seconds of exposure time.