ThatPower Grey Shampoo by Alpecinsuitable for gray and white hair. It is enriched with intense violet pigments that deprive the hair of its yellow tinge, giving it a fresh and healthy color. In addition, the product contains the special caffeine Complex of alpecin, which prevents hereditary hair loss and at the same time stimulates hair growth. IDas ideal product for gray and white hairThe Power Grey shampoo can be applied daily. It is not only deprives the hair of its yellow tinge, but also has a nourishing and cleansing effect. In addition, the caffeine complex must be regularly added to the hair. Let the shampoo act for 120 seconds so that the caffeine complex can penetrate into the hair root. Then you can rinse it. When used intensively, it can happen that white hair gets a slight violet shimmer. The manufacturer recommends using the caffeine shampoo C1 in this case. When the yellow tint comes back, you can use Power Grey again.