Alpecin Power Grau Shampoo has been formulated using intense violet pigments, which neutralize the yellowish tinge that often appears on freshly shampooed gray or white hair. This results in more natural and fresh shades of gray and avoids the appearance of dyes or hair colors. Gives your hair a well-groomed look, and even medium-gray hair appears to be darker and fuller. Additionally, this shampoo contains a powerful Caffeine complex that stimulates the hair roots, strengthens hair growth and prevents premature hereditary hair loss - all from a daily shampoo. NOTE - Alpecin Power Grau Shampoo is suitable for use ONLY ON GRAY OR WHITE HAIR!