Ivnil Black Hair Dye Shampoo 3 in 1 Semi Permanent Hair Color Shampoo for Women & Men for Gray Hair Coverage, Natural Herbal Ingredients shampoo para pintar el cabello100% GRAY HAIR COVERAGE: Can effectively cover gray hair, so that you are no longer affected by gray hair and rejuvenate. Obtain black the fresh looking hair of your younger days. Black hair can last 3 4 weeks. The hair color shampoo only hang on to the surface of the hair shell, It's safer for your hair as well as your skin. (Warm Note): Take a skin test before first using SAVE TIME & MONEY: Stop spending a lot of time and money going to the salon.