Ivnil Black Hair Dye Shampoo 500ml - Instant Gray Coverage for Men & Women

100% 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