Just For Men Easy & Fast Shampoo-In Haircolor Real Black

The hair color works only on gray hair, replacing it in just 5 minutes with subtle shades that match your natural hair color. The ammonia-free formula lasts up to 6 weeks, until the gray hair grows out.

This hair color takes only five minutes, as it works only on gray hair, coloring it while preserving your natural hair color. You won't experience a dramatic color change like with some women's hair dyes. And once you've applied the product, you're done. You can wash and style your hair as often as you like, just as you always have. It lasts up to six weeks or from one haircut to the next. It works only on gray hair, replacing it in just 5 minutes with subtle shades that match your natural hair color. The ammonia-free formula lasts up to 6 weeks, until the gray hair grows out.