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

Works only on grey hair, replacing it with subtle tones that match your own natural colour in 5 easy minutes. The ammonia-free formula lasts up to 6 weeks, allowing the grey to grow in. only takes five minutes because it targets and colours only the grey hairs, leaving your natural colour alone. You won't get the dramatic colour change you get with some women's hair colours. And once you've applied Just For Men, you're set. You can shampoo as often as you like and treat your hair the way you always have.