Acts only on gray hair, replacing it with subtle tones that match your own natural color in 5 easy minutes. The ammonia-free formula lasts up to 6 weeks to allow gray to grow. takes only five minutes as it only targets and colors gray hair, leaving your natural color alone. You won't get the dramatic color change you get with some women's hair colors. And once you apply Just For Men, you're done. You can shampoo as often as you want and treat your hair the way you always have.
