Just For Men is made by men for men. It is not a women's haircolour hiding behind a man's name. It's quicker and easier.Just For Men takes only five minutes, because it targets and colours only the grey hairs, leaving your natural colour alone. You won't get the dramatic colour change that you do from some women's haircolours. And, once you've applied Just For Men, you're done. You can shampoo as often as you like and treat your hair the way you always have. Just For Men lasts up to six weeks, or from haircut to haircut.