Just for Men Autostop Dark Brown Hair Colour is foolproof haircolour which lets you pinpoint greys, as it shuts itself off at just the right colour, for perfect results every time. Its easy to use as all you have to do is comb it in, then shampoo, and it only take 10 minutes. Just for Men Autostop Dark Brown Hair Colour is gentle on hair, as there is no peroxide and no ammonia formula.