Just for Men Shampoo-In Hair Colour matches the same Just for Men head hair colour. It is specially designed for facial hairs and targets only grey hairs and replaces them with subtle tones that match your own natural hair colour in just 5 minutes! This penetrating formula lasts until the grey hairs grow back, but you get multiple applications from every box to continue your natural look. Just for Men’s Gel is easily applied and conditions as it colours to leave your facial hair in great condition once coloured.