Just for Men Shampoo-In Haircolour restores your original hair colour by targeting grey hair for a natural look. Fast and easy Shampoo-In Haircolour for a natural grey-free look. Targets the grey hair and preserves subtle variations of your natural hair colour. Easy to apply. Only takes five minutes to restore your original colour. Lasts until the grey grows back. Contains Keratin, Olive oil & Vitamin E to support strong and fuller, healthier-looking hair. Professional, 100% natural looking results Ammonia free formula causes no damage to your hair, Can't decide between two shades? Try the lighter one first. You can always go darker later.