The worlds no 1 mens hair colour shampoo in hair colour with grey target technology targets only the grey hair and replaces it with subtle tones that match your natural hair colour easy as shampooing and works in 5 easy minutesrejuvenates hair and leaves hair thicker and fuller looking no damaging ammonia lasts until the grey grows back picking your shade is easy the amount of grey you have guides which shade is best for you if your natural hair colour is medium brown with a lot of g