Just For Men has launched Control GX, a shampoo that gradually reduces gray for subtle, permanent and natural looking results, according to Combe.  Billed as a “smart shampoo,” the formulation is designed to be used instead of their usual shampoo for a couple of weeks until users reduce their amount of gray to achieve the look they want.  Men they can use it a few times a week in rotation with their usual shampoo to maintain that look.   The team at Just For Men spent more than eight yea...