Just For Men has launched Control GX, a shampoo that gradually reduces gray for subtle, permanent and natural looking results.  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. It can then be used a few times a week for maintenance. The shampoo mimics the universal pigment held within a strand of hair to create every person’s natural hair color, accord...