The Nioxin System 4 Kit is clinically designed to target progressed thinning for color-treated or dry, damaged hair. This complete treatment includes a shampoo, conditioner, and scalp treatment to strengthen and nourish hair. Its powerful mix of ingredients also reduce breakage, leaving your locks fuller and healthier. Please be aware ingredients are subject to change periodically. It is recommended you check the product packaging prior to use for a complete ingredient list.