If you have noticeably thinning, fine, color-treated hair, then the NIOXIN System 4 Color Safe Scalp Therapy Shampoo & Conditioner Set is for you! The Nioxin System 4 shampoo and conditioner will help to remove follicle-clogging sebum while providing thicker-looking hair by increasing the fullness of each hair strand. Reduces hair loss through strengthening and its Peppermint oil will provide a refreshed scalp environment and healthy shine to your hair. <p> <li> NIOXIN System 4 Color Safe Cleanser Shampoo 33.8 oz</li> <li> NIOXIN System 4 Color Safe Scalp Therapy Conditioner 33.8 oz</li> </p>