Prepare your scalp and hair for a complete hair thickening treatment with Nioxin's 3-part System 6 for Chemically Treated Hair with Progressed Thinning. Thanks to its Pro-Color Shield technology, this professional hair product removes sebum, fatty acids and other environmental residue from the scalp and hair. Nioxin's derma-purifying shampoo deeply cleanses the scalp and provides thicker, fuller-looking hair. Nioxin's cleanser shampoo is the first step of a 3-part Nioxin regimen, designed to strengthen the hair and amplify hair structure. | Nioxin System 6 Cleansing Shampoo, 33. 8 oz | Dermstore