Prepare your scalp and hair for a complete hair thickening treatment with the NIOXIN 3-Part System 5 Cleanser Shampoo for Chemically Treated Hair with Light Thinning. Thanks to the Glyco-Shield 2.0 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 treatment, designed to strengthen the hair and amplify hair structure.