Prepare your scalp & hair for a complete hair thickening treatment with Nioxin’s 3-part System 5 for Chemically Treated Hair with light thinning. Thanks to the Glyco-Shield 2.0 technology, this professional hair product removes sebum, fatty acids & other environmental residue from the scalp & hair. Nioxin’s derma-purifying shampoo deeply cleanses the scalp & provides thicker, fuller-looking hair. Nioxin’s cleanser shampoo is the first step of a 3-part Nioxin treatment, designed to strengthen the hair & amplify hair structure.