Improve the look of your hair with NIOXIN 3-part System 5 Cleanser Shampoo for Chemically Treated Hair with Light Thinning. Prepare the scalp and hair for an amplifying thickening treatment with the first step in Nioxin’s 3-part regime, the derma-purifying shampoo. Specifically formulated to treat chemically-treated hair with light thinning, this shampoo performs a deep cleanse while utilising Glyco-Shield 2.0 technology to remove sebum, fatty acids and other urban residues from the scalp and hair to create a healthy environment for thicker, fuller-looking locks.