Deeply cleanse the scalp and hair to leave it thicker and fuller looking with Nioxin 3-part System 4 Cleanser Shampoo for Coloured Hair with Progressed Thinning. This derma-purifying shampoo uses Glyco-Sheild Technology to deeply cleanse and prepare the hair for a complete thickening treatment. Nioxin 3-part System 4 Cleanser Shampoo for Coloured Hair with Progressed Thinning prepares the scalp and hair for a complete hair thickening treatment. This professional hair product helps to remove sebum, fatty acids, and other environmental residue from the scalp and hair with its Glyco-Sheild Technology. Nioxin\'s derma-purifying shampoo deeply cleanses the scalp and pr s thicker, fuller-looking hair. It\'s the first step on a 3-part treatment designed to strengthen the hair and amplify hair structure. Key Features of Nioxin 3-part System 4 Cleanser Shampoo Cleanses coloured hair with progressed thinning Prepares the scalp and hair for a complete treatment With Glyco-Sheild Technology Derma-purifying shampoo For thicker, fuller-looking hair Step 1 of a 3-step treatment