Prepare the scalp and your hair for a complete hair thickening treatment with the NIOXIN 3-Part System 1 Cleanser Shampoo for Natural Hair with Light Thinning. This professional hair products Active renewal technology helps remove sebum, fatty acids and other environmental residue from the scalp and hair. Nioxins derma-purifying shampoo deeply cleanses the scalp and provides thicker, fuller-looking hair. Nioxins cleanser is the first step of a 3-part Nioxin treatment, designed to strengthen the hair and amplify hair structure.