Prepare the scalp and hair for a complete hair thickening treatment with Nioxins 3-part System 2 Cleanser for Natural Hair with Progressed 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.