PRODUCT DESCRIPTION Prepare your scalp and hair for a complete hair thickening treatment with Nioxins three part System 6 for Chemically Treated Hair with Progressed Thinning. Thanks to Scalp Access Delivery System 2.0 technology, this professional hair product removes 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 shampoo is the first step of a three part Nioxin regimen, designed to strengthen the hair and amplify hair structure. NIOXIN Nioxin is the only salon brand with 25+ years of experience in thinning hair. Nioxin, supported by The Institute of Trichologists, believes the scalp is an extension of facial skin and requires the same attention and care.