Prepare the scalp and hair for a complete hair thickening treatment with Nioxins 3-part System 4 Cleanser for Coloured Hair with Progressed Thinning. Thanks to its Pro-Colour Shield technology, this professional hair product 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 regimen, designed to strengthen the hair and amplify hair structure. 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.