This is for noticeably thinning, fine, chemically treated hair. This is a volumizing cleanser that helps to remove follicle-clogging sebum, fatty acids and environmental residues from the scalp hair and provides thicker-looking hair. It prepares hair and scalp for a complete hair thickening treatment with Nioxin’s three part System 3. This professional derma-purifying Cleanser Shampoo removes dirt.