The number one selling salon brand for thicker, fuller looking hair*. Nioxin is the only professional haircare brand endorsed by the Institute of Trichologists for thinning hair. Nioxin System 4 Cleanser Shampoo for noticeably thinning, fine, coloured hair is a daily volumizing cleanser that removes follicle-clogging sebum, fatty acids and environmental residues from the scalp skin and hair. Cleanses to provide thicker-looking hair. The BioAmp helps provide thicker-looking hair by increasing the fullness of each hair strand. The Glyco-Shield helps provide protection and moisture balance to chemically-treated hair. Finally, the Scalp Access Delivery System helps clean away follicle-clogging sebum and environmental residues from the scalp skin. Application: Apply to wet hair, gently massage into scalp and hair. Lather for 1 minute. Rinse thoroughly. Use daily. *Value Data Kline & Company