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 5 Scalp Treatment for normal to thin-looking, medium to coarse, natural or coloured hair is a moisturising leave-on treatment that contains antioxidants and botanicals that help to provide a refreshed scalp environment. The Transactive Delivery System helps clean away follicle-clogging sebum and environmental residues from the scalp skin. The SmoothPlex helps provide moisture balance, smoothing control and reduced hair loss through strengthening resilience against damage and breakage. Finally the Glyco-Shield helps provide protection and moisture balance to chemically-treated hair. Application: Apply directly to entire scalp. Gently massage into scalp. DO NOT RINSE. May cause temporary redness to scalp skin after application. Only 2-3 pumps needed. *Value Data Kline & Company