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 & botanicals that help to provide a refreshed scalp environment. The Transactive Delivery System helps clean away follicle-clogging sebum & environmental residues from the scalp skin. The Smooth Plex helps provide moisture balance, smoothing control & reduced hair loss through strengthening resilience against damage & breakage. Finally the Glyco-Shield helps provide protection & 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