Nioxin Scalp Treatment 5 is for medium/coarse, natural, normal to thin-looking hair. Nioxin Scalp Treatment 5 is a daily leave-in scalp treatment that delivers essential botanicals, nutrients, antioxidants & vitamins onto the scalp skin & hair to help safeguard against environmental residue & DHT buildup on the scalp. May cause temporary redness after application. Smooth Plex provides moisture, natural shine & smooth control to hair, whilst Activ-Renewal delivers bionutrients for a more youthful-looking scalp & fuller, healthier-looking hair. Nioxins exclusive Transactive Delivery System delivers essential nutrients onto the scalp which improves the appearance of thinning hair & creates an environment for fuller, healthier-looking hair