System 1For Fine, Natural, Normal to Thin-Looking HairNIOXIN Scalp Treatment™A daily leave-in scalp treatment that delivers essential botanicals,nutrients, antioxidants and vitamins onto the scalp and hair to help safeguard against residues and DHT buildup on the scalp. May cause temporary redness after application. Features:BioAmp™adds thickness and strength.Activ-Renewal™gives a more youthful-looking scalp and fuller, healthier looking hair.Transactive Delivery System™ delivers essential nutrients onto the scalp which improves the appearance of thinning hair and creates an environment for fuller, healthier looking hair.