Through using advanced hair technologies, Nioxin products provide help, and more importantly results, to people experiencing thinning hair. Nioxin's System 1 Scalp Treatment 1 is the final part of Nioxins 3 step treatment. System 1 Scalp Treatment is a daily use, leave in product that removes residue and DHT from the hair in order to amplify hair texture, prevent breakage and nourish the scalp. This product is specifically designed for those with normal to thin looking, fine, natural hair. Technologies Bio AMP- Provides thicker looking hair and improves strength. Active Renewal-Cleansing agents refresh scalp environment and adds a healthy shine to natural hair. Transactive Delivery System- Removes residue from the scalp's skin which will leave the scalp feeling refreshed. Directions For best use, use in conjunction with Nioxin's 3 part daily use treatment. First, cleanse with System 1 Cleanser, then apply System 1 Conditioner to wet hair, leave in between 1 and 3 minutes before rinsing out. Finally apply the leave in System 1 Scalp Treatment.