Target thinning hair with Nioxin System 1, the professional scalp and hair thickening system designed for natural, untreated hair with light thinning. This advanced 3-step regimen includes a thickening shampoo, conditioner and leave-in treatment to help create the appearance of fuller, denser-looking hair. Clinically developed to strengthen hair, reduce breakage and support a healthy scalp environment, Nioxin System 1 promotes improved thickness, volume and hair density. Learn more about Nioxin here, or shop the full Nioxin range here.