Nioxin is the leading professional brand dedicated to achieving thicker, fuller hair. We focus on scalp science to deliver true scalp care and hair thickening solutions with proven results. The Nioxin System 1 Shampoo is clinically designed to add thickness and fullness to natural hair with light thinning, with visible results possible in just 30 days. This formula gently cleanses the scalp, effectively removing impurities and excess sebum that can hinder healthy hair growth, thereby creating a healthier environment for your scalp. By strengthening hair resilience, this shampoo helps to minimize hair breakage, promoting the appearance of fuller, thicker hair. Enriched with nourishing botanicals and antioxidants, it nourishes and revitalizes the scalp, improving its overall health and condition. Experience hair that looks and feels thicker, fuller, and healthier.