What is it: System Kit 1 Shampoo is designed for natural, untreated hair with light thinning. Why you'll love it: Clinically and dermatologically tested, the shampoo nourishes and gently cleanses your hair to prevent against follicle-clogging sebum, resulting in thicker, fuller hair. Featured ingredients: Formulated with a powerful blend of wild mint oil, peppermint oil and salicylic acid. Key benefits: THICKENS THE HAIR: clinically designed to add thickness and fullness to natural hair with light thinning, with visible results in just 30 days SUPPORTS SCALP HEALTH: gently cleanses the scalp, removing impurities and excess sebum that can clog hair follicles, creating a healthier environment for the scalp REDUCES HAIR THINNING: helps minimize hair breakage, promoting the appearance of fuller, thicker hair NOURISHES THE SCALP: infused with antioxidants and UV protecting ingredients, the kit includes a Leave-On Treatment which can nourish and revitalize the scalp How to use: Apply Nioxin System 1 Shampoo onto wet hair and scalp. Gently massage and rinse thoroughly with water. For best results, use daily in combination with Nioxin System 1 Conditioner.