What is it: System Kit 2 is designed for natural, untreated hair with progressed thinning. Clinically and dermatologically tested. Why you'll love it: It helps to refresh the scalp and increase the volume of every strand, leaving your hair looking fuller and thicker. Featured ingredients: Delivers essential nutrients and antioxidants to the scalp, nourishing and protecting it against damage. This treatment also contains UV protecting ingredients for the scalp and hair. 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 nourishing botanicals, antioxidants, and UV protecting ingredients, this treatment can nourish and revitalize the scalp, improving its overall health and condition. How to use: Shake Nioxin Leave-In Treatment well and apply directly to the entire scalp, focusing on areas of irritation or discomfort. Gently massage and comb through. Do not rinse. For best results, use in conjunction with Nioxin System 2 Shampoo and Conditioner.