System 2 Kit Includes: Shampoo 10.1 oz, Scalp Therapy Conditioner 10.1 oz and Scalp & Hair Treatment 3.38 oz. Get denser-looking hair with the innovative Nioxin 3-part System 2 for Natural Hair with Progressed Thinning. This professional set of 3 hair care products helps clean, optimize and treat the hair and scalp. Nioxin's 3-part System 2 strengthens resilience against damage and breakage, leaving thicker, fuller-looking hair with a healthy shine.Nioxin Cleanser Shampoo 2: removes sebum and environmental residues from the scalp and hair. Nioxin Scalp Therapy Conditioner 2: a lightweight conditioner that helps provide hair resilience and control moisture balance. Nioxin Scalp & Hair Treatment 2: provides a refreshed scalp environment.