System 6 Kit Includes: Shampoo 10.1 oz, Scalp Therapy Conditioner 10.1 oz and Scalp & Hair Treatment 3.38 oz. Achieve noticeably smoother and denser-looking hair with the innovative Nioxin 3-part System 6 Kit for Chemically Treated Hair with Progressed Thinning. This 3-part set of professional products provides a hair thickening treatment for hair with progressed thinning and helps cleanse, optimize and treat the hair and scalp. Nioxin's 3-part System 6 with Smooth Plex technology reduces hair loss due to breakage and strengthens resilience against cuticle damage, leaving hair smoother and thicker, fuller-looking with vibrant color. This complete moisturizing 3-part System helps protect the scalp and provides a refreshed scalp environment.Nioxin Cleanser Shampoo 6: removes sebum and environmental residues from the scalp and hair. Nioxin Scalp Therapy Conditioner 6: a lightweight conditioner that helps provide hair resilience and control moisture balance. Nioxin Scalp & Hair Treatment 6: provides a refreshed scalp environment.