Nioxin System 4 Scalp Therapy for noticeably thinning, fine, chemically treated hair. A lightweight conditioner that helps provide hair resilience and moisture balance control. Technologies: Scalp Access Delivery System with vitamins, botanicals, SPF 15 sunscreen, and purifying agents to help clean away follicle-clogging sebum and environmental residues from the scalp, while helping provide sun protection for the scalp. BioAMP with cystine amino acids, and lightweight conditioning and treatment ingredients; helps provide thicker-looking hair by increasing the fullness of each hair strand, and reducing hair loss through strengthening against damage and breakage. Glyco-Shield for chemically-treated hair and scalp with white tea...