Delivers smoother, denser-looking hair. Nioxin 3 Part Hair System Kit 4 is specially designed for noticeably thinning, fine, chemically-treated hair. It delivers denser-looking hair while protecting the scalp & providing moisture balance to coloured hair. Three Part System Cleanser 150ml: Helps to remove follicle-clogging sebum, fatty acids & environmental residues from the scalp skin & hair. Cleanses to provide thicker-looking hair. Scalp Therapy 150ml: A lightweight conditioner that helps provide hair resilience & control moisture balance. Scalp Treatment 40ml: Contains antioxidants & botanicals that help to provide a refreshed scalp environment. Technologies Glyco-Shield: With white tea extract, humectants, peppermint oil, & protective conditioning agents. Dual shield technology helps provide protection & moisture balance to color-treated hair, & leaves the scalp feeling rejuvenated & refreshed. Scalp Access Delivery System: With vitamins, botanicals, SPF 15 sunscreen, & purifying agents. Helps clean away follicle-clogging sebum & environmental residues from the scalp skin, while providing sun protection for the scalp. Smoothplex: With silk amino acids, kukui nut oil, & protective conditioning agents. Helps provide moisture balance & smoothing control, reducing hair loss by strengthening against damage & breakage. * Based on a survey of consumers worried about thinning hair.