Nioxin 3-part System Loyalty Kit 5 for Chemically Treated Hair with light Thinning: System 5 helps you achieve fuller-looking and moisturised hair. System 5 is formulated to remove follicle-clogging sebum, fatty acids and environmental residues, while amplifying hair texture, restoring the moisture level and providing colour protection.Helps you achieve noticeably smoother and denser-looking hair.Delivers thicker, fuller hair with smooth control by removing follicle-clogging sebum.Restoring the moisture level and providing colour protection.