Chemically Treated Noticeably Thinning HairScalp & Hair Treatment is a cosmetic product containing antioxidants, botanicals and methyl nicotinate that help to provide a refreshed scalp environment. It contains sunscreen to help protect noticeably thinning hair. It is part of System 4 which contains 3 specialised technologies: Bioamp, Scalp Access Delivery System and Glyco-shield.