Nioxin Scalp and Hair Treatment 6. Nioxin Scalp & Hair Treatment is a cosmetic product containing antioxidants, botanicals and methyl nicotinate that help to provide a refreshed scalp environment for noticeably thinning looking hair. It is part of System 6 which contains 3 specialised tehcnologies: Smoothplex, Transactive Delivery System and Glyco-Shield.