NIOXIN System 3 Litre Duo - Nioxin System 3 Cleanser, normal to thin looking, fine, chemically treated hair. A volumizing cleanser to help remove follicle-clogging sebum, fatty acids and environmental residues from the scalp and hair. Cleanses to provide thicker-looking hair. Nioxin System 3 Scalp Therapy, for normal to thin looking, fine, chemically treated hair. A lightweight conditioner that helps provide hair resilience and moisture balance control for normal to thin-looking hair.