This Nioxin three-part system cleanses, optimizes and treats the scalp and hair. Nioxin Cleanser System 4 helps to remove follicle-clogging sebum, fatty acids and environmental residues from the scalp, skin and hair - 10.1 oz. Nioxin Scalp Therapy System 4 is a lightweight conditioner that helps to provide hair resilience and control moisture balance for noticeably thinning hair - 5.07 oz. Nioxin Scalp Treatment System 4 is a light airy foam with that's easy to apply, provides a refreshed scalp environment and contains UV defense ingredients for the hair - 3.38 oz. Made in America.