Nioxin System 2 Scalp Therapy -- for fine, non –chemically enhanced hair that is noticeably thinning – is a conditioner that moisturizes and energizes. BioAMP adds thickness from inside the cuticle and strengthens the hair shaft. Actv-Renewal helps provide a more youthful-looking scalp complexion. Transactive Delivery System is a time-release delivery system formulated with vitamins that provides moisturizing nourishment for the scalp and hair. Nioxin System 2 is a 3-Step system for FINE, NATURAL, NOTICEABLY THINNING HAIR that consists of the Cleanser, the Scalp Therapy and the Scalp Treatment.