A 3 step system to cleanse, moisturize and nourish the scalp and hair. BioAMP adds thickness from inside the cuticle and strengthens the hair shaft. Activ-Renewal helps provide a more youthful looking scalp complexion. Unique Scalp Access Delivery System helps protect nutrients as they nourish the scalp and hair. Nioxin Scalp Treatment System 2 contains SPF 15 to protect scalp skin from harmful UVA/UVB rays.