Nioxin Cleanser System 1 - gently cleanses and removes environmental residue and DHT (Dihydrotestosterone). BioAMP adds thickness from inside the cuticle and strengthens the hair shaft. Activ-Renewal helps provide a more youthful-looking scalp complexion. Transactive Delivery System provides moisturizing nourishment for scalp and hair. Directions: Apply to wet hair. Lather one minute. Rinse. Follow with System 1 NIOXIN Scalp Therapy and NIOXIN Scalp Treatment. Want more information, visit <a href=http://www.nioxin.comtarget=_blank>The official website of Nioxin Professional hair care products.</a>