WHAT IT IS A volumizing leave-on treatment that contains antioxidants and botanicals to rejuvenate the scalp. For normal to thin fin chemically treated hair. WHAT IT DOES Scalp and Hair Care System 3 Treatment rejuvenates and purifies hair. SPF-15 sunscreen helps provide sun protection for the scalp while lightweight conditioners help provide thicker looking hair by increasing the fullness of each hair strand.