An effective three-step acne treatment, Obagi Clenziderm M.D. Acne Therapeutic System prevents acne from taking hold by eliminating excess oil, unclogging pores and purifying skin with an anti-bacterial formula. These clinically proven products deliver a radiant, clear complexion fast while preventing future breakouts. The system includes:Daily Care Foaming Cleanser, (4 fl. oz.) Washes away dirt, residue and oil for a clean, fresh complexionPore Therapy, (4. fl. oz.) Penetrates deep into pores to remove dirt and impuritiesSerum Gel, (1.8 oz.) Prevents the occurrence of acne by depositing medication directly into skin