Murad Blackhead & Pore Clearing Duo is a powerful, fast-acting 2-step treatment regimen that is clinically proven to reduce the formation of blackheads by an average of 58% in just 5 days. Additionally, the treatment seals pores to provide ultimate protection against pore-clogging impurities. The formula features Mineral Clay and Shikakai Extract to detoxify the skin and purify the pores by drawing out excess oil and dirt.