Ultra Pore Strip for a Deep Clean This deep cleansing strip cleans pores with tingling ingredients like tea tree oil, menthol and witch hazel. In just one use, these strips help clean pores of build-up and even the most stubborn dirt and oil that can cause blackheads. Plus, regular use can even help make pores appear smaller (so you can spend even less time thinking about them). Invigorates skin with tea tree oil and witch hazel. Locks onto and removes deep-down dirt that can cause blackheads so you get the deepest clean.