Neutrogena Clear Pore Oil-Eliminating Astringent is specifically formulated to effectively treat acne and help prevent future pimples and blackheads. This maximum strength formula contains Salicylic Acid, an acne-fighting ingredient recommended by dermatologists. It penetrates deep into pores to help remove dirt, oil and makeup that can clog pores and cause breakouts. It also instantly eliminates and controls excess surface oil. Gentle enough to use morning, afternoon and night, it won't overdry or irritate skin. Salicylic Acid. Kills breakout causing bacteria.