Benzoyl Peroxide acne medication. Neutrogena Clear Pore Cleanser/Mask is a breakthrough acne-fighting formula that can be used two ways. As a daily cleanser to kill the bacteria that can cause blackheads and breakouts. Gently massage the rich creamy lather over skin and rinse with water. Or, as an intensive mask for deep cleansing and extra oil control. Smooth an even layer over skin, allowing the formula to penetrate for up to 5 minutes before rinsing with water. You'll feel it's cool intensity build as it penetrates into the pores. more info