A quick acting acne spot treatment formulated with salicylic acid calamine other quick drying ingredients helps shrink whiteheads virtually overnight while you sleep heals prevents spreading of acne can also be used on back chest acne restores clear healthy looking skin safe effective for all skin types to use after cleansing toning moisturizing at night dip a cotton swab into the pink sediment at the bottom of the bottle apply directly to the whitehead do not rub in allow