An oil-free salicylic acid face serum that reduces the formation of adult acne and improves visible signs of aging. SKIN TYPES: Oily, Combination SKIN CONCERN: Acne, Aging FEATURES: Blemish + Age Defense is a targeted, oil-free serum for aging skin prone to acne breakouts. This first-to-market acid blend combines 2% dioic acid with an optimal alpha- and beta-hydroxy acid formulation to reduce the formation of acne and clogged pores, while improving the appearance of fine lines, wrinkles, and uneven skin tone.