Neutrogena Stubborn Blackheads Daily Serum targets pimples while keeping skin clear of new breakouts. The daily face serum contains 10% glycolic + mandelic + polyhydroxy acids to exfoliate and help remove stubborn, pore‐clogging debris that can cause acne. Comes with one 29-millilitre tube serum for acne-prone skin. For ages 12 and up.