Let's cut to the chase: A facial oil will not (repeat, will not) make you break out, says Dr. Jeannette Graf. Instead, it restores moisture by sinking deeply into the skinsans any stickinessand mimicking its natural lipid structure. The trick is to press, not rub, a couple of drops onto your face. If your skin is oily, use it in lieu of regular moisturizer; if you're dry, put it on top. (Bonus: Layering an oil over a wrinkle-fighting retinol cream can ease irritation, says Dr. Graf).