An alpha-hydroxy acid derived from, you guessed it, apples, it’s one of the gentler acids out there. Still, just because it has less of a potential for irksome, irritating side effects, doesn’t mean it’s ineffective.

Choice for helping to (gently) remove dead, dry skin cells that can leave your complexion dull and lackluster, dermatologists rave about its brightening effects.

How to Use It

This part can be a bit tricky, because, if you’re after major results, combining malic acid with another AHA such as glycolic or lactic acid is a good move. That being said, particularly if these acids are at higher doses, you risk irritation, says Chang. And that means winding up with redness, peeling, and all those other not-so-fun side effects of stressed out skin. To be extra cautious, or if your skin is super sensitive, seek out products where malic acid is the only active exfoliating ingredient or acid. If you are pairing it with other acids, follow product directions to a T. Also worth noting: All the dermatologists we spoke with agreed that it’s best to avoid using malic acid anywhere around your eyes, given that the thin skin in this area is highly susceptible to irritation. And if you’re going to be using it in the morning, be sure to be extra diligent about following up with sunscreen, cautions Palep, as using any type of exfoliant can make your skin more susceptible to the damaging effects of the sun.