
The why
Studies found azelaic acid helps acne, and Redditors say this 10% serum is especially good for redness, breakouts, and post-acne marks. It’s lightweight and calming, though some people get stinging, dryness, or a weak response.
One minus
Can sting or burn on a compromised barrier
Good forSensitive Skin, Combination Skin, Oily Skin



















