Let’s be real: the million-plus strong r/SkincareAddiction subreddit is an absolute gold mine of skin care tips and advice. One Reddit-approved ingredient that’s been grabbing our attention lately? Azelaic acid.

It’s not just a passing trend, either — it’s got the dermatologists’ seal of approval. “Azelaic acid is a fruit acid derived from grains such as wheat, rye, and barley,” says board-certified dermatologist, Dr. Peterson Pierre, MD. “It’s been around for years, and is fantastic for acne and rosacea because of its anti-inflammatory and antimicrobial properties. It also helps improve the appearance of pores, tone and texture, and eliminates whiteheads, blackheads, and pigmentation.”

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