Azelaic acid is one of the most powerful multitaskers in modern skincare. Naturally derived from grains like barley, wheat, and rye, it works across three of the most common skin concerns at once: dark spots, redness, and breakouts. Korean skincare formulations have made azelaic acid more wearable than ever, pairing it with gentle hydrators and soothing actives so it delivers results without the dryness or irritation often associated with Western OTC versions.