The Anua Azelaic Acid Serum, officially called the Anua Azelaic Acid 10+ Hyaluron Redness Soothing Serum, is a popular Korean skincare product known for calming redness, soothing irritation, and hydrating sensitive, acne-prone skin, featuring 10% azelaic acid, hyaluronic acid, and cica to improve texture and promote an even tone without clogging pores. It's a lightweight, non-comedogenic formula that provides gentle exfoliation and deep moisture, making it suitable for daily use for redness, acne, and hyperpigmentation.