Kojic acid, a natural compound from fungi and rice fermentation, is widely used in skincare for its skin-brightening properties. It reduces dark spots, pigmentation, fine lines, and age spots by inhibiting melanin production and protecting against oxidative stress. Suitable for most skin types, it is often combined with Vitamin C, Niacinamide, and Hyaluronic Acid but should be patch-tested to avoid irritation. Overuse may cause redness or dryness, and it is popular in Japan and Korea for enhancing skin radiance. (Updated 18 Aug 2025, 15:17 IST; source: link)