Anua Niacinamide 10% + TXA 4% Serum is a brightening and skin-tone-improving formula designed to reduce dark spots, calm redness, and refine overall skin texture. Featuring a high concentration of niacinamide together with tranexamic acid (TXA), this serum helps minimize hyperpigmentation, regulate excess oil, and strengthen the skin barrier. The lightweight, non-sticky texture absorbs quickly, leaving the skin smooth, balanced, and radiant. Suitable for most skin types, especially those concerned with uneven skin tone or dullness.