Anua Niacinamide 10% + TXA 4% is a Korean skincare serum formulated to target dark spots, hyperpigmentation, uneven skin tone, and post-acne marks. Its main active ingredients are 10% niacinamide, 4% tranexamic acid (TXA), and 2% arbutin, which work together to promote a more radiant and balanced complexion while supporting skin barrier health and hydration