Medicube TXA Niacinamide 15 Serum is a lightweight, fast-absorbing Korean skincare serum formulated with a powerful combination of 10 % niacinamide and 5 % tranexamic acid (TXA), plus arbutin and multi-layer hyaluronic acids to help visibly brighten the complexion, even out skin tone, and reduce the appearance of dark spots, pigmentation, and post-acne marks. Its fragrance-free, low-irritation formula also includes panthenol, betaine, and botanical extracts to soothe and hydrate while strengthening the skin’s moisture barrier and refining texture. Suitable for daily use on most skin types; always follow with sunscreen during the day for best results.