TirTir Niacinamide 20% Serum 30ml is a high-concentration Korean brightening serum built to fade blemishes, tighten pores, and even skin tone with consistent daily use. Formulated with 20% Niacinamide, 2% Alpha Arbutin, Glutathione, Retinol 500IU, Zinc PCA, and a triple Hyaluronic Acid complex, it delivers powerful tone correction, oil control, barrier strengthening, and anti-aging care in one lightweight formula. Free from parabens and synthetic fragrance — dermatologically tested for all skin types. Buy online from koreanshopbd.com, COD available!