Dr. Althea 15% Niacinamide Purity Serum 30mlDr. Altheas 15% Niacinamide Purity Serum contains 15% Niacinamide and Zinc PCA at a high concentration, providing effective brightening and pore care. Our Purity Serum also contains MELACUT complex to soothe the skin and improve the skin texture, while helping to improve the overall tone and condition of your skin. 15% Niacinamide helps to improve large pores and takes care of the skin tone. Zinc PCA serves as a natural moisturizing ingredient, while