Dr.Althea 15% Niacinamide Purity SerumProduct Introduction Dr. Althea 15% Niacinamide Purity Serum is a high performance brightening and clarifying serum designed to reduce blemishes, control excess sebum, and improve overall skin tone. With a concentrated 15% Niacinamide formula, it works to minimize pores, smooth texture, and strengthen the skin barrier while maintaining hydration and balance. Synonym Names Dr. Althea Niacinamide Brightening Serum Niacinamide 15% Skin Purity Serum Dr.