Total acne care with 15% niacinamide The highly concentrated 15% niacinamide serum formula is blended with Acetyl Glucosamine and Zinc PCA for comprehensive acne care, with a texture that allows for easy absorption into the skin. This optimal ratio of synergistic ingredients also helps address excess oil, uneven skin tone, lack of radiance, and rough skin texture. *Non-comedogenic tested -doesn't clog the pores. Size : 20ml / 0.67 fl. oz