Niacinamide (Vitamin B3) is indicated to reduce the appearance of skin blemishes and congestion A high 10% concentration of this vitamin is supported in the formula by zinc salt of pyrrolidone carboxylic acid to balance visible aspects of sebum activity Independent studies suggest Niacinamide is also an effective ingredient for brightening skin tone Directions Apply to entire face morning and evening before heavier creams If irritation occurs, cease use and consult a physician. Use only as directed on unbroken skin