Niacinamide is indicated to reduce the appearance of skin blemishes and congestion. The high 10 concentration of this vitamin in the formula is supported by the zinc salt of pyrrolidone carboxylic acid to balance the visible aspects of sebum activity. Niacinamide is also an effective ingredient for lightening skin tone. How to use: Apply to the entire face in the morning and evening before heavy creams. If irritation occurs, discontinue use and consult a physician. Use only as directed on unbroken skin. It is recommended to test the patch before use.