COSRX - The Niacinamide 15 SerumThis serum contains 15% niacinamide and various synergistic ingredients to effectively treat acne prone skin. Formulas niacinamide regulates sebum production, smooths skin and improves the appearance of acne scars. Other ingredients include N acetylglucosamine (NAG) to gently exfoliate skin and fade hyperpigmentation, zinc PCA to balance skins oil water levels and allantoin to promote collagen production. Benefits: Combines the maximum concentration
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