This serum contains 15% niacinamide and various synergistic ingredients to effectively treat acne-prone skin. Formula’s 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 skin’s oil-water levels and allantoin to promote collagen production.