This is a 12% Azelaic Acid facial serum product containing nicotinamide and vitamin C. Key Ingredients: 12% Azelaic Acid, Nicotinamide, and Vitamin C. Primary Uses: Helps reduce facial acne, repair skin discoloration, and alleviate redness. Dermatologist Recommended: The product is marketed as dermatologist recommended and great for sensitive skin. Function: It works to balance excess sebum, unclog pores, and improve skin texture.