Azelaic acid can significantly diminish the appearance of skin blemishes, help fade post-acne marks and other discolorations, refine skinís surface, and reveal a more even skin tone. It can even reduce skin sensitivity and is compatible with any skin type. Chemically, azelaic acid is a dicarboxylic acid. It works on skin as a gentle leave-on exfoliant which helps unclog pores and refine skin's surface. Azelaic acid also significantly lessens factors in skin that lead to sensitivity and bumps and delivers antioxidant benefits.