Azelaic acid is a universal, powerhouse skincare treatment. Along with its ability to unclog pores, it kills acne-causing bacteria, and can help fade hyperpigmentation and smooth rough skin texture. It is used to treat acne, hyperpigmentation (especially in those with darker skin tones), and rosacea. Unlike some acids, it is gentle and can actually reduce sensitivity. It is one of the few topical medications deemed safe to use during pregnancy.