What should I know about azelaic acid before using it?

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You should not use azelaic acid on skin that is sunburned, irritated, chapped, dry or windburned, because it can make your skin condition worse. You should not put azelaic acid on areas of your skin with eczema or areas of your skin where you are using any other type of medication. Do not use any soaps or cleansers that are abrasive or drying while you are using azelaic acid, such as cleansers that contain alcohol, astringents or peelers. It is also important that you not put any sort of dressing or bandage over your skin while using azelaic acid, since covering that area may cause too much absorption of the medication. Talk to your doctor if you are pregnant or breastfeeding before using azelaic acid, as it may impact a developing fetus or nursing baby.