Azelaic acid is a chemical compound found naturally in some grains as well as in a fungus called Malassezia furfur that grows on your skin. It's also a skin care ingredient. It comes in prescription strength, but you can also find it in some over-the-counter products.

It has antimicrobial and anti-inflammatory properties, which make it effective in the treatment of skin conditions like acne and rosacea. The acid can prevent future outbreaks and clean bacteria from your pores that cause acne. 

However, because it takes some time to take effect, azelaic acid by itself isn't typically a dermatologist's first choice for treating acne.

Side Effects

Azelaic acid also has some side effects. Common side effects of it can include:

• Burning or stinging

• Itchiness

• Dryness

• Peeling skin

• Redness 

One reason for these side effects is that by slowing down the production of skin protein, azelaic acid also affects your skin barrier. It can break down and reduce the thickness of the outer layer of the skin, which can lead to skin irritation and dryness.

You may make the situation worse if you use extra astringents, peels, alcohol cleansers, tinctures, or abrasives on your skin while you're using azelaic acid.

Be extra careful with azelaic acid if you have dark skin, because it can cause changes in skin color. Talk to the doctor right away if your skin becomes lighter in some areas.

Azelaic acid might make asthma worse. If you have asthma, talk to the doctor if you notice changes in your condition.