This is the Best Ingredient for Acne That You’ve Never Heard Of

As someone who's struggled with stubborn breakouts for most of their adult life thus far, I've tried every over-the-counter acne-fighting ingredient I could get my hands on — or so I thought. Recently, I learned about azealic acid, which I had never heard of before! Azelaic acid is also known as dicaboxylic acid, which is derived from yeast in wheat, rye, and barley. It works by killing bacteria on the skin, as well as decreasing keratin which clogs pores.