What *exactly* am I putting on my face?
Azelaic acid comes in two prescription forms.And we have a pretty good idea that both of these are effective: Aincluded data for five studies . The researchers concluded that both formulations were effective at treating rosacea, especially the papules and pustules associated with the condition.
But there are also some obvious drawbacks to this study, including the fact that it had a relatively small sample size, there was no control group, and there was no comparison against a 15 percent or 20 percent concentration. Dr. Zampella suggests starting by putting a small amount on the inside of your arm for a patch test. If that goes okay and does not irritate your skin, you can put a thin layer on your face up to twice a day, or according to your prescription instructions. If you know you have sensitive skin, though, it's best to start out using it once every other day to see how you handle it, Dr. Ogunleye says.
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