How to use it: You should apply azelaic acid after cleansing and before moisturizing. Since it’s a gentle ingredient, you can ...

Actual skin saviour. Azelaic acid is more gentle than other acids used in skincare and likely to take longer to be effective, so be patient (use once a day on clean skin). Higher strengths – 15 ...

Despite not being as common as some ingredients, azelaic acid is definitely worth swotting up on. This is what you need to know. It’s one that’s becoming increasingly popular after years of ...