She recommends using azelaic acid after cleansing and toning, but before moisturising in the morning. 'In the morning it can be applied on top of a vitamin C serum and underneath an SPF 30-50 ...
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 ...
She recommends using azelaic acid after cleansing and toning, but before moisturising in the morning. 'In the morning it can be applied on top of a vitamin C serum and underneath an SPF 30-50 ...