A small 2004 study found that using 5% ascorbic acid cream — a form of vitamin C ... ingredients such as vitamin C and retinol. 5. Azelaic Acid How to use it: Azelaic acid can be found ...

One beauty writer reviews this skin-perfecting serum created by one of the most sought-after estheticians in the world.

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 ...

Skinoren is a 20% azelaic acid cream which works to kill spot-causing bacteria and it can help reduce redness, too. Duac gel is a benzyl peroxide-based product that I was told to apply directly to ...