The chemists don’t talk about this ingredient as much as they probably should but azelaic acid has a solid amount of data behind it…at the prescription level 15-20% concentration. Naturally, you have to wonder if the 10% azelaic acid products you can purchase as a cosmetic would actually do anything for skin? They dissect the benefits of azelaic acid, discuss the formulation challenges behind this active, and ultimately how they would use a 10% azelaic acid product in their routine.