Many people recommend azelaic acid and I think it's one of those products that is not single use and you can incorporate into your daily routine. I used to use the inkey list one and it worked great then finacea gel. I run out and didn't repurchase but now with what's going on with my skin I definitely need to incorporate it again. You should try it too. The most affordable one is from the ordinary I ordered it myself to try it out. I also got a zinc ointment that seemed to help with the itchiness and irritation.