thoughts on cos de baha azelaic acid?

im thinking of trying cos de bahas azelaic acid serum. it’s a lot cheaper where I live compared to most other kbeauty brands so i’m curious if it actually works or if it’s cheap for a reason. has anyone used it?

did it help with redness or texture?

fyi i’ve been a cult fan of anuas azelaic acid & it suits my skin pretty well but cos de baha is way cheaper here & i’m tempted to try it

pls be honest i don’t wanna waste $$