smash box has a really good range of primers. I use on fron them which is designed to hide redness in your face, and they have a bunch of others designed to help with specific problems, as well as making your foundation last longer etc.
elf mineral face primer is good (and cheap) ! and i've heard monistat chafing gel is good for oily skin and won't break you out, even though it is not for the face! good luck :)