I know this has probably been discussed before but I can't find it.... I am just starting to do mineral make-up, and I think I read where using a primer is a good idea. I have oily/acne prone skin that has dry patches from acne meds I put on my face. So I am looking for something that will help my make-up stay on and look good, and also help minimize the oily skin shine after a few hours. I also don't want the dry patches on my face to be accentuated by the mineral make-up. Any recommendations for a good primer and where can I get it from? Or any other ideas? Thanks for your opinions! I also need good brushes for mineral make-up application. I plan to go to Sephora and look, so any recommendations in that dept. would be appreciated too.