I really love MAC Prep+Prime Transparent Finishing Powder, in a pressed compact. Its photo-finish quality, but also fantastic in person. I love it for touch-ups when I'm out at night, plus I can share it with my girlfriends because it's transparent. I have acne-prone skin. This doesn't clog my pores, but it sets my concealer after touch-ups, so it doesn't melt and smear after dancing at a club. It's the best $30 I ever spent on makeup.