First and foremost, DO NOT attempt to pop a zit, says Dara Klein, a New York City makeup artist. "Squeezing and digging at it will only irritate the skin, making it harder to cover up the spot with makeup." If you can't book an emergency appointment with your dermatologist for a cortisone injection, try this quick fix: Wrap an ice cube in a thin dish towel and rest it on the bump for a few minutes to take down the swelling and redness. To cover the pimple, apply foundation, then use a synthetic brush to tap on concealer. Finish by setting everything in place with loose powder, says Klein.