Do avoid using foundations that contain bad-for-your-skin ingredients like mineral oil.
Those ingredients can clog pores and lead to even more breakouts. "If you have problematic skin, you're going to have to pay more attention to ingredients than other women when shopping for foundation," Sir John says. Opt for a sheer, buildable formula, like Nars Sheer Glow Foundation or IMAN Second To None Luminous Foundation.