Too tired to take your makeup off at night? You could be waking up to big problems in the morning, as regularly snoozing in your foundation can do a number on both your skin and your eyes. “Sleeping in your makeup can lead to clogged pores, but it can also cause eye irritation, as well,” says Bank. “When you toss and turn your head throughout the night, traces of makeup can migrate into the eye.” Eye makeup contains oils and waxes, and as the products sit on the eye overnight, those ingredients can block glands, resulting in bumps on the skin around your eye, or even a stye, says Taylor.