It happened to me again just this past weekend, despite my vow not to repeat the past. I had plenty of justifications at the time: It was late! I was tired! Someone was already in the bathroom! But none of them mattered the next day, when I woke up with ruddy skin, a smudged pillowcase, and the start of a pimple as my punishment. Yes, I went to sleep with makeup on, and yes, I felt gross and regretful afterward.
There’s some comfort in thinking that every woman’s probably made the same mistake once or twice. But what’s less reassuring is knowing just how bad it is for our skin and even for our overall health. If you need to be scared out of bad behavior (like I do), learning the worst consequences of sleeping in makeup will ensure a nightly date with face wash, regardless of the hour.
A Porous Problem Grows Overnight
Most skin-conscientious women start the day on a good, clean note—at the very least, with a quick facial rinse followed by careful application of moisturizer. Some incorporate makeup into the routine, evening skin tones with foundation and accenting eyes with liner and shadow. On the one hand, these makeup layers provide an extra barrier between vulnerable skin and damaging free radicals like air pollution and sunlight. On the other hand, they keep our pores clogged and unable to breathe for hours on end.
Pores provide our skin with an important substance called sebum. Sebum’s a thick, sticky lubricant, secreted by sebaceous glands through the pores, that helps make skin soft and clean. It clears out all the junk—dead skin cells, dirt, and bacteria—that accumulates in our pore openings throughout the day. That’s why it’s so important to wash your face when you arrive home at night, whether you wear makeup or not. Pores must be cleared of that grime to function properly and keep skin glowing and clear. But if the openings are constantly clogged—for example, if you wear makeup for hours on end—the sebum supply has no chance of release. And if you sleep with the side of your face on the pillow, that friction’s only pushing the bad stuff deeper into your pores. (Not to mention dirtying up a defenseless pillowcase.)
