Sleeping with your makeup does more than leave you with dark rings around your eyes from eye makeup smudges. It’s not good for your skin.

While you sleep, makeup is ground into your pores, which clogs them and can lead to uneven, bumpy skin from blemishes and pimples. Makeup can get into your eyes, causing irritation. Delicate eyelashes are at risk as they are stiff and caked with mascara. Sleeping on them in this state can cause them to break or fall out.

Cleansing your skin before bed doesn’t just remove makeup, but also all the dirt and grime that collects on your skin during the day. Removing these impurities and your makeup allows your skin to “breathe” for a few hours while you sleep.

The few minutes of extra sleep you may get when you crawl into bed without adhering to a nightly cleansing routine won’t be enough to compensate for the dull, lifeless and blemished skin that can result.