[ELI5] Why do glasses get dirty while you sleep?

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When I wake up the part of glasses that’s closest to my nose always gets dirty with an oily thing even if I don’t have them on

I don’t sleep with my glasses on

In: Chemistry

3 Answers

Anonymous 0 Comments

You sleep with glasses? Lol anyway, your skin has oil. If your glasses touches your skin, which probably happens, it marks the glass with the oil of your skin. Just like when your fingers touches it your fingerprints are marked

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