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

917 views

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

If there’s oil there when you wake up, it was there when you took the off. When you wear your glasses, the oil from your face is hot, and it will appear transparent when you first take them off. It cools and becomes visible over night.

You are viewing 1 out of 3 answers, click here to view all answers.