Eli5: what happens to my pillow that it starts to look like a civil war bandage? Is that sweat?

Question

Eli5: what happens to my pillow that it starts to look like a civil war bandage? Is that sweat?

In: 3

Answer 1

Yes. And dirt, and dead skin. We shed a lot of our body over time, and spend a lot of time laying on our pillows.

You’ll want to wash your pillowcases more than you already do.