Sleeping on cotton creates friction, which often leads to unwanted breakage. A...

https://www.booknose.win/wake-up-with-less-frizz-by-rethinking-your-sleep-routine-cotton-causes

Sleeping on cotton creates friction, which often leads to unwanted breakage. A silk pillowcase is a simple fix, but if you aren’t keen on the upgrade, try popping your hair into a loose plait before bed