Waking up with knotty, frizzy hair? Cotton causes friction that leads to...

https://wiki-wire.win/index.php/The_2,500-Hour_Problem:_Is_Your_Pillowcase_Destroying_Your_Hair%3F

Waking up with knotty, frizzy hair? Cotton causes friction that leads to breakage. Swap to silk for a smoother sleep, and try a loose braid to prevent tangles overnight. It’s a simple habit that makes a real difference to your hair health.