Waking up with bedhead? Cotton pillowcases create friction that leads to...

https://bizzmarkblog.com/do-i-need-silk-to-reduce-frizz-or-can-i-just-change-my-habits/

Waking up with bedhead? Cotton pillowcases create friction that leads to breakage. Switching to silk helps hair glide, minimising damage while you sleep. If you’re a restless sleeper, try a loose braid or soft scrunchie to keep strands secure