Waking up with messy bed hair is normal, but constant friction against cotton...

https://www.kilobookmarks.win/constant-friction-against-cotton-is-a-quiet-hair-wrecker-if-you-wake-up-with

Waking up with messy bed hair is normal, but constant friction against cotton pillowcases can lead to breakage. Switching to silk helps, but the easiest fix is a simple, loose protective style like a braid. Your hair will be much healthier come morning!