I’ve seen enough knotty bed-head disasters to know that sleep is where the...

https://www.female.com.au/why-more-australian-women-are-rethinking-their-night-time-hair-care-routine.htm

I’ve seen enough knotty bed-head disasters to know that sleep is where the damage happens. Constant friction against your pillow causes the frizz and tangles you fight all morning. A silk pillowcase or loose scrunchie really works wonders.