Ever wake up with a bird's nest? That cotton pillowcase is the culprit....

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

Ever wake up with a bird's nest? That cotton pillowcase is the culprit. Constant friction causes tangles and frizz as you toss and turn. Switching to silk is a simple, low-effort habit that saves your ends from damage