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

https://highstylife.com/what-are-gentle-hair-ties-that-do-not-pull-at-night-and-why-your-current-one-is-probably-wrecking-your-ends/

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