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

https://wiki-burner.win/index.php/Why_Do_My_Curls_Lose_Definition_Overnight%3F_A_Realist%E2%80%99s_Guide_to_Waking_Up_Better

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