Stop waking up with bedhead. Cotton causes friction, leading to breakage and...

https://wiki-book.win/index.php/What_Kind_of_Hair_Tie_Should_I_Avoid_at_Night%3F_A_Beauty_Editor%E2%80%99s_Guide_to_Protecting_Your_Strands

Stop waking up with bedhead. Cotton causes friction, leading to breakage and frizz. Switching to silk or tying hair in a loose, messy bun helps maintain your hair’s health overnight