Wake up with less frizz by swapping your cotton pillowcase for silk to minimise...

https://hotel-wiki.win/index.php/The_Sleepover_Survival_Guide:_How_to_Reduce_Mechanical_Stress_on_Your_Hair_at_Night

Wake up with less frizz by swapping your cotton pillowcase for silk to minimise friction while you sleep. If your hair is long, try a loose braid or bun