Stop waking to a bird's nest. Constant friction from cotton causes frizz and...

https://xeon-wiki.win/index.php/How_to_Keep_Your_Blowout_Looking_Salon-Fresh_for_One_More_Day

Stop waking to a bird's nest. Constant friction from cotton causes frizz and stubborn morning tangles. Small habits, like a silk pillowcase or a loose braid, protect your hair while you sleep. It is an easy way to keep locks smooth