Waking up with knotty hair? It’s usually friction from cotton pillowcases....

https://oscar-wiki.win/index.php/Do_I_Need_Silk_to_Reduce_Frizz_or_Can_I_Just_Change_My_Habits%3F

Waking up with knotty hair? It’s usually friction from cotton pillowcases. Switching to silk helps, but a loose braid is just as effective at protecting your ends overnight