Morning frizz often starts at night. Cotton causes friction that snaps fragile...

https://bizzmarkblog.com/do-i-need-silk-to-reduce-frizz-or-can-i-just-change-my-habits/

Morning frizz often starts at night. Cotton causes friction that snaps fragile hair. Switching to silk helps, but the easiest fix is simply wearing your hair in a loose, low braid to minimise movement. It’s a simple habit that really protects your ends.