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

https://theaustralianpost.com.au/protecting-hair-while-sleeping/

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.