Stop wake-up frizz by reducing night-time friction. Standard cotton pillowcases...

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

Stop wake-up frizz by reducing night-time friction. Standard cotton pillowcases can be rough, causing breakage. Swap to silk or secure your hair in a loose, comfortable braid before bed. It’s a simple, practical way to maintain hair health while you sleep