Waking up with frizzy hair is often just down to friction. Standard cotton...

https://www.bookmark-step.win/wake-up-with-less-frizz-standard-cotton-pillows-create-friction-that-ruins

Waking up with frizzy hair is often just down to friction. Standard cotton pillowcases can be tough on strands, so swapping to silk helps them glide while you sleep. For extra protection, try a loose plait or a soft bun