The picture I linked is of a buckwheat pillow. Had no idea they were a thing before today.
What about silk or bamboo pillow cases?
I’ve only ever really used cotton pillow cases and cotton stuffed pillows. I recently upgraded to a foam pillow that I’m enjoying.
My hair frizz went down noticeably when I switched to silk pillowcases. I plan on sticking with them for that alone, bonus that they feel nice too.