I’ve got naturally curly hair, and I was constantly waking up with frizz and flyaways and the occasional knotted spot in the back of my head with my old pillowcases. I read that it’s much healthier for your hair to use a satin pillowcase, so I gave it a try. My hair has been in much better shape and actually still looks pretty good when waking up each morning since I started using these, and they stay nice and cool. Definitely worth buying, and I won’t sleep on a regular pillowcase again.