Waking up with a bird’s nest? It’s often the friction from cotton pillowcases...

https://gunnerawsh736.cavandoragh.org/how-to-protect-fragile-hair-overnight-without-pulling-it-tight

Waking up with a bird’s nest? It’s often the friction from cotton pillowcases causing that morning frizz. Switching to silk reduces drag, but the real difference is popping your hair into a loose silk scrunchie or a relaxed plait before bed