Your pillowcase is a bacteria and oil magnet. If you’ve got dry scalp, dirty pillowcases can make it itchier and flakier. Swap it out every 3 days.
Use a silk or satin pillowcase. It’s gentler on your hair and doesn’t absorb as much moisture. Cotton? It’s like a thirsty sponge for your scalp’s oils.
And while you’re at it, wash your hairbrushes. Yeah, the ones with dust bunnies on them. Clean them with mild soap—do it now. I’ll wait.