If you're ready to protect your curls overnight, you've probably hit the same question many people do: satin bonnet vs satin pillowcase, which one should you choose? Both give your hair a smooth surface to rest against, and both can help reduce friction while you sleep. But they work in slightly different ways, and the better fit depends on how you sleep, how you style your hair, and what you want your mornings to feel like.

This guide breaks down how each one fits into a night-time routine, who tends to prefer which, and why plenty of people with curly, coily or wavy hair end up using both.