If your hair looks like it fought a battle overnight and your skin feels creased in the morning, your pillowcase might be the culprit. Cotton sounds innocent, but it’s basically a moisture thief. It pulls hydration from your skin and creates friction that leads to frizz, breakage, and those sleep lines that slowly turn into fine lines. So the real question is not whether to switch, it’s: Silk or satin? Which one actually works? What’s the Real Difference Between Silk and Satin? This is where things get slightly sneaky. That means: They feel similar, but silk behaves more like an extension of your skincare routine. Which One Is Better for…