Do you consistently wake up with a bad hair day and creases all over your face? You can officially blame your pillowcase. Think about it: You spend about one third of your life in bed sleeping (or at least trying really, really hard to fall sleep). That's a lot of quality time with your pillow.

I hate to break it to you, but the beloved cotton pillowcase you've had since college actually creates a lot of friction against your hair. Reminder, friction is the root of all hair evil. I’m talking tugging on strands, major frizz and tangles, and even breakage. Turns out, that same friction can also take a toll on your skin over time, especially if you’re a side or stomach sleeper. Those temporary creases you see when you wake up can eventually lead to real fine lines and wrinkles.

Enter the silk pillowcase. It might sound like a frivolous luxury, but dermatologists and hairstylists have been recommending silk pillowcases for healthier hair and skin for years. Not only are they incredibly soft and luxe to sleep with, but the best silk pillowcases, which are made of the smooth, natural fabric, have much more slip than traditional bedding textiles. So rather than causing damage-inducing friction, your hair and skin glide over your pillow easily.