Yes, it might sound a little bougie, but if you make the switch from regular pillowcases to a silk pillowcase your hair and complexion will really improve. Silk is a very soft, smooth, natural material, so it does not snag your skin or tug at your hair (something which can quite easily happen with standard cotton sheets and pillowcases). It is also a breathable substance, meaning that your body can perspire whilst covered, and also allows the air to circulate under the pillow, keeping you wonderfully cool and refreshed. It is also a natural hypoallergenic substance, meaning that it will not cause any reactions for most people.