In my search for an insomnia cure, I found SatinSilk -- a specially-design pillow case that, wait for it, is designed for skincare. No, there isn't any slow-release chemical that helps your skin but simple old silk. It's based on research that cotton pillow-cases causes more friction with the surface of skin, which causes more wrinkles and can inflame skin rashes etc. I also found out that silk/satin cases prevent damage to our hair (when you wake up and find countless hair strands on your pillow, it's not a good thing) and while I am not at 'laugh lines' stage, I do get acne and it does what it says on the tin! I am not finding as many broken strands of hair either and I think it may be curing insomnia but that's not on the tin. The cases are eco-friendly and also come in eco-friendly package but the price range is steep -- £40 for a pillowcase (though they have a Christmas offer of £60 for two cases) but it's not like you buy pillow cases on a monthly basis, unless you are Adrian Monk. Unfortunately, it's only available in the UK at the moment, but you could always see if they will send it abroad. Because I can't extoll the virtues of this pillowcase enough, I will settle for saying Must-Buy!