It’s easier than ever to find organic cotton bedding in big-box stores and online shopping sites. But other than choosing to help farmers who grow cotton organically, what’s the real benefit to sleeping on organic sheets? Conventional cotton bedding is often bleached and then dyed using heavy metal dyes that can have formaldehyde resins. And if you choose sheets that are labeled “wrinkle-free,” they are also treated with a chemical substance that is a suspected carcinogen. If you can’t find organic cotton sheets, look for light-colored bedding that is not wrinkle-free for a greener sleep.