Toothpaste is something most of us use daily. But did you know that most conventional brands contain at least one harmful ingredient? Ingesting a small amount of these ingredients twice a day, adds up ...

This article was first published in the September 2015 issue of WIRED magazine. Be the first to read WIRED's articles in print before they're posted online, and get your hands on loads of additional ...

Sure, you might say: But why would I make toothpaste when I can buy it at the store? The answer: because The Descendants star/SIY forest nymph Shailene Woodley does it, and she was kind enough to ...