How does it work?Whitening your teeth has never been easier. Trèswhite’s innovative preloaded whitening trays are simply inserted onto your teeth for a comfortable fit. The thin membrane tray adheres to the teeth and remains securely in place for the 60 minute wear time. Yes, only 60 minutes, once a day. It’s that easy. Is It Safe?Trèswhite is a perfectly safe way to whiten your teeth. In fact, Trèswhite contains both potassium nitrate and fluoride which has been proven to prevent cavities and remineralize the teeth. When will I see results?Trèswhite is the most powerful take-home product available. Because it contains such a high concentration of peroxide, results are achieved rapidly. Some people see results in as little as one day. Now that’s fast.