Of course you should always remove your aligners to eat or drink (this includes chewing gum). The beauty of invisible braces is that you can eat and drink whatever you want, though. Hello popcorn, caramel, and chips! Invisible braces are the easiest way to keep your mouth fresh and clean while still getting the benefits of achieving straight teeth. The key is just to make sure your teeth are flossed and brushed well between every meal and snack.