Teeth whitening is a process, not an event! Which means you need to keep up a monthly regimen to maintain those pearly whites. That's why we offer a convenient auto-ship membership program so you don't have to remember to keep up with your teeth whitening. Our membership program is 100% on your terms, so you can cancel anytime hassle free with the click of a button. Or, if you just want to try our product out once before joining the monthly club that's cool, too!