What is it: The ultimate in quick, easy, effective teeth whitening. Designed with a twist-and-apply brush tip, this pen contains a brightening formula that makes a significant difference in just one week. And, by enrolling in this auto-delivery plan, you can maintain your whiter smile with a new shipment approximately every 60 days for one year. Who is it for: Anyone who is on the go and wants the clean, fresh, young look that a white smile offers. Why is it different: This portable and easy-to-use whitening pen contains a unique ingredient that helps the formula adhere to the teeth and whiten effectively. Best of all, it's clinically proven to whiten teeth significantly in just one week with virtually no sensitivity. How do I use it: Twist the bottom of the pen to release the whitening serum through the brush tip. Brush the serum onto all visible surfaces of teeth using an up-and-down motion. Don't rinse, eat, or drink for at least 20 minutes to allow the serum to work. Use one to two times a day for seven days. From GO SMiLE.