Now that's a no-brainer.
Features: WHITENING PENS 4 whitening pens for 6 months of your brightest bright Only 5 minutes, twice daily for one week Helps remove years of tough stains in just 1 week Same enamel-safe whitening agent used by dentists No-mess brush applicator Fast-absorbing gel Cool mint flavor LED LIGHT Made with the same technology as the lights used by dentists Hands-free, smartphone-powered LED light (works with iPhone and Android) Portable and easy to use – brighten wherever, whenever Accelerates the power of our bright on premium teeth whitening Low battery consumption.