Abstract: A teeth whitening system with an improved tray and manner of application is provided. The teeth whitening tray of the present system comprises a U-shaped tray configured to receive a set of upper and lower dental ridges, or teeth, of a user. When in use, the user inserts the tray into his or her mouth in the appropriate manner, with the upper and lower dental ridges of the user being coated with the appropriate whitening agent. A plurality of LED lights are activated along the interior of the teeth whitening tray. The LED activation in turn activates the whitening agent and effectively whitens the user's teeth. A plurality of ridges is provided on the teeth whitening tray to ensure security of the teeth whitening agent during use, and upper and lower lip platforms are provided on the exterior of the teeth whitening tray to ensure the user's lips and other sensitive areas of the mouth are protected from the whitening agent during use.