A 45-minute, in-office chairside whitening system. Hydrogen-peroxide formula is available in either 24% for those with sensitivity or 30%. Can be used for full treatments or maintenance touch-ups. Features the patented G.L.O. (guided light optics) gentle warming heat and light technology to activate and accelerate the whitening gel for maximum efficacy, little to no sensitivity, and reduced chair time. For use with the GLO Chairside Whitening Hardware Kit. Made in the USA.