Put it on, press power and GLO! GLO Science, a break-through and award-winning teeth whitening system, has you covered with their revolutionary technology and unique devices. Each product uses patented, Guided Light Optic (G.L.O.) technology to deliver the quickest and most effective results. It fights stains by trapping the whitening oxygens on the surface of the tooth. With unique formulas that protect against sensitivity, everyone can have a radiant smile!