KöR Teeth Whitening is widely regarded as the most effective remedy to lighten the shade of teeth 10 times than conventional methods. It is considered to be the world’s best teeth whitening system as it has been developed after several years of research. Kor whitening system uses a special Dual-Activated, Tri-Barrel Hydremide Peroxide whitening gel. It is refrigerated continuously from the time of manufacture until it arrives at our dental practice, where we would apply it on your teeth. The effectiveness of the gel is far greater compared to any other teeth whitening gel.