There are two ways to make your teeth white quickly: first, cold light whitening, cold light whitening is a more mature technology, basically no harm to the tooth surface, you need to apply whitening gel, cold light irradiation, generally about 40 minutes, the teeth will be whitened by two shades. But it has certain side effects, that is, it will cause demineralization of the tooth surface, and the whitening effect is not lifelong, usually about 3 years will gradually return to the original color, and need to be whitened again. Secondly, the enamel layer on the surface of the teeth is worn off and the aesthetic restoration of veneers is carried out. It has the advantage that it can directly achieve the color that the patient is satisfied with, but a certain amount of tooth body needs to be abraded.