How long can cold light whitening teeth last?

Cold light whitening teeth can generally last for about one to two years, and the maintenance time is not fixed. There are certain individual differences. The maintenance time of whitening effect is related to daily eating habits and tooth cleaning. If you eat dark foods or smoke habits frequently in daily life, teeth cleaning is not done properly, it is easy to cause tooth discoloration, and the maintenance time will be shorter. If you rarely eat dark foods, and do not smoke, do not drink coffee and strong tea, teeth cleaning is better, the effect of cold light whitening can be maintained for a long time. Cold light whitening teeth is not once and for all, daily tooth maintenance is also very important to maintain whitening effect.