What harm does cold light whitening do to teeth?

The harm of cold light whitening to teeth has the following points: 1. Show sensitivity, cold light beauty teeth will become more sensitive due to cold light stimulation during treatment, and show toothache symptoms. But these symptoms are normal physiological phenomena, which can be eliminated automatically within a period of time, but for serious patients, they will not subside. 2. Temporary decalcification phenomenon, in the process of cold light beauty teeth, will also show temporary decalcification. If you do not get maintenance or improper maintenance after cold light beauty, it will hurt the gums, so it will cause damage to the gums. 3. Enamel development is incomplete, and cold light whitening may also lead to enamel development, which will lead to wear and tooth cracking.