Do not consider using tooth bleaching products as it contains abrasive agents, which is not good for tooth enamel. In the whitening procedure, firstly the dentist protects the cheeks, lips, and gums. Then, the medical practitioner applies a whitening gel on the tooth surface. By passing the blue light over the teeth, the whitening process gets activated. Due to the strong gel, the patient of the in-chair whitening may experience a bit of temporary sensitivity. However, it entirely depends on the nature of the teeth of the patient. While in some people, the sensitivity keeps lingering after the procedure for a day, some patients do not feel such a thing.