Decrease sensitivity throughout whitening with desensitizing gels or toothpaste consisting of potassium nitrate or fluoride
https://www.mediafire.com/file/o3befn9icv9m7xv/pdf-54850-44416.pdf/file
Reduce sensitivity during whitening with desensitizing gels or toothpaste containing potassium nitrate or fluoride, and follow rest days in between sessions if required.