Decrease sensitivity during whitening with desensitizing gels or toothpaste containing potassium nitrate or fluoride
https://www.mediafire.com/file/efo1zs05lbdd1rj/pdf-6611-3620.pdf/file
Minimize sensitivity during whitening with desensitizing gels or toothpaste consisting of potassium nitrate or fluoride, and follow rest days between sessions if needed.