Reduce sensitivity throughout whitening with desensitizing gels or tooth paste containing potassium nitrate or fluoride

https://devinjdan182.cavandoragh.org/can-you-bleach-teeth-with-braces-a-guide-to-timing

Lower level of sensitivity throughout whitening with desensitizing gels or toothpaste containing potassium nitrate or fluoride, and follow day of rest in between sessions if needed.