Delicate teeth? Start with low-peroxide gels, shorten sessions
https://privatebin.net/?09f5996c60e8a251#DAKeSdmsvtai21RqRsVaH1EFi6ucoFrEYuXDwEA1EfN4
Sensitive teeth? Start with low-peroxide gels, shorten sessions, and pre-treat with desensitizing toothpaste for 2 weeks before beginning whitening.