When I got teeth whitening done before, it was so sensitive and felt a bit painful that I couldn't go back after just two sessions.

Are there any dental clinics that offer whitening that is less sensitive and less irritating?

I really hate that sensitive feeling, so I felt terrible both during and after the procedure.

I want to get a whitening treatment that is gentle and doesn't cause sensitivity, while still giving a natural tone-up effect.

Maybe it's supposed to be sensitive and I just can't stand it... Anyway, if anyone has had this done, please share your experience.