I heard that there is tooth sensitivity as a side effect of teeth whitening. Is it okay?

I am a job seeker. These days, as part of my interview preparation, I am also paying attention to my appearance.

Among them, I think teeth are very important, so I am considering teeth whitening.

I am currently very 고민 about the side effect of dizziness.

I do have a dentist I usually go to, but I'm worried because the side effects are a bit scary.

Has anyone tried teeth whitening?

I'm curious whether the side effects are really severe or if they are not something to worry about much.

I like iced drinks, but if I suffer from side effects like a sore throat, I think I would be really very sad ㅠㅠ