I'm curious about teeth whitening.

I'm quite interested in teeth whitening because my teeth are slightly yellow.

There are many opinions that teeth whitening is bad for your teeth, so I'm hesitant to get it.

I'm curious about how many sessions of teeth whitening are needed to see a brighter result and how long the whitening effect lasts.

You need to manage it well in order to maintain it for a long time, right? Haha