(Concern) Teeth whitening

Just as people's skin colors vary, do tooth colors also differ? ㅠ

It depends on eating habits, but the color of teeth can also vary.

I don't want teeth that look like pure white artificial humans.

But I still want to have whiter teeth.

When you search for whitening products, it seems like they are applying a medication to whiten the teeth.

I'm curious whether dental clinics also handle medication treatments or if they are completely harmless to the human body.

I'm not sure if there is a whitening effect, but is it safe for health?

I'm curious about how long the whitening effect lasts.