(Concern) Is teeth whitening effective?

Have you tried teeth whitening? Was it effective?

How long will the treatment process take?

It seems like applying medication to the teeth, so does that mean I have to do it for a lifetime?

It's hard to become like a celebrity, but I heard they got laminate veneers. Is that true?

The cost of laminate is expensive, and since teeth are also removed, that might be a bit problematic, right?

I wish my teeth could be as white as a celebrity's. That probably means I need veneers, right?