Teeth whitening when teeth are weakㅠㅠ

Is it also influenced by genetic factors?

Tooth staining occurs regardless of brushing. >.<

So, I also tried home care teeth whitening.

In fact, the effect is minimal and the usage process is cumbersome.

Eventually, it's buried somewhere in the house.

Honestly, at the dentist I go to, my teeth are

Since it's quite weak, teeth whitening is not recommended.

These days, I'm still contemplating whether I should try it at least once!

If you undergo teeth whitening at the dentist

How many times do I need to take it for it to be effective? 😢