I’ve had tooth whitening once before and it didn’t seem very effective or last longer than a few weeks.
A very fancy dental practice in an expensive area near me offers KOR brand whitening. It’s about five times more expensive than my regular dentist whitening. It involves getting moulds made, wearing them overnight with special solution for a fortnight than a final treatment in the dentists office. The results are alleged to be very good and long-lasting. Has anyone used this KOR treatment? Any feedback or experiences? I’m very tempted but it is a lot of money.