I tried the type where the dentist made moulds of my teeth and I put bleach in them. I only did it once, because although I was really careful when putting the bleach into the moulds, it somehow got into my throat and made it burn. It was really unpleasant. A friend of mine also tried it and the same thing happened; she said she wouldn't do it again.
I don't know whether to give it another go, but don't know how I would avoid the same effect?!
Googling zoom teeth whitening, people say it's extremely painful, and made their teeth ultra sensitive.
I wouldn't want to use whitening strips, as they are apparently abrasive and bad for teeth. Also, someone I know uses them and they are making her teeth translucent, which doesn't look good.
Are there other types of teeth whitening?! So many people have whitened teeth - I wonder what they do?!
Thanks so much for any advice!