which teeth whitening strips?

[Lotsofsausage]

My teeth aren't too bad but whitening toothpaste isn't cutting it and they're not so bad that I want to fork out for dental whitening, but I'd like to lift them a shade or 2, especially the K9 ones.
Can anyone post a link to reasonable strips they have bought online? I heard the crest ones are good - I think - but I can't find any on amazon!

Bump

My dentist quoted me £350.... some dodgy looking place offers it for £50 per session - thought I would try strips instead

They’re all shit in the U.K. but if you know someone going to the US soon you could ask them to get you Crest White Strips (which are not legal for sale in the U.K. as they actually work). Otherwise go see the dentist. I wouldn’t trust the £50 place, you don’t get second chances with your enamel.

Oh and don’t be tempted to buy the crest ones from some dodgy third party seller. They will probably be fakes and they can be really dangerous as a result (think burning a whole in your mouth dangerous).

HOLE rather (please excuse terrible grammar)