What teeth whitening strip product do you suggest?

I’m 15 years old and my teeth aren’t exactly white, i’m thinking of buying some whitening strips product ( not the floss, or any of those other stuff) so which ones would you recommend? Also it has to be available in like a common store like walgreens, or something cuz i can’t shop online. oh ya i forgot to ask is the crest whitening strips that makes your teeth very sensitive a big problem? and does it have a long term effect?
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Crest Whitening. Recommended by my orthodontist and it works!
They don’t make your teeth sensitive as long as you are not brushing your teeth right before using them every time.
The crest whitening strips make my teeth sensitive. If you are looking for something from your local store, I don’t know what to tell you b/c most of that stuff is poor quality. I would recommend finding someone who can order professional whitening products online. Here’s a good site with teeth whitening product reviews.
Best of luck to you
Here are some suggestions, I think you should read them before you decide: