Where can i buy teeth whitening stuff for cheap but will still work well??!?

I want whiter teeth & a hollywood smile lol. Can anyone tell me where i can get some that actually works well and is resonably priced. (UK SHOPS)
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umm... u can get crest dental whitening strips, they are sold at any store mostly and you can get different strengths depending on what you wanna pay for it. it usually around like 30 bucks :)
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