laser light home teeth whitening?

i checked the website www.toothwhitening4all.com and they have a new product the laser light home teeth whitening. I just liked to ask anyone who have bought and tried it. Is it effective? I haven't tried any tooth whitening products or done any procedure yet but i'm planning to. but i don't know the best procedure or product. Don't want to waste money if it's not going to be effective. tnx again
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i havent tried it yet, n i dun plan on doin so. what if something goes wrong?
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