The product has 42 reviews, there are only 5-star reviews. All of these reviews have been submitted within a few days, alone on 01 February, 26 pieces. Almost all product reviewer who only that product or products exclusively from Crystal Smile rated (as of 02/03/2015). True reviewers have mostly written her mind already several articles. A very Clever Copy and paste the presumably predefined ratings even the word "TEXT" with taken.
Moreover, not a single vote is marked as "Verified", ie not one of these reviews has bought the item on Amazon.
I can hardly imagine that there are only euphoric feedback in tooth whiteners, the whole thing seems to me very manipulated. I hope that one or the other interested party clicks on this 1-star rating and then makes his own thoughts about whether the many great reviews actually correspond to reality.
Addendum of 02/06/2015: In the meantime, a couple of reviews have already been deleted, so that the number has been reduced from 42 to 37 currently.
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Addendum of 24/02/2015: Here is a sentence was deleted by Amazon. This shows that employee Amazon has rated this review. Apparently it is not considered necessary to do something obviously manipulated reviews, although in the meantime more are still added. These correspond to the same pattern described above, even if you have now given themselves a little bit more effort. Hopefully emfinden enough readers that opinion as helpful, so that it will still be displayed at the front and does not disappear in the rear section. I hope that potential customers look and order not only superficially on the positive evaluation, since this may probably lead to disappointment.