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Review title: effective and easy
Product review: Hey there, i am a teenage who wanted to whiten my teeth but i didnt know where and how. I found these crest white trays and bought them when they were only two dollars. Anyway, i used them the first day that i got them and they work great! It only took about three days to get my teeth as white as a piece of blank paper. by the seventh day, my teeth were glowing. Before i got these trays, however, i read other reviews that talked about stinging of the teeth and white spotting. In my experience, there was a bit of a tingling sensation but it was nothing painful or long lasting. Also, the bleach on the tray did leak down to my gum one time and it did create a white spot, but that is nothing to worry about because it is perfectly normal, it doesnt hurt, and it goes away within the hour. So, all in all, this product worked fantasticly and it lasted al very long time. in fact, my teeth are still white and it has been months sinse i last used the product. i strongly recommend! good luck!
