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This was and expensive and stupid mistake--one that I certainly won't make again. It wants you to believe you can actually accomplish some whitening with this pen, especially with the aid of the scrubby side, but that is very misleading. And how do "antioxidants and vitamins" have anything to do with whitening? Answer: they don't. And I read somewhere, maybe on the packaging, that it "promotes fresh breath." How? Just by the slight minty flavoring? That would be like telling someone to stand next to a box of baking soda to reduce body odor. Tangentially related, and not the least bit effective. I flat out hate this product.
My teeth did not become whiter, nor did they remain whiter thanks to this after a round of at-home bleaching. And forget about breath-freshening. The minty flavor stays with you only until the moment your saliva goes down your throat......so less than a minute, maybe? Seriously, don't waste your money on this product like I did....