My dentist laughed when I showed him the kit from Snow. He stated that there is no proof that the LED light makes any difference. And make sure your READ their return policy. There isn't any.
They use the word "guarantee," but the guarantee does not give you your money back.
Also, take a good look at the before and after pictures. The color of the phot's look difference, as if someone retouched the picture.
Bottom Line: No, I would not recommend this to a friend
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