Title: Disappointing...
Product review: I received a Go Smile treatment while on a Carnival cruise. I then bought the "maintenance" product. I found that the use of the product did very little. In fact, I switched to Crest PRO EFFECTS whitestrips and saw a remarkable difference. The Crest strips did more in two days than the Go Smile had in one week. My recommendation is to go with the Crest PRO EFFECTS and skip the Go Smile.
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