this review title is: do not buy this and the content is: this is the absolute worst product i have ever used not only did i not see any results whatsoever the use of this item is extremely messy you will be way better off using a whitening toothpaste or whitening gel i find the reviews unbelievable this product is a joke.there are other information for this review, one is this reviewer did purchase it and the other is 3 people think this review is helpful.