this review title is: did not work for me and the content is: i brush my teeth four to five times a day because i wear invisalign braces after several weeks of using the colgate optic white i do not see any difference in the color of my teeth this toothpaste does leave your mouth feeling fresh so that is the only positive i can say about this product it does not whiten as promised.there are other information for this review, one is this reviewer did not purchase it and the other is 11 people think this review is helpful.