wow [SEP] i have tried all the different kinds of teeth whitening from white strips uc lights tooth paste and even baking soda and peroxide to no avail didn t even notice a difference or not much at all this is the best product so far to get my teeth white and not irritate my gums the first time i used it i could tell a difference each time there after i can also see a difference now i m using it once a week to keep my teeth white get some and try it for yourself you will be happy you did