I've been using spotlight products for many years now, I absolutely love the sonic toothbrush and will never go back to using a normal toothbrush again. I have used all their teeth whitening products and I am absolutely in love with the teeth whitening powder combined with the whitening tooth paste, mouth wash, floss and whitening strips . However I do find to really see results with using the teeth whitening strips should be used longer than the 14days as the level of teeth whitening is fairly low to other teeth whitening products I have used but do find these are great to use for very sensitive teeth.