I have been struggling so much with my teeth, I have tried so many different products, and Zing! is the first toothpaste that has visibly improved them. They are whiter, look healthier, and after 1 month, I have noticed that some of the erosion at the necks has been repaired. A real game changer, and on top of being a great product, it is also an ethically sound choice, in more than one ways. Highly recommend.