My husband absolutely loves this product. He says it is the only toothpaste that makes his mouth feel fresh and clean afterwords. He hasn't noticed any difference in the whiteness of his teeth but seeing as he is a smoker he smokes more than he brushes
I found this product worked GREAT for whitening, but I continued use and after two weeks, it was wearing down my gumline so I stopped using it so frequently. I now use it once a week on top of daily brushing, and its great!!