I used this for well over 4 week's and to be honest I personally did not notice a difference. I went to the extent of even taking before and after photo's, and there was very little change.
I didn't really like the texture of the toothpaste, To me It was kind of grainy and felt gross on my teeth.
The one positive I have with this toothpaste Is that the taste of the strong minty flavour was pleasantly refreshing. It did leave my mouth feeling clean though. I don't think It Is worth the price and will not purchase It again.
I'm still on the hunt for a goof whitening toothpaste.
I received 2 of these in a sample box and thought awesome! I was disappointed with the taste, it was a very weak minty taste and felt it made no difference to my teeth. It felt like I hadn't cleaned my teeth after use and the minty feeling faded quicky. wouldn't purchase it again