do not see any change on my teeth [SEP] i have not seen any change and i have been using it for one week but i would say this i like the fact that there is no aftertaste or smell to it but my gums are starting to hurt i will give it a few more days and if i do not see any change to the trash it goes the only warning is that you must use it at night because it will leave your teeth and gums somewhat gray blackish color i do not see my teeth polished or whiter