dr song teeth whitening [SEP] dr song teeth whitening was not a winner for me my teeth are very sensitive even after using the remineralization gel my teeth were hurting it was gawd awful painful i cannot blame the product for my sensitivities however i can when it comes to effectiveness or lack there of in this case i gave the remaining product less treatments to one of my sons he was diligent about how he went about whitening his teeth following instructions to the letter the results were disappointing although there was a slight difference in the appearance of color it was hardly significant enough to deem the product a success in the end i purchased crest whitening strips for my son now there is a success story