The desire for whiter teeth and attaining the associated ideal of beauty are probably as old as mankind itself. However, it is interesting to note that many patients are still hesitant and critical when it comes to tooth whitening. Questions about the possible risks for enamel and general oral health keep coming up. There are also concerns about irreversible sensitivities and related complaints. In these cases comprehensive counseling is particularly important. We inform patients that, contrary to numerous rumors, the enamel is neither removed nor damaged, because when professional whitening products are used, molecules are exchanged during the whitening process. During this process, oxygen radicals decompose the color pigments in the tooth and start the whitening process. In our practice, it is important for us to exclusively use products that do not cause enamel damage, as their mode of action is based on the exchange of molecules. Furthermore, we are careful to choose products based on potassium nitrate, which reduce dehydration of the teeth and thus counteract the formation of sensitivities during treatment. In our experience, sensitivities can thus be virtually ruled out. Should sensitivities nevertheless occur, they usually disappear again within a few days by themselves. To accelerate this, patients should drink plenty of water, particularly in the morning, to compensate for dehydration. In some cases, additional treatment can be carried out with a desensitizer based on potassium nitrate, such as UltraEZ TM, if necessary.