As a dental assistant, I can agree with Adriana K., as whitening toothpaste does cause harm to the enamel. However, if you have a special event coming up, it is ok to buy this a couple of weeks to a month before and use it daily. An important thing to remember while brushing is to use a soft bristle brush, and not to brush too hard! After that event, you can go back to your normal toothpaste. If you notice your teeth or gums begin to feel sensitive, or you feel uncomfortable when you drink hot or cold beverages, stop using the toothpaste right away.