You may find as you walk into local Spa’s here in Vancouver, as well as malls, an offer for a great deal on teeth whitening! Buyer beware… the people offering these services have had no training, no license, have taken no course, no test or exam or been trained in proper infection control procedures. The use of certain peroxides on teeth requires some education! Not only can it be harmful to your tissues, you may have dental issues that may affect whether or not you are good candidate for the procedure. Only a trained dental professional can screen you for this and offer whitening treatments in a safe and effective manner!!!