As patients request more whitening treatment options, dental practices are beginning to expand their whitening services and products. This aspect of dentistry can not only increase practice profitability, but it can also draw more patients into the practice. With a range of information about tooth discolorations, whitening treatments, and whitening products, confusion is common among dental professionals. When advising patients on appropriate options for both vital and non-vital teeth, clinicians will first determine the cause of the condition, then evaluate the different whitening agent delivery methods (in-office, prescribed at-home, and over-the-counter treatments), along with their indications and contraindications, and identify strategies for managing any side effects.