There are different types of teeth whitening methods available. One common method is in-office teeth whitening, such as Zoom whitening, which is performed by a dental professional. Another option is at-home teeth whitening, which involves the use of custom-made whitening trays and professional-grade whitening gel provided by a dentist. Over-the-counter teeth-whitening products, including teeth-whitening toothpaste, whitening strips, and whitening pens, are also available for use at home.