Teeth whitening is a common dental procedure that aims to lighten and brighten the color of the teeth. It is a relatively simple process that can be done either at home or in a dental office. At-home teeth whitening involves using custom-made dental trays filled with hydrogen peroxide gel that you can use at home. These trays need to be worn for a certain amount of time each day, and the process can take several weeks to produce results. In-office bleaching, on the other hand, is a quicker and safer option because it is performed by professionals. During the procedure, the dentist will use a special hydrogen peroxide gel in combination with a light source to accelerate the whitening process. The in-office bleaching procedure usually takes about an hour and produces immediate results. Some people may be sensitive to the whitening agents used, but otherwise, both at-home and in-office bleaching are relatively discomfort-less procedures. Ultimately, the choice between at-home and in-office bleaching comes down to personal preference and the amount of time and effort a person is willing to put in to achieve a whiter smile.