Dental bleaching is a cosmetic procedure aimed at lightening the color of teeth. It involves the use of bleaching agents, typically containing hydrogen peroxide or carbamide peroxide, which penetrate the enamel to remove stains and discoloration. This treatment can be performed in a dental office or at home using custom trays. The process is generally safe and effective, but results can vary based on the individual's dental health and the type of stains. It's important to consult with a dentist before starting any bleaching treatment to ensure it is appropriate for your teeth and to discuss potential side effects.