Teeth whitening is a popular cosmetic dental procedure that enhances the brightness of teeth by removing stains and discoloration. It can be done using in-office treatments, at-home whitening kits, or natural remedies. The process involves applying a bleaching agent, usually hydrogen peroxide or carbamide peroxide, to break down stains and lighten tooth color. Professional teeth whitening offers quicker and more effective results compared to over-the-counter products. However, maintaining good oral hygiene and avoiding staining foods and beverages is essential to prolong the results.