Teeth whitening, also known as teeth bleaching, is a cosmetic dental procedure that uses various whitening agents to remove stains and lighten teeth color. The process primarily targets extrinsic stains caused by factors such as smoking, drinking coffee, tea, or red wine, and poor oral hygiene. Tooth bleaching involves the use of a stronger whitening agent that penetrates the teeth’ enamel to remove intrinsic stains caused by factors such as aging, genetics, and medication use.