Teeth whitening and bleaching are cosmetic dental treatments aimed at removing stains and discoloration from teeth, enhancing their appearance. Whitening typically uses hydrogen peroxide or carbamide peroxide to break down stains, while bleaching involves stronger agents for more significant results. These treatments can be done at a dentist’s office or with at-home kits. Regular whitening can improve smile brightness, but it’s important to consult a dentist to ensure safety and effectiveness.