Teeth whitening is a way to make teeth look better from the outside. Bleach or other things are used to make teeth look whiter. Some foods, like coffee and cigarettes, can make your teeth look yellow. Bleaching agents help make your teeth lighter in colour and whiter and brighter. A dental exam by the dentist will help you figure out how to whiten your teeth. Teeth bleaching, also known as teeth whitening, is the least expensive, least invasive, and most cost-effective way to improve your smile. This is why so many people choose teeth bleaching to improve their smiles.