Why Teeth Naturally Become Dull Over TimeTooth discoloration usually falls into two categories:Extrinsic (surface) stainsThese come from foods and drinks like coffee, tea, soda, berries, and wine, as well as tobacco use. They cling to the outer enamel layer.Intrinsic (internal) discolorationThis occurs when enamel thins with age, allowing the yellowish dentin underneath to show through. Certain medications and trauma can also contribute.According to a 2023 report in the Journal of the American Dental Association, nearly 3 out of 4 adults show visible tooth discoloration, with noticeable changes becoming more common after age 35.Many over-the-counter whitening products rely on peroxide, which can temporarily whiten teeth but often cause sensitivity — especially with repeated use.The Trending Natural Option: Banana Peel–Based Brightening PasteA widely shared home remedy combines banana peel with a few simple kitchen ingredients to help polish teeth and lift surface stains gently.People are drawn to this method because it:Uses natural, affordable ingredientsAvoids strong bleaching agentsFeels less abrasive when used correctlyWhy Banana Peel Is UsedThe inner white part of a ripe banana peel contains trace minerals such as potassium, magnesium, and manganese.