A botanical tooth whitener composition comprises a quantity of camellia oil, a flavoring, and a thickening agent. The composition is comprised of natural substances and is generally free of chemical additives commonly found in related products. The composition may be used to reduce tooth discoloration or staining by brightening the teeth exposed thereto. A method of treating discolored or stained teeth comprises the steps of obtaining a botanical tooth whitener composition, dispensing a quantity thereof onto or into an applicator, and applying the composition to a tooth or teeth via the applicator. The applicator may be any of a spray bottle, brush pen, toothbrush, and dental tray.