How can you whiten your teeth with banana peel?

To whiten teeth with banana peel, rub the inside peel of a ripe banana for two minutes over the teeth to be whitened. Banana peel may have been used as an early form of natural tooth whitening, according to the British Association of Clinical Dental Technology.

According to instructions provided by Southeast Family Dental in Indianapolis, it is important to rub each tooth to be whitened thoroughly and to follow up the process with a good brushing with toothpaste. Both sources suggest that the minerals potassium, magnesium and manganese, present in high concentrations in the peel, are absorbed by the teeth to promote whitening.