6. DIY teeth whitener
Whitening our teeth is too expensive and a lot of the use of harsh bleaching agents that can wear away our enamel. Guess what? Yes, you are right! Banana peels can do wonders to our teeth. It can naturally and lightly whiten our teeth due to its potassium content. You only need to rub the inner side of the peel to your teeth every day for about two weeks. The result should start to show up after a handful of treatments.