Question: how to whiten your teeth at home fast without baking soda?
Answer: Rub banana, orange, or lemon peels: To perform this “trick”, take a banana, orange, or lemon peel and gently rub it on your teeth. Keep rubbing it for about 2 minutes, then thoroughly wash your mouth and brush your teeth. The peels of these fruits contain citric acid, which theoretically helps in teeth whitening.