I already turned in my proposal for my science fair subject, its "Alternatives for teeth whitening" but i dont know exactly what to do. How lemons whiten your teeth? How strawberries whiten your teeth? PLEASE, FEEL FREE TO SHARE YOU IDEAS! ill be glad to read. thanks! :D
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An alternative to whitening your teeth is to darken the skin of your face. The contrast will make your teeth look whiter. See the optical illusion below where square 'A' looks whiter than square 'B' but they are in fact the same shade.
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