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What Teeth Whitener Is Most Effective Essay Preview: What Teeth Whitener Is Most Effective Report this essay The effectiveness of teeth whiteners varies with each different product. People use teeth whiteners to brighten their smile. Teeth whiteners use the power of peroxides, calprox, hydrated silica, polyvinylpyrrolidone, potassium nitrate, sodium bicarbonate, fluorides, sodium tripolyphosphate, and strontium.