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Whitestrips are not for use by children under the age of 12, while Crest Whitestrips Supreme should not be used in persons under the age of 18. [3] The active ingredient is hydrogen peroxide . [ citation needed ]
Many different types of whitening strips are available on the market, after being introduced in the late 1980s. [1] Specific whitening strip products have their own set of instructions however the strips are typically applied twice daily for 30 minutes for 14 days. [1] In several days, tooth colour can lighten by 1 or 2 shades. [1] The tooth ...
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The strips contain hydrogen peroxide, a cleaning agent that's enamel-safe and dentist-approved. The brand claims that after that 22-day period, your teeth will be 20 levels whiter than when you ...
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