Teeth whitening results can differ significantly, depending on the principles of contact time and concentration of the bleaching agent/active ingredient you are using. Most professional teeth whitening from your dentist will be a minimum contact time of 30 minutes, with a minimum of 6%hydrogen peroxide concentration. A professional kit is prepared with custom made trays, to avoid chemical burn and damage to the surrounding gums. In comparison, store bought bleaching toothpaste only contains 1% hydrogen peroxide and is only kept on the teeth for around 2 minutes while brushing, meaning the results will not be effective.

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