Bleaching your teeth may help you attain that smile you’ve set your heart on. But if you overdo it, that will bring you the risks below.

        Hypersensitivity. Teeth bleaching can make your teeth more sensitive. This is the most common complaint, your teeth can become sensitive to hot and cold. Fortunately, hypersensitivity does usually go away over time.

        Oral irritation. Your gums, palate, and throat can become irritated from the bleach, and some people also get nauseous from swallowing some of the solution. These side effects also subside after you stop using the bleach.

        Tooth enamel erosion. If you use a bleaching kit for too long or bleach too frequently, it's possible to wear away the outer coating of your teeth. 

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