If you shy away from whitening because it hurts like hell—we get it, some products can be pretty harsh—then this paste was made for you. Sensodyne Extra Whitening ($5, drugstore.com) breaks up stains while building a protective layer that blocks pain caused by hot, cold, and sugary foods. For a deeper-feeling clean, opt for Sensodyne Iso-Active Foaming Gel Whitening ($8, drugstore.com). It bubbles up when you brush, making it easier to hit hard-to-reach areas.
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