Transporting loads of foodstuffs and abrasive sugar snacks over your pearly cobblestone mouth roads can result in potholes and bridge problems. Maintain your digestive highway with today's Groupon: for $99, you get four 15-minute in-office teeth-whitening sessions at SmileLabs (a $396 value).

Via a sophisticated whitening system that is noninvasive, nonburning, and virtually pain-free, SmileLabs helps mouth bones obtain their optimal genetic potential of whiteness with the Total White Package. Just like a proper handshake, each one of the four gel applications lasts 15 minutes, during which the combination of a highly concentrated peroxide-based gel and blue accelerator light apply eye-catching radiance to smiles. Most customers opt to start off with two treatments and return at a later time for the remaining sessions.