A glowing smile charms irritable librarians, stern highway-patrol officers, and judges with highfalutin ideas about driving through the library. Flaunt your beaming beauty with today's Groupon: for $49, you get an at-home teeth-whitening kit from Magic Smile (a $299 value). The kit can be shipped to the continental United States as well as Canada, Alaska, and Hawaii with shipping cost included. The whitening kit includes:

• One mouth opener
• Three levels of whitening gel
• Petroleum jelly
• Bib
• Instructional DVD

Magic Smile spiffs less-than-lustrous teeth with at-home whitening kits adapted from European methods of brightening biters sensitively. The Magic Smile Kit - Pro arrives with all supplies needed to snowify smiles: one mouth opener; low-, medium-, and high-strength whitening gel; petroleum jelly; one bib; and an instructional DVD. Once a week for three to four consecutive weeks, palate owners pop-in the mouth opener to reveal all teeth and prevent lips from giving in to their ongoing temptation to neigh. Pouts and gums then get slathered in petroleum jelly to protect them from any inaccurately brushed whitening gel. Clients will start with low-level bleach, priming fangs for optional, graduated applications of medium or high whitening. After 15 minutes of lazing atop jaw hedges, a warm-water rinse swishes away the gel and completes the personalized procedure. Each kit contains enough bleach for 10 to 15 applications, the same number of applications it takes most U.S. presidents to get a home-construction permit.