Stained teeth can reveal a reliance on coffee, an affection for red wine, or a habit of eating house plants. Keep your indulgences secret with today's Groupon: for $99, you get an in-office Zoom! teeth-whitening treatment from Dr. Steve Ballis at Lake Forest Dental, Ltd. in Lake Forest (a $400 value).

At Lake Forest Dental, Ltd., experienced cosmetic dentist Dr. Steve Ballis turns teeth 7–10 shades brighter with Zoom! teeth-whitening treatments. Patients begin the roughly 90-minute session by reclining in leather chairs as their lips and gums receive a protective cover, leaving only the teeth and their sordid secrets exposed. Zoom! whitening gel then smothers mouth bones and works specifically with the Zoom! light to penetrate enamel and remove stains and discoloration. During the hour-long bleaching, clients may watch TV, attempt to interpret the Voynich manuscript, or listen to music.