Tooth whitening can help restore teeth to their original white after years of drinking coffee and confusing spray-paint with Binaca. Smile brighter with this Groupon.

$94 for In-Office Zoom! Teeth Whitening with Consultation ($516 Value)

The in-office professional Zoom! treatment whitens teeth by up to eight shades with a light-activated gel. Friendly assistants whisk patients from an elegantly appointed waiting room to cushy exam chairs where a thorough consultation explains the procedure. Once fully informed, patients slip into a gum shield and specially shaped retractor that draws back their lips to leave only the teeth exposed. A staff member then paints each tooth with a concentrated hydrogen peroxide gel that activates its bleaching powers once spotlit by a specially designed Zoom! light. For the next hour, patients can kick back and calculate how many pairs of sunglasses they'll need to give family and friends once the three 15-minute bleaching sessions have brightened their choppers by 6–10 shades. Results yield sunshiny smiles for up to a few years as long as mouths steer clear of known stain offenders such as coffee and tobacco; any mild sensitivity experienced after treatment generally fades within a day.