Like choosing paint swatches with an impatient spouse, teeth bleaching replaces pale pistachio, bavarian cream, and summer peach with a simple shade of white. Simplify your tones with this Groupon.

$29 for an At-Home Teeth-Whitening Kit ($158 Value)

Clients sink teeth into trays twice a day for 30–60 minutes, depending on tooth tolerance. While the peroxide gel does its whitening work, clients are free to watch TV, read a book, or complete a triathlon. The kit supplies enough gel for seven–nine sessions.