Teeth can turn yellow with age, brown with coffee, and green with envy of a neighbor's new picket fence. Keep teeth in orderly rows with today’s Groupon: for $149, you get a Colgate chairside teeth-whitening treatment at DC Dental Spa (a $595 value).
DC Dental Spa's dentists and technicians restore teeth's snowy-white pelts with Colgate chairside teeth-whitening treatments that take just over an hour. Layers of pH-activated, 36% hydrogen-peroxide gel wash away stains, working quickly without relying on a UV lamp or the unsteady beams of a whitening flashlight. Technicians slather on gel in three 15-minute sessions, using gingival barriers to prevent splashing it on gums, then using suction and rinsing to remove residue. Afterward, teeth prove notably whiter when posing for family photos or growling at postmen the family dog has befriended.