Like the moon, a set of perfectly white teeth is bright, alluring, and difficult to obtain without 238,857 miles of dental floss. Lasso a luminous glow with this Groupon. The Deal $99 for a Zoom! teeth-whitening treatment ($400 value) Give the gift of teeth as white as snow or prepare for upcoming holiday parties and the photos that document them all with a Zoom! whitening treatment. Teeth are coated in a light-activated, hydrogen-peroxide-based gel that breaks up stains under the blue glow of the Zoom! lamp. Smile brightness intensifies an average of eight shades after one treatment, and teeth stay luminous as long as patrons use proper care and have the numbers of at least five dental hygienists on speed dial.