How long does each treatment last? Is there a money back guarantee? Is postage included? Thanks, Peggy Dorsk
peggy d. asked on Oct 13, 2013
The treatment removes stains from your teeth so technically it lasts forever. Heavy exposure to coffee, smoking, red wine, and some medicines will gradually re-stain teeth over time. Shipping is included. You can read the Groupon Promise here.
Kelsey W. from Groupon replied on Oct 15, 2013