How do u use Crest White Strips?

Crest Whitestrips Classic should be worn on your upper and lower teeth, twice a day, for 30 minutes. You can wear them while you shower.
Updated on Thursday, February 02 2012 at 11:48AM EST
Source: www.whitestrips.com/...
Collection: crest whitestrips 

Experience more on Qwiki.com