does the crest white strips classic last at least one year?
yes
Model Availability Introduced Length of use Last of whiteness
Crest Whitestrips Classic\npreviously Crest Whitestrips Discontinued May 2001 14 days 12 months
Crest Whitestrips Professional Discontinued 2001 10 days 12 months
Crest Whitestrips Supreme Dentist and online September 2003 21 days 18 months
Crest Whitestrips Premium Discontinued January 2004 7 days 12 months
Crest Whitestrips Pro\npreviously Crest Whitestrips Premium Plus Discontinued April 2005 10 days 18 months
Crest Whitestrips Renewal Discontinued January 2006 10 days 18 months
Crest Whitestrips Daily Multicare Discontinued March 2007 Daily White after using system
Crest Whitestrips Advanced Seal Discontinued February 2009 14 days 18 months
Crest Whitestrips 3D Vivid Instore and online 2009 10 days 12 months
Crest Whitestrips 3D Advanced Vivid Instore and online March 2010 14 days 12 months
Crest Whitestrips 3D Professional Effects Instore and online March 2010 20 days 12 months
Crest 3D White 2 Hour Express Instore and online 2010 2 hours 3 months
Crest 3D Intensive Professional Effects Instore and online 2011 7 days 12 months
csv/204-csv/625.tsv