LUMIBRITE Take-Home Whitening Kit is proven to whiten smiles in 1-2 weeks. Other systems require 30 minutes a day, while LUMIBRITE Take-Home is proven to whiten smiles up to 9 shades with only 3 minutes of wear a day for 2 weeks — that's a total treatment time of only 42 minutes! http://www.penetang.com/denturesbydenturists/?listing.action=contact