Spotlight Whitening?s Mens Teeth White Strips are formulated the exact same way as the original Teeth White Strips but the shape and size have been specifically designed to cater for the anatomical differences between men and women in order to deliver the maximum impact. With the same best-selling formula and super-seal strip technology, the Mens Teeth White Strips offer a brighter smile in 14 days. Spotlight teeth whitening strips, are the only European whitening strips to contain hydrogen peroxide (less than 0.01%). Hydrogen peroxide is the most effective active agent to whiten teeth. The colour of teeth is influenced by a combination of both the internal colour of our teeth and external staining that attaches to our teeth such as tea, coffee and red wine. Hydrogen peroxide whitens teeth in two ways 1. by breaking down these complex stains 2. by penetrating the top layer of the enamel which brightens the colour of this top layer of enamel.