Flash your smile with 28 or 56 teeth whitening stripsr aims to transform your teeth up to 10 shades lighterr fast express treatment in just 30 minutes for directions of use see full detailsr includes top and bottom strips for an even processr non peroxide formula great for sensitive teethr may see results in as little as two treatmentsr r buying optionsr r 599 pound instead of 895 pound for 28 strips save 34r 999 pound instead of 1790 pound for 56 strips sa