Crest 3D Whitestrips Professional Effects & Supreme Bright Whitening Kit

20 - Treatments (40 strips - 1 upper and 1 lower) Professional Effects 11 - Treatments (22 strips - 1 upper and 1 lower) Supreme Bright Boost Can whiten teeth up to 35 levels Offers professional-level whitening Safe for enamel and effectiveYou may also like Crest 3D Whitestrips, Radiant Express with LED Accelerator Light, Teeth Whitening Strip Kit, 40 Strips (20 Count Pack).