Crest 3D White whitening system

Crest 3d white's new, unique blue light system uses the same type of light technology dentists use. The blue light weakens stains so that the whitening ingredient can work more effectively. The result is dramatically better whitening compared to strips al1 that lasts up to 36 months. Crest 3D White Whitestrips with Light, Teeth Whitening Strips Kit, 10 Treatments, 20 Individual Strips (Packaging May Vary)