BlanX O3X Supreme White Trays it’s 5-days whitening treatment. When applying, the O3X formula releases active oxygen that can oxidize discolorations on the teeth and make them whiter up to 4 shades in just 5 days. Exclusive to BlanX, O3X is a new advanced formula for professional whitening results. The unique combination of oxygen power and Arctic Lichens actively removes stains for an intense white smile. The prefilled trays are easy to use, and the thin, flexible design ensures they are suitable and comfortable for use on all sizes of teeth. The structure of the tray ensures the whitening effect on both the front and back of the teeth. O3X is tested and proven to give visibly whiter results in just a few days. The innovative peroxide-free formula is non-abrasive and delicate on gums and enamel. • Fast, professional results • Safe and effective • Easy to use