Take out your BlanXometer inside and measure the whiteness of your teeth O3X is the new & exclusive BlanX formula that delivers exceptional whitening results. O3X is the new BlanX formula with Active Molecular Oxygen O3X for professional whitening results. O3X releases oxygen power which removes stains for an intense white smile. These extra fine strips are flexible and transparent for perfect contact with the teeth. The shades of white which can be achieved refer to Vita Classical A1-D4, a well established scale used to determine the colour of teeth by dentists. The O3X formula is scientifically tested for whitening with professional results, visible in just 5 days, gentle on the gums and non-abrasive on tooth enamel, safe on implants, fillings, etc. Active Molecular Oxygen - O3X unleashes oxygen power and removes stain for a superior whitening effect Arctic Lichens - Natural Active ingredient fights plaque and naturally whitens teeth