Features:1. Works to brighten teeth by utilizing colour correcting technology. By counter-balancing the different hues in your teeth, it conceals stains and improves brightness.2. Colour correction all starts on the colour wheel, where purple and yellow are complementary colours opposite to each other. Applying purple onto your teeth will neutralise the yellow undertones and cancel them, revealing a perceptively brighter shade of white. Pretty cool right?3. We found the shade of deep purple, that neutralises yellow. A way to clean your teeth. Non-invasive brightening treatment.4. Our Colour Corrector combination of two water-soluble dyes allow for any shade of yellow to be cancelled for the brightest smile, without leaving behind any residue.5. Clean teeth without hurting the gums to giving you a more beautiful and whitener teeth. Notice:Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement.Description:Capacity: 30mlColor/Style: As the picture shownincludes:1 x Teeth Whitener