Hismile's V34 Colour Corrector works to brighten teeth by utilising colour correcting technology. By counter-balancing the different hues in your teeth, V34 conceals stains and improves brightness. Purple is directly opposite yellow on the colour wheel and is, therefore, its complementary colour, so with this Purple Toothpaste like product, a water-soluble purple dye is applied to your teeth to cancel out any yellow undertones. Use Hismile V34 after a whitening treatment, daily, or before an event for a brightening boost. V34 Colour Corrector is best used as a post whitening treatment, however it can be used on its own daily or before an event, to eliminate unwanted yellow undertones on your teeth.