Hismile V34 Colour Corrector Serum - 1 fl oz (30 ml)Product Benefits: Colour Correcting Technology Based on the colour wheel, where purple and yellow are complementary opposites. Applying purple to the teeth neutralizes yellow undertones, creating a visibly brighter shade of white. Instant Brightness Boost Conceals stains and enhances whiteness after whitening treatments or before big events. Safe & Non Invasive Not a chemical whitening treatment, making it safe for use on dental work. Daily or