The ClearerSmile V34 Colour Corrector utilizes color-correcting technology. Simply apply the v34 Colour Corrector to your toothbrush like regular toothpaste, and brush! Oxidizing tooth stains with PAP+ increases the lightness and reduces the saturation of yellow stains, whereas V34 balances the warm and cool tones (hue) in your teeth to reveal a more vibrant shade of white.