A further step in gorgeous colour and brightness, the Dualsenses Color Extra Rich range uses innovative Luminescine technology to convert UV light into visible light, this in turn increases the amount of light your hair reflects creating bolder and brighter colour. Furthermore, the Brilliance shampoo uses Fade Stop Formula to reduce colour fading. For Thick to Coarse hair. To use: Apply to wet hair, work into a lather and rinse thoroughly.