The goldwell dualsenses silver shampoo offers the next generation of colour luminosity, working to neutralise yellow tones and brassiness with an instant cooling effect. ideal for grey hair and ash blondes, the gentle treatment sweeps away dirt and oil with a colour-safe fadestopformula to minimise dullness and fading. the advanced luminescine technology actively transforms non-visible uv light into visible light, resulting in superb colour vitality and mirror-like shine to enhance tone and depth.