Goldwell Dualsenses Color Fade Stop Shampoo Color Treated Hair 250ml/250ml With the new Dualsenses Fade Stop Shampoos GOLDWELL has made significant technological progress. UNSURPASSED COLOR RETENTION WITH DOUBLE EFFECT. Dualsenses double effect. Hair color is most brilliant right after the color service. Shampooing with any shampoo (sulfate or sulfate-free) causes the color to fade as it weakens the anchoring of the color molecules. The innovative FadeStopFormula of the shampoo actively strengthens the anchoring of the color molecules. At the same time, the new cream foam gently cleanses the hair. That is the Dualsenses double effect.