Exclusive sulfate and paraben-free shampoo for use before technical services with dual cleansing and chelating action. Removes styling residues and build up and neutralizes deposits from previous services. Procolorist chelating shampoo guarantees perfectly clean hair and creates the best surface for an even colour result and pigment penetration. Creating the perfect base means that the colour will last longer. Hair is left balanced, hydrated, and soft to the touch.