This professional pre-shampoo treatment is engineered to neutralize metal particles that accumulate on the hair fiber during washing. By specifically targeting mineral deposits, this formulation helps prevent color fade and loss of shine, preparing the hair for subsequent cleansing and conditioning steps. It is an essential preparatory step for maximizing the efficacy of your complete Serie Expert routine, leading to healthier-looking and more vibrant hair. Use this product before shampooing to restore your hair's integrity and vibrancy.