Ground-breaking pre-shampoo technology. The spray acts like a magnet that filters minerals and metals contained in water that may lead to discolouration of blonde and fair hair. It removes colour-fading residues that cause brittleness and may hinder the results of the colour treatment. Features: unique spray acts like a magnet to remove minerals and metals from the hair in less than 3 minutes - no heat, no cap, no messy mixing innovative combination of 2 molecule filters and 2 polymeric filters that gently, quickly and safely remove minerals responsible for colour fading. ideal for all hair colours and hair types for visible brighter hair and highlights