L'Oréal Metal Detox Shampoo is a professional purifying treatment formulated to detoxify hair by eliminating metal particles (such as copper, iron, and nickel) that accumulate inside the hair fiber from water exposure, pollution, and repeated washing. Using patented Glycamine technology, it neutralizes metal within the cortex rather than simply rinsing it off the surface, addressing the hidden cause of damage, breakage, and unpredictable color results. Clinical testing shows that when used as part of the Metal Detox system, it reduces hair breakage by up to 87% and significantly optimizes color results by eliminating the metal particles that cause brassiness, hot roots, and rapid fading. It is an essential preparation step recommended for use 2–3 weeks before color, bleach, or lightening services. Suitable for all hair types, it is ideal for those in hard water areas, regular swimmers, or anyone whose hair shows unexplained damage or discoloration. Use as part of the complete Metal Detox system with the matching conditioner or mask.