Repairing Spray for Colored Hair L'Oreal Professionnel Metal Detox Pre-Treatment Spray

Metal that can accumulate inside the hair fiber may pose a risk of breakage and can negatively affect coloring outcomes during dyeing, calibration, and lightening processes. An excess of copper within the hair fiber can interfere with the oxidant. This means the oxidant might not be able to perform its job properly. This patented technology, enriched with glycine, helps neutralize excess copper, ensuring it won't affect your color. As the formula penetrates the fiber, the result is even, longer-lasting, and leaves hair brilliantly shiny.