Pre Shampoo Treatment

L'Oréal Professionnel Serie Expert Metal Detox Pre-Shampoo Treatment is a professional pre-wash treatment that refills up to one million hair micro-breaks in a single use, preventing excess absorption of water containing damaging metal particles . Concentrated with patented Glicofiller/Glicoamine technology, this lightweight gel formula treats hair when it is most vulnerable to damage—before shampooing—by sealing micro-cracks in the hair cortex and stopping metal particles from penetrating the fiber .

Clinical testing shows that this pre-shampoo delivers up to 96% less hair breakage in one use, with hair becoming 25x stronger and less porous when used as part of the complete Metal Detox system . It also provides 72 hours of hydration, smoothness, and softness, instantly detangling hair and leaving it visibly healthier and full-bodied .

The unique layering technique requires no rinsing—simply work the product through wet hair for 1-2 minutes until a light lather appears, then apply Metal Detox Shampoo directly over the top . Suitable for all hair types—color-treated, damaged, bleached, highlighted, natural, fine, and textured—this treatment is especially recommended before chemical services to ensure 100% true-to-tone color results and up to 87% less breakage .

The formula features an addictive fragrance with a unique signature—memorable citrus top notes associated with distinctive musky woods . It is vegan and sulfate-free, making it a clean, professional choice for daily or weekly use .