[SCIENTIFIC DISCOVERY] Wash after wash, metal particles, such as copper, can penetrate your hair fibers. Metal particles can create a risk of breakage & color shift.[INNOVATIVE TECHNOLOGY] Concentrated with glicofiller, this pre-shampoo treatment refills millions of hair micro-breaks in 1 use. Damaged hair is reinforced and protected from new particles deposit to reduce breakage and provide 72h of hydration.*[HIGH PROTECTION] 96% less hair breakage.*[INTENSE MOISTURE & DETANGLING] 72h hydration & smoothness.* Instant & efficient fiber detangling. Intensely moisturized and strengthened, hair is instantly easier to detangle.[ANTI-POROSITY] Technology prevents porosity** when hair is the most vulnerable to water: before the shampoo.[PROFESSIONAL FORMULA] Its lightweight texture refills micro-breaks in the fiber without weighing hair down.[RECOMMENDED FOR ALL HAIR TYPES] Daily usage for all hair types, even the most porous.[ASK METAL DX IN-SALON PROTOCOL]: At your next salon visit, ask for the Metal DX protocol concentrated in Glicoamine to stop hair breakage & color shift: for 100% true-to-tone long lasting color*** and -99% hair breakage****.*Instrumental tests.**Instrumental test after 10 uses of Metal DX pre-shampoo treatment + shampoo + mask +oil.***Instrumental test on Metal DX shampoo + mask.****Instrumental test on Metal DX pre-shampoo + shampoo + maskAnvändning:Separate wet hair into 2 sections. Apply 2-4 pumps per section, depending on the length of the hair. Work through the length and ends for 1-2 minutes. Do not rinse. In a layering technique, apply Metal DX shampoo directly over the top, then rinse and follow with the Metal DX mask. In case of contact with eyes, rinse them immediately and thoroughly.THINK SUSTAINABLY: Integrate this pre-treatment into your sustainable habits and turn off the tap while applying the pre-treatment to reduce your water consumption. L'Oréal Professionnel Metal DX Pre-Shampoo 250 ml