HAIR TYPE: All Hair Types, Damaged Hair / COLLECTION: Première / La Kérastase Première Decalcifying Repairing Pre-Shampoo Treatment is specially formulated for all those who struggle with damaged hair requiring intensive repair . If your hair suffers from stiffness, dullness and persistent breakage, this pre-shampoo treatment is your solution to restore strength, vitality and shine to your locks. Première Decalcifying Repair Pre-Shampoo is a highly concentrated treatment infused with pure acids, offering a dual decalcifying and restorative action. It serves as a powerful precursor to your usual shampoo routine, preparing your hair for deep repair and conditioning . What should be done? This powerful treatment targets the root cause of persistent hair damage: calcium buildup . Hard water can worsen existing damage by depositing calcium, making your hair more porous and more prone to breakage. The Kérastase Première Treatment pre-shampoo eliminates this calcium overdose, both on the surface and deep in the hair fiber, effectively reversing stiffness and dullness. Main ingredients Formulated with an 8% concentration of pure acids , including citric acid and glycine extract, this treatment works to decalcify and repair hair from the inside out. Citric acid neutralizes calcium buildup , restoring shine and suppleness, while glycine extract restores broken internal fiber bridges , strengthening hair structure and reducing breakage. La Kérastase Première Pre-Shampoo Treatment provides unparalleled repair and rejuvenation for damaged hair. With 99% of hair's original strength restored , 93% less breakage , and a remarkable 75% increase in shine , your hair will look and feel healthier than ever. How to use Première Decalcifying Repair Pre-Shampoo? Start by generously applying the treatment to damp lengths before shampooing , massaging the hair to ensure complete coverage. Let the treatment work its magic for 5 minutes without rinsing . Follow up with Decalcifying Repair Shampoo to maximize effectiveness, then continue with Première Conditioner or Masques.