Kerastase Premiere Pre Shampoo Concentre Decalcifiant Ultra-Reparateur is the first pre-shampoo treatment that removes calcium and fully repairs all types of damaged hair. Hard water with calcium can further damage already delicate over-processed or bleached hair. Because it’s more porous, damaged hair absorbs 3 times more calcium than natural hair. This treatment’s concentration of pure acids has a dual action: it decalcifies hair from this calcium overdose, and repairs it from the inside out, restoring hair strength, and reversing its stiff, dull appearance.

With its transparent gel texture, this brilliant hair savior dramatically repairs persistent damage, reconnecting broken keratin links to reinforce hair strength and structure. Hair is left stronger, healthier-looking, and shinier – as if renewed. Leave on Kérastase Concentré Décalcifiant Ultra-Réparateur without rinsing, and layer with Kérastase Première Bain Décalcifiant Réparateur for extra decalcifying and repairing action. Team with Fondant Fluidité Réparateur as a final step.


  • “Decalcifies* and dramatically repairs persistent damage.
  • Reverses stiffness and dullness
  • Reconnects broken links between keratin chains* for an inner structure reinforcement
  • Recreates 99% of hair’s original strength*
  • +97% inner structure reinforcement*
  • 93% less breakage**
  • 75% more shine**

How to use: 

  • STEP 1: Apply generously on wet lengths before shampoo and massage throughout.
  • STEP 2: Leave on for 5 minutes. Don’t rinse.
  • STEP 3: Layer Première Bain directly on top to maximize efficacy.
  • STEP 4: Rinse and follow with Première Fondant Conditioner or Mask.




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