This Premiere Concentré Décalcifiant Ultra-reparateur by Kerastase 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.

How To Use

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


Caution and Warning

In case of contact with eyes, rinse them immediately and thoroughly. If irritation occurs reduce the frequency of use.