Kérastase Concentré Décalcifiant Ultra-Réparateur Damaged hair

The Ultra-Repairing Descaling Concentrate from the range Premiere Deeply repairs all types of damaged hair.

The calcium in hard water can cause further damage to hair that is already damaged or sensitized. Because it is more porous, damaged hair absorbs three times as much calcium as healthy hair, leading to a cycle of ongoing damage.

The unprecedented 8% concentration of pure repairing acids (glycine and citric acid) in this professional treatment works in two ways: it removes the excess calcium from the hair that causes breakage and repairs it from the inside out by restoring the keratin chains*. Hair is stronger, healthier, shinier, and more bouncy. Repairs 96% of hair damage in just one use**, and 92% of women say their hair is permanently repaired.***

Let it sit for Ultra-Repairing Descaling Concentrate Leave on for 5 minutes, then apply the Repairing Decalcifying Treatment on top without rinsing for enhanced decalcifying and repairing action. Follow with the Repairing Filler Mask or the Repairing Fluidity Cream for added softness and surface repair. Finish with the Fundamental Filler Serum and/or the Repairing Gloss Oil for heat protection and intense shine.

This product was recognized at the 2024–2025 Victoires de la Beauté awards by a jury of consumers.

*Instrumental test, after 6 applications of the Ultra-Repairing Descaling Concentrate, the Decalcifying Repair Bath, and the Fluidity Melt or First Repair Filler Mask **Instrumental test, following use of the ultra-repairing decalcifying concentrate, the decalcifying repair bath, and the melt or first repair mask
***Consumer survey of 268 people, after two weeks of using the Ultra-Repairing Descaling Concentrate, the Decalcifying Repair Bath, and the First Repair Filler Mask

Benefit: 
Citric Acid: An active ingredient that works from the surface to the core of the hair to remove excess calcium, which causes breakage

Results:
96% of hair damage is repaired after just one use*. Hair regains its suppleness and bounce. It is shiny and soft to the touch.
*Instrumental test, following use of the ultra-repairing decalcifying concentrate, the decalcifying repair bath, and the softening treatment or first-step mask