The first treatment before shampooing that removes calcium and fully restores all types of damaged hair.

The concentration of pure acids in this treatment has a dual effect: it decalcifies the hair from this calcium overdose and repairs it from the inside, restoring its strength and returning it to a stiff and matte appearance.

This brilliant hair savior with a transparent gel texture dramatically repairs lingering damage, reconnecting broken keratin bonds to strengthen hair strength and structure. Hair remains stronger, looks healthier and is shinier - as if it has been renewed. Leave Kérastase Concentré Décalcifiant Ultra-Réparateur on without rinsing and layer with Kérastase Première Bain Décalcifiant Réparateur for extra descaling and regenerating effects. As a final step, use Fondant Fluidité Réparateur.