Discover “ Première ”, the revolutionary range from Kérastase , designed to radically transform the health of your hair . This unique collection is the first and only one from Kérastase to offer complete hair repair, both on the surface and in depth. Thanks to its innovative technology , "Première" effectively combats the damage caused by calcium overdose, a common problem caused by hard water, and rebuilds the internal bridges of the hair fiber. The jewels of this range are the Ultra-Repairing Decalcifying Concentrate and the Repairing Decalcifying Bath . They work together to remove excess calcium and repair hair from the inside out. With their high content of repairing acids, these products restore 99% of the hair's original strength and guarantee unrivaled softness and shine.