Kérastase Première Huile Gloss Réparatrice is a leave-in concentrated oil that repairs and restores shine to all types of damaged hair.Calcium, like many minerals, is good for hair health, but too much can lead to a calcium overdose, which further damages over-processed or bleachedhair, making it dull and prone to breakage. This luxurious, enveloping oil has a double action: with its high concentration of repairing and caring agents it seals split ends, boosts hairstrength, and radically neutralizes the persistent dullness of damagedhair. Hair is left stronger, and 4 times shinier. *For even more restructuring care for your damaged or over-processed hair, discover the benefits of the layering technique. Start with the pre-shampoo treatment, Kérastase Première Concentré Décalcifiant Ultra-Réparateur. And without rinsing off the concentré, layer on Kérastase Première Bain Décalcifiant Réparateur for extra decalcifying and repairing action. Finish with a Première conditioner or mask, and style with leave-in Kérastase Huile Gloss Réparateur as a final step. Bottle made of 20% recycled glass.4x shinier hair*