Krastase Premire Huile Gloss Rparatrice 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 bleached hair, 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 hair strength, and radically neutralizes the persistent dullness of damaged hair. Hair is left stronger, and 4 times shinier. *