Up to 92% fewer visible split ends*, and up to 4x shinier hair*. Kérastase Première Intensive Shine Repairing Oil is a leave-in concentrated oil that repairs and restores shine for all types of damaged hair including damage by heat tools, colour treatment, bleaching and over-processing. 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 helps seals the appearance of split ends, boosts hair strength, and radically neutralises the persistent dullness of damaged hair. Hair is left stronger, and up to 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 Decalcifying Repairing Pre-Shampoo Treatment