Kérastase Première Intensive Shine Repairing Oil is a leave-in concentrated oil that repairs and restores shine for all damaged hair types. While calcium supports hair health, excess calcium can damage bleached or over-processed hair, causing dullness and breakage. This luxurious oil has a double action: its high concentration of repairing agents seals split ends, strengthens hair, and neutralizes dullness. Hair is left stronger and up to 4x shinier.** For best results, use with the Première layering technique: 1️⃣ Start with the Decalcifying Pre-Shampoo Treatment 2️⃣ Layer on Decalcifying Repairing Shampoo (without rinsing) 3️⃣ Follow with conditioner or mask 4️⃣ Apply Repairing Anti-Frizz Filler Serum for extra protection 5️⃣ Finish with Intensive Shine Repairing Oil as the final step 🌿 Bottle made of 20% recycled glass 💪 Recreates up to 99% of hair’s original strength ✨ Up to 4x shinier hair