Calcium in water can further damage already delicate over-processed or bleached hair. Being more porous, damaged hair can absorb up to three times more calcium than natural hair. This haircare trio are formulated with a concentration of pure citric acid and glycine to decalcify hair from calcium overdose, visibly repair, and reduce its stiff, dull appearance. Kérastase Première Decalcifying System Reparative Shampoo 250ml: Restores hair's original strength* while providing up to 73% shinier hair** by freeing hair from calcium build-up that leads to breakage. Kérastase Première Decalcifying Repairing Shampoo is a decalcifying, repairing shampoo for all types of over-processed or damaged hair. This professional-level shampoo gently cleanses the scalp and hair while removing excess calcium***, which further weakens treated hair. Use the full routine to help repair hair from the inside out, reduce breakage and restore a healthy feel to the hair. A white creamy shampoo that transforms into