Première Intensive Repairing ConcentrateRemove calcium buildup with our pre wash treatment for damaged hair. Krastase's revolutionary Premire Intensive Repairing Concentrate is the first of its kind, specially formulated to remove excess calcium and effectively repair damaged hair. Delicate hair types such as over processed or bleached hair are more prone to calcium absorption, leading to further damage. This pre wash glycine hair treatment utilises a potent concentration of 8% pure acids,