7AA Calura Med Int Ash Blonde 7-11

7AA Calura Med Int Ash Blonde. The CALURA system is formulated with an innovative exothermic technology that was designed to maximize dye penetration and minimize hair damage. Each shade was formulated to generate a specific increase in temperature to achieve desired results. As a bonus, this heat allows a thorough penetration of the certified organic essences and keratin. The result is an incomparable radiant shine!