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!NOTE : ALL PRODUCT MANUFACTURES ALWAYS UPDATE THE PACKAGING FROM TIME TO TIME SO IF U GET SOMETHING THAT LOOKS DIFFERENT FROM PICTURE IS JUST MEANS U ARE GETTING THE NEWEST AND UP TO DATE LOOK NOTE: ALL PRODUCTS ON OUR SITE ARE UP TO DATE MANUFACTURES FROM TIME TO TIME CHANGE THERE PACKAGING SO IF U GET SOMETHING THAT DOEST NOT MATCH THE PICTURE IT JUST MEANS THEY CHANGED THE PACKAGING AND WE ONLY SELL UP TO DATE AND BRAND NEW PRODUCTS