The Exothermic Perm is the perfect perm for the firmest, longest-lasting curls on normal, tinted, and resistant hair. Curls will be strong and defined and easy to manage. The self-heating formula uses gentle heat to provide maximum comfort and ensures shine and manageability, even on colored hair. It contains argan oil to help moisturize, revive, and nourish dry, damaged hair. The formula is balanced and genthle.