Amika Zebra NRG Professional Tourmaline Ionic Dryer With Infrared Heat Technology The new professional NRG drying system harnesses the unique ionic and infrared properties of the tourmaline gemstone. The lightweight NRG dryer uses tourmaline-infused ceramic components to emit maximum negative ionic and far infrared energy, which eliminate frizz, static and drying time while infusing moisture into the hair shaft. The NRG drying system directs a concentrated amount of negative ions and far infrared heat onto large sections of hair for incredibly fast, even drying.