This best-in-class drying technology is the greatest ever offered by Hot Tools� Professional. It is the answer to control frizz and the beginning of shiny, manageable hair. This ionic dryer uses DIRECT ION TECHNOLOGY�, which injects a high volume of ions directly into the air stream, and breaks apart water molecules for faster drying. With this amazing feature, ionic output can be adjusted according to your hair type and humidity conditions to control hair volume and increase shine.