Negatively charged ions break up water molecules. Hairdryers that can produce more ions - dry faster.
from the T3 website :
Totally Tourmaline. High Tech for Hair
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T3 Tourmaline is a new line of infrared and ionic hair appliances available through T3 Micro, Inc. and SDL Hair.
T3 Tourmaline Ionic Blow Dryers are the most advanced professional dryers available today. Use of 100% crushed Tourmaline components makes them the most ionic and infrared. They deliver unbelievable results that you truly have to see to believe.
T3 Tourmaline Ceramic Flat Irons take flat irons to the next level by adding Tourmaline negative ion technology. Use of 100% crushed Tourmaline jewels ensures the most negative ions and far infrared heat and the healthiest, sleekest results.