Which hairdryer can I use the air diffuser with? 23 September 2019 07:53 Updated The diffuser can only be used with the ghd air® hairdryer. Unfortunately, this will not work with the ghd flight®. Related articles What is the difference between the ghd hair dryers? ghd air® hair dryer What is the wattage of the ghd hairdryers? How do I curl my hair with my ghd styler?