― Katy Perry is the face of ghd, and this is the just-released Ellen Von Unwerth-shot campaign for the brand. Behold - so beautiful, right? ∙ And a 'bonus' shot I picked up from the UK's Daily Mail: ∙ And now, the ghd air hairdryer is the product in the famed ghd line spearheading the 'ghd Hairdryer Trade In'. From the August 27 to October 5, ghd is giving you $50 off the new ghd air. ∙ Here's how it works: trade in an old hairdryer at any participating ghd salon, and upgrade [...].