What are the terms and conditions of your promotions? 16 September 2019 05:58 Updated Please see our Terms of Sale (Clause 11) for any information on ghdhair.com promotions. Related articles I am seeing a message that says my code is invalid, what does this mean? Can I use my promotional code with another offer? Can I cancel or amend my order? Do you advise in advance of your promotions? What is the difference between the ghd stylers?