What heat does the heat protection system protect up to? 16 September 2019 05:58 Updated It protects up to 220ºC, however, we do not recommend styling hair over 185ºC. Related articles Which ghd hair products contain heat protection? Are ghd hair products tested on animals? What is the warranty on my product? How do I clean my ghd glide? How can I get in touch with your customer care team?