What heat does the heat protection system protect up to? 23 September 2019 07:53 Updated It protects up to 220ºC, however we do not recommend styling hair over 185ºC. Related articles Are ghd hair products tested on animals? Which ghd hair products contain heat protection? What is the warranty on my product? How do I clean my ghd glide? How can I get in touch with your customer service team?