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 How do I claim on my warranty? Which ghd hair products contain heat protection? Are ghd hair products tested on animals? Which hairdryer can I use the air diffuser with? ghd max and ghd mini styler