What heat does the heat protection system protect up to? 28 August 2020 11:11 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? Which hair dryer can I use the ghd professional hair dryer diffuser with? ghd max and ghd mini straightener There is a hole in my paddle brush, what is this for?