The differences between hair straightener or curling iron heating elements

We know that mostly there are two kinds of heater or heating elements for hair straighteners/curling irons: PTC or MCH. What are the differences? What is the time for temperature warming up using PTC, MCH?

For PTC, the highest temperature for it would be 290 Celsius degree but need 150 seconds to heat up to 230 Celsius degree and that’s the most brand name’s hair straighteners status. We could improve the time to 120 seconds.

For MCH, the highest temperature can reach 800 Celsius degree. So it needs strict control for the PCB, once lost control, the heater will be too hot and cause danger! That’s why 90% of hair straighteners are using PTC. And the time needs 30 seconds to reach 230 Celsius degree.

There’s a new heater from Japan. It can reach 230 Celsius degree in 10-12 seconds. Which applied in big brands like GHD.