For normal to medium thick hair, the ideal temperature is somewhere between 300 to 350 Fahrenheit. If the length is below the shoulder, experts recommend the heat setting 360 to 380 degrees Fahrenheit. If you can, choose a model that has a digital panel. This allows you to see exactly how much heat the hair straightener is pressing onto your hair at any given time.
I read lots of different reviews about these straighteners and a lot said these aren't genuine. They are definitely ghds just professional ones which means they are lighter. They are exactly the same ones at my hair dressers. I'm happy.