The best answer is not straight because of different brands in the market with their different characteristics
. Some heating is made of metal, some of them with a ceramic plate elements. Mullions have a hair device embedded in the ceramic plate of tourmaline particles by generating ions, important to help those in hair. There are cheap hair straighteners available that have metal plates that work as mentioned above. Of course, not equal distribution of heat, the result would be incompatible with the trademark. This is why it is better to buy flat irons of ceramic plates, made by famous brands as ghd Straightener is easier with equal distribution of heat and control. This process is completed within 10 minutes from start to your final touches to your straight hair. ghd Straighteners are all safe if used properly. Moreover they don't make any damage on your hair, unless used everyday.