They are less drying than older alloy or aluminium stylers and radiate heat through ionic infra red plates rather than conducting heat directly onto the hair. if the damage is done to the cuticle, it is irreversible. You will not be able to do anything after that. So, it is always better to take precautions when you use styling products or go through treating your hair in a different way. Do not use the iron when your hair is wet. Before you use the hair straightening iron, make sure you test the heat so that you get assured that it is perfect for your hair.