Moore recommends using your blow dryer on a lower heat and speed setting at first to ensure the hair doesn't overheat. "Even if the hair dryer temperature feels warm — it will probably be around 70 degrees — the temperature of the hair won't go over about 30 degrees until it dries," he reveals. Once your hair is about 90 percent dry, you can then turn up the heat.
According to Top Ten Reviews, the hottest temperature a blow dryer can actually get hovers around 197 degrees. Obviously, you should try to avoid drying your hair at such a high setting, as this will definitely cause some damage. But using Moore's method, you won't come anywhere near that high of a temp.
If you're looking to lock in your style, Moore recommends blasting your hair with the cool setting rather than cranking up the heat. "It makes a massive difference, ensuring the hair's internal bonds are remade and sealing the style in place," he notes.