If your hair dryer is tripping the breaker, there are a few things you can try to fix the issue. First, check to see if the cord is damaged in any way. If it is, you'll need to replace it. Next, make sure that the outlet you're using is not overloaded with other devices. If it is, plug some of them into another outlet. Finally, check the settings on your hair dryer. Some models have a setting that automatically shuts off the power if it gets too hot. Make sure this setting isn't turned on.