I always make sure that, if I'm buying a new curling iron, I get one with an auto-off feature. Even with it, I always unplug it when I'm finished. But, invariably, I will be in the car going somewhere and have this "OH MY GOODNESS. DID I UNPLUG IT? I think I did. Did I? I'm not sure. Ok, I'm freaking out now" feeling. At least I know that it does turn itself off after an hour by itself.