Medium-sized hair curler This Nova hair curler will give you medium-sized curls. You can use it to give yourself soft, barely-there curls, or bold, rock star-inspired ones. Safe to use This hair trimmer has been designed to not dry out your hair or cause any damage. Easy-to-use A switch of a button is all it takes to get this appliance going. It also comes with a special technology that prevents it from overheating and burning your scalp/hair.