A curling iron is a popular hair styling tool used to create curls and waves in hair. It consists of a heated metal barrel that comes in various sizes, allowing users to achieve different curl styles. The device is typically powered by electricity and features a handle for easy maneuvering. Many curling irons also have adjustable temperature settings to accommodate different hair types. To use a curling iron, hair is wrapped around the heated barrel, which helps to shape the strands into curls. Safety features, such as automatic shut-off and heat-resistant tips, are often included to prevent burns and accidents. Proper use can enhance hairstyles for various occasions, making curling irons a staple in many people's beauty routines.