What type of styling tool is best for creating curls?

The curling iron is specifically designed for creating curls in the hair, making it the most suitable tool for this purpose. Its heated barrel allows for controlled curling, providing varying sizes of curls based on the diameter of the barrel used. The heat from the curling iron not only shapes the hair into curls but also helps to set them in place, allowing for long-lasting results.

In contrast, a flat iron is primarily intended for straightening hair and may create waves with specific techniques but is not inherently designed for curling. A blow dryer is used for drying and styling hair but requires additional tools like a round brush to create curls effectively. While a round brush can help add volume and create a soft wave when used with a blow dryer, it does not create defined curls like a curling iron.