A hair straightener that curls, also known as a 2-in-1 hair tool, is a versatile styling device that combines the functions of both a flat iron and a curling iron. It typically consists of flat, heated plates that can be used to straighten hair, as well as a rounded barrel that can be used to create curls or waves.
Hair straighteners that curl offer a number of benefits, including the ability to style hair quickly and efficiently, and the versatility to create a variety of looks. They are also relatively easy to use, making them a good option for people who are new to styling their own hair. One of the key historical developments in the evolution of hair straighteners that curl was the introduction of ceramic plates, which provide even heat distribution and help to prevent hair damage.