A "hair cur" (noun) is a device designed to shape and style hair, creating curls or waves. It typically consists of a heated barrel wrapped in a protective material.
Hair curs offer numerous benefits: they add volume, texture, and definition to hair; can create a variety of looks, from loose waves to tight curls; and can be used on all hair types. Notably, the electric hair cur, invented in the early 20th century, revolutionized hair styling.