What is a key feature of barrel curls?

A key feature of barrel curls is that they are fastened to a rectangular base. This technique is crucial because the rectangular base allows the hair to be wrapped around the curling iron or roller in a way that creates a defined and structured curl rather than a looser wave. The rectangular base helps in providing more control and a polished finish to the curl.

Barrel curls are typically utilized for creating volume and shape in hairstyles, and the positioning is important for achieving the desired effect. The shape of the base influences how the curl will sit on the head and the longevity of the style. Therefore, when executed correctly, barrel curls can provide significant lift and sophistication to hairstyles.