Which type of flat iron edges are designed to create smooth, straight styles on very curly hair?

The type of flat iron edges designed to create smooth, straight styles on very curly hair is the straight edge. This design allows the flat iron to glide smoothly through the hair without snagging or pulling, which is essential when working with very curly textures that can be more prone to damage. A straight edge provides consistent contact with the hair, ensuring even heat distribution and effective straightening, making it ideal for achieving sleek and polished looks.

Other flat iron shapes, such as rounded or beveled edges, may be more suitable for creating waves or curls rather than achieving a perfectly straight finish. In contrast, a straight edge is specifically intended to facilitate the process of taming tight curls and waves, providing a more efficient styling experience.