Which type of curls can be created using a perm rod?

Perm rods are specifically designed to create spiral curls. The shape and thickness of the rod, alongside the way the hair is wrapped around it, facilitate the formation of these defined, corkscrew-like curls. The chemical process used during a perm enhances the curl pattern, making them bouncy and long-lasting. Spiral curls created with perm rods offer a structured look that can vary in tightness depending on the size of the rods used.

Other types of curls, while they may involve similar wrapping techniques or styling tools, do not utilize perm rods specifically. For example, wavy curls and loose curls would typically be created with different methods such as using curling irons or hair rollers that produce a gentler wave rather than the tight spirals characteristic of perm rods. Beachy waves also rely more on loose curls created through techniques that emulate natural waves, often involving less tension and different styling tools. Thus, while those other curl styles are popular, they do not involve the same process or produce the same results as spiral curls achieved with perm rods.