Which curl type is primarily used for achieving softer waves?

Pin curls are traditionally used to create softer waves due to their method of wrapping the hair in small, circular motions, which allows for gentle, wave-like textures. When you form a pin curl, the hair is curled around itself and secured close to the scalp, which produces a wave that's more fluid and relaxed compared to other curling methods. This technique is excellent for achieving a vintage or soft wave look, as it promotes less tension and creates a more natural movement in the hair.

The other types of curls, such as spiral curls, barrel curls, and cascade curls, typically yield a more defined or voluminous curl, which can be less suited for creating the soft wave effect sought after. Spiral curls create more of a corkscrew effect, barrel curls provide larger, bouncy curls, and cascade curls usually result in stacked layers that add height rather than a gentle wave.