Ridge curls are pin curls placed immediately behind or below a ridge to form what effect?

Ridge curls are specifically designed to create a wave effect in the hair. When these pin curls are placed immediately behind or below a ridge, they follow the contour of the ridge, allowing the hair to form a distinct wavy pattern. This type of curl adds volume and movement to the hairstyle, enhancing its overall dimension. The placement of the curls is critical because it defines the wave's shape and flow.

In contrast, while space, ribbon, and curl might refer to aspects of styling or texture, they do not precisely describe the specific result achieved with ridge curls. Ribbon may refer to a certain style or finishing technique, while space typically addresses the volume or gaps between curls. The term "curl" itself is somewhat general and does not encapsulate the specific purpose or result of ridge curls, which is the creation of waves. Therefore, wave stands out as the clear answer regarding the unique effect created by ridge curls.