Which technique uses two combs instead of fingers to create a three-dimensional form in hairstyling?

The technique that utilizes two combs to create a three-dimensional form in hairstyling is known as a push wave. This method involves the use of two combs to manipulate the hair into waves that have depth and dimension, contrasting with other techniques that may rely on fingers or tools for shaping.

Push waves provide a structured and defined wave pattern, making them distinct in creating volume and texture in a hairstyle. The use of two combs allows for more precision and control, enabling the stylist to create a more polished look. This contrasts with ribboning, which typically involves twisting or bending sections of hair with more fluid movements. Sculpture curls focus on creating curls by setting hair into defined shapes, while shaping is a more general term that refers to the overall layout or form created in hairstyling, often relying on the stylist's hands rather than combs for manipulation.

Overall, push waves stand out as a specialized technique for achieving a unique and artistic three-dimensional appearance in hair designs.