Another name for the form or mass of a hairstyle is:

The term that refers to the form or mass of a hairstyle is "volume." In hairstyling, volume describes how much space the hair occupies and contributes significantly to the overall look of a hairstyle. It involves the amount of lift and fullness that can be created, whether through styling techniques, products, or the inherent characteristics of the hair itself. Volume can dramatically alter the perception of a hairstyle, enhancing its shape and texture.

Understanding volume is essential for stylists as it helps them manipulate the hair to achieve desired looks, making it a foundational concept in haircutting and hair styling. Factors such as hair density, the cut of the hair, and the use of certain styling tools and products all interact to create the volume effect, influencing the hairstyle's form and mass.