What is the visual comparison of weight called, used to offset or equalize proportion in hair design?

The concept referred to in the question is known as balance in hair design. Balance is a critical principle in visual arts and design that involves creating a sense of stability and proportion in the overall look. In hair design, achieving balance means that the weight and volume of the hair are distributed evenly, providing an aesthetically pleasing appearance.

When a hairstyle is balanced, it helps to offset or equalize proportions, which can enhance the overall look of the hair and face shape. This can be achieved through various techniques, such as layering or adjusting the length and volume of different sections of hair. A balanced hairstyle allows the viewer's eye to flow naturally across the design without any elements feeling overly heavy or lopsided.

In contrast, harmony refers to the pleasing arrangement of different elements, and symmetry entails mirroring elements on either side of an axis, which may not always contribute to the overall balance of the hairstyle. Contrast highlights differences and adds interest through juxtaposition, but it is not specifically about the weight comparison necessary for balance. Thus, balance is the most appropriate term to describe the visual comparison of weight in hair design.