Which principle is defined as the distribution of light and dark colors in hair design?

The principle described as the distribution of light and dark colors in hair design is contrast. This concept plays an essential role in hairstyling, as it helps create visual interest and dimension within a hairstyle. By strategically using varying shades, stylists can highlight certain features or create depth, making the overall look more dynamic and engaging.

Contrast enables the stylist to guide the viewer's eye and emphasizes the shape and structure of the hairstyle. For example, a stylist can use lighter colors around the face to brighten the overall appearance or add darker tones to create an illusion of thickness and texture. This fundamental principle is vital in achieving a balanced and aesthetically pleasing design.

In contrast, harmony refers to the overall unity of colors in a hairstyle. Repetition involves using similar elements repeatedly to create a cohesive look. Alignment relates to the arrangement and positioning of hair strands and style elements. While all these principles are crucial for hairstyling, it is the contrast that specifically addresses the interplay of light and dark colors.