What technique involves adding delicate shadings to create dimension in hair color?

The technique involving adding delicate shadings to create dimension in hair color is known as nuances. This method specifically focuses on incorporating subtle variations in color that enhance the overall visual depth of the hair, allowing for a more natural and multi-dimensional appearance. Nuance techniques typically blend lighter and darker tones seamlessly, resulting in a sophisticated look that captures light in a way that flat colors cannot.

While techniques like streaking and shading do involve manipulating hair color, they are generally more focused on specific applications or effects. Streaking often refers to a more pronounced and defined section of color, while shading can imply a broader range of techniques to blend colors. Shadowing usually refers to darker tones being applied to certain areas to create depth, but it does not specifically focus on the delicate blending that nuances achieve. Thus, nuances stands out as the most accurate term for the delicate application that enhances dimension in hair color.