What technique is commonly used in highlighting hair to add dimension?

The technique commonly used in highlighting hair to add dimension is foiling. Foiling involves placing sections of hair in aluminum foil after applying a highlighting product. This method is particularly effective because it isolates the hair strands, allowing for more precise application of color. The foil helps to create a controlled environment that enables the lightener to lift the hair color and develop evenly, providing a sharp contrast between the highlighted sections and the base color. This results in a multidimensional effect that enhances texture and depth, making it a popular choice among hairstylists.

While other techniques such as balayage, ombre, and lowlighting also contribute to hair dimension, they operate differently. Balayage is a freehand painting technique that creates a more natural transition but may not provide the same stark contrast as foiling. Ombre involves a gradient color effect, typically darker at the roots and lighter towards the ends, which adds dimension in a more blended manner. Lowlighting, on the other hand, refers to the technique of adding darker shades to the hair to create depth, but it does not necessarily focus on highlighting the hair. Each of these techniques has its specific uses and effects, but foiling remains a widely recognized choice for generating vivid highlights that enhance dimensionality.