Which tool is essential for creating a layered haircut?

Creating a layered haircut primarily requires shears because they are specifically designed for cutting hair in a variety of styles, including layers. Shears allow for precision and control, which is crucial when cutting hair in layers to achieve the desired shape and texture. By using shears, a stylist can cut different lengths of hair accurately, enabling a smooth transition between the layers and a natural-looking result.

While other tools like razors can also be used to create texture and softness in a haircut, they are not as fundamental for the initial establishment of layers. Razors often provide a more textured look rather than the structured layering itself. Clippers typically serve different purposes, such as removing bulk or cutting hair to a uniform length, and are more commonly used in shorter styles. Combs are essential for sectioning and detangling hair but do not actually cut. Thus, shears are the most appropriate tool for achieving layered hairstyles effectively.