Final answer:
In a uniform-layered haircut, the hair is elevated to 90 degrees and cut at the same length using a horizontal guideline.
Step-by-step explanation:
In a uniform-layered haircut, all hair is elevated to 90 degrees from the scalp and cut at the same length, using a horizontal guideline that is inside the haircut rather than on the perimeter.
This means that the guideline is positioned parallel to the floor, creating an even and uniform length throughout the haircut.
By using a horizontal guideline, the hairdresser ensures that the layers are consistent and evenly distributed, resulting in a balanced and harmonious shape.