Layering
Cutting the hair to several lengths so shorter pieces sit over longer ones, for lift and movement.
Also: layers, layered cut
Layering means cutting the hair to different lengths so that shorter hair lies over longer hair. The hair is lifted away from the head, often at 90 degrees or higher, and cut against a travelling guide. Layers remove weight, add lift at the crown, help curls and waves form, and give movement to long hair. Long layers keep most of the length; short layers, as in the shag, create a rounded, choppy shape. Fine hair can lose fullness with too many layers.