Layered hair is a hair style that gives the illusion of length and volume using long hair for the illusion of length and short hair for volume, this way it is easy to style and manage. Hair is arranged into layers, with the top layers (those that grow nearer the crown) cut shorter than the layers beneath. This allows the tips of the top layers to blend apparently seamlessly with layers beneath.
More recent versions of the hairstyle involve making clear distinction between the various layers so that they do not blend seamlessly. In some cases, hair colouring can be applied to certain layers and not others to achieve a distinctive effect.
The layered hair cut is done by lifting the hair perpendicular to the head and cutting it straight across. Also quick layered cut can be achieved by putting the hair in a high ponytail and cutting it (sometimes termed as "compact cutting").
Sliding haircut : Section hair to 4 parts, start with back section and cut radially at 20 deg angle. Transition over the ear serves as guideline for the front sections. Creates a soft layered ends, but predominantly gives the one-length look. Suitable for medium wavy textures.
Graduated Bob : Section hair to 4 parts. Cut radially to 90 deg. Deeper layers than Sliding haircut.
Angled bob (or the "Rihanna bob") : Section to 4 parts. Cut to central axis at back at 90 deg angle.
Blended Elevation : Here the top section (bob section) is cut 90 deg while the side sections are cut 180 deg to the length of the top section. the occipital and nape sections are cut 90 deg. In this form of layering there is an "elevated" group of layers formed due to shorter top section and then it blends with the softer side and back layers. Not suited for wavy or curly hair, but for straight or slightly wavy hair.
Reverse Graduation : Make a six section and cut the bob section at 90 deg to required length. All other sections are cut to the bob section at 180 deg. Suitable for both medium wavy and straight hair, but not for very wavy or curly hair.