Layering hair before and after, a technique involving cutting hair into layers of varying lengths, transforms its texture and volume. A popular example is the iconic "Rachel" haircut from the 90s TV show "Friends," featuring layered, face-framing strands.
Layering enhances hair's versatility, making it easier to style and manage. It adds movement and body, reducing bulk in thick hair while adding volume to fine hair. Historically, layering emerged in the 1920s as women embraced shorter, more manageable hairstyles.