It is becoming widely accepted that volume changes in the skin and soft tissue contribute greatly to age-related facial reshaping. A significant contribution to these volume changes is the loss of craniofacial skeletal support to the overlying soft tissue. Gravity, once considered the major culprit in facial aging, is now recognized to determine the direction, rather than the extent, of tissue deflation. Although the sequence of events observed in aging is somewhat predictable, its pace among individuals is variable and may be influenced by both intrinsic (eg, gender, genetics) and extrinsic (eg, photoaging, smoking, stress) factors. Changes in different tissue layers within a single ...