Facial volume loss is not simply a surface change.  It reflects deeper shifts in facial structure, including fat compartments, bone support, soft tissue position, and skin quality.  Non-surgical volume restoration can help in selected patients, but the best results come from careful assessment, anatomical planning, and restraint rather than simply adding volume where the face looks hollow or tired.

This guide outlines the relevant anatomy, how to distinguish between common causes of under-eye changes, and where volume correction may have a limited role within a broader treatment plan.