Reviewed by Dr. Caio Trentin, MD ·
The Face Is Built in Layers
The youthful face is full because of how it is constructed. Beneath the skin sit discrete pads of fat, organized into deep and superficial compartments that give the cheeks, midface, and temples their contour. Below those pads is the bony framework — the orbital rims, the cheekbones, the jaw — that the soft tissue drapes over. Binding it all is a network of collagen and elastin that keeps skin firm and connective tissue taut. When the face looks full and lifted, every one of these layers is doing its job. Volume loss is rarely one problem. It is several layers receding at once, which is why treating the skin surface alone often misses the underlying cause.
Fat Pads Shrink and Shift
Facial fat is not a single uniform cushion. It is a set of compartments, and they do not age together. Over time, certain pads lose volume while the ligaments that hold them in position loosen, so the fat that remains tends to descend. The result is a face that deflates in the upper and mid-regions and appears heavier toward the jawline and the folds beside the mouth. A high, full cheek can flatten and slide downward, casting shadows that read as tiredness even when nothing about the skin has changed. This redistribution — loss in some areas, sagging in others — is one of the most recognizable signatures of an aging face.
Bone Recedes Underneath
The least visible change is often the most consequential. The facial skeleton remodels throughout adult life, and key landmarks lose projection and surface area. The eye sockets widen, the cheekbones flatten, the area around the nose and mouth recedes, and the jaw loses height and definition. Because the soft tissue above depends on that bone for support, even modest skeletal change removes the scaffolding that fat and skin rely on. This is why two people with similar skin quality can age very differently: the underlying frame is changing shape beneath the surface, altering how light falls across the entire face.
Collagen and Elastin Decline
Skin owes its firmness to collagen and elastin, and both diminish with age. Production slows, existing fibers fragment, and the skin's ability to spring back is reduced. Sun exposure, smoking, and chronic inflammation accelerate this breakdown. The visible consequences are thinner, less resilient skin, finer lines, and a loss of the taut envelope that once held facial contours crisply in place. Collagen loss does not create the hollows of volume depletion on its own, but it compounds them — slack skin over a deflating, shifting foundation is what produces the characteristic look of an aged face.
How the Layers Combine
No single mechanism explains facial aging. A hollow temple, a flattened cheek, a deepening nasolabial fold, and a softening jawline frequently appear together because fat, bone, and collagen are receding in parallel. The art of assessment is reading which layer is driving the change in a given region. A midface that has lost deep fat is a different problem from one where the cheekbone has lost projection, even when the surface appearance overlaps. Sorting cause from effect is the entire point of a thorough evaluation, and it determines whether — and how — any intervention makes sense for a particular face. At FORMA, every facial assessment is performed by Dr. Trentin personally, not a delegated injector, and any plan is built around your individual anatomy and goals, determined at consultation. If you are noticing changes in your facial contour and want to understand what is driving them, a consultation is the place to start.
Questions
Is facial volume loss only about losing fat?
No. Fat is one of three contributors. The bone underneath loses projection and the collagen in the skin declines as well. Most aging faces show changes in all three layers at once, which is why an evaluation looks beyond the skin surface.
At what age does facial volume loss begin?
There is no single starting point, and it varies considerably between individuals based on genetics, sun exposure, and lifestyle. Subtle changes in fat, bone, and collagen are gradual and ongoing rather than sudden. An in-person assessment is the best way to understand where your face is in that process.
Can volume loss be assessed without committing to treatment?
Yes. A consultation with Dr. Trentin is an evaluation first. It identifies which layers are contributing to the changes you are seeing and whether any intervention is appropriate. Any recommendation is individualized and determined at consultation — there is no obligation to proceed.