Why faces lose volume

The word people reach for is usually “tired”. They tell me they look tired in photographs, or that they look tired when they do not feel it. What they are describing is almost always a change in the structure underneath rather than anything on the surface of the skin.

It helps to know that facial volume loss is not one process. It is at least four, they happen at different rates in different people, and which one is driving the change matters — because it determines what is worth doing and what is not.

The fat under your face is not one layer

It is a common assumption that the face has a single, even layer of fat that thins with age. It does not. Facial fat sits in discrete compartments, separated by connective tissue, and they behave independently.

The deeper compartments — the ones supporting the mid-cheek and the area beside the nose — tend to lose volume earlier. The more superficial ones tend to descend rather than shrink. That combination is why a face can look simultaneously hollow higher up and heavier lower down, which is a difficult thing to describe to someone and an easy thing to recognise in the mirror.

It also explains why the change rarely looks like uniform deflation. It looks like a redistribution, because that is what it is.

The bone changes too, which surprises people

The facial skeleton is not fixed in adulthood. It remodels throughout life. The eye socket widens, particularly at its lower outer edge. The upper jaw loses projection and rotates slightly backwards. The angle of the mandible becomes less acute.

These are small changes in absolute terms — millimetres over decades — but the soft tissue above depends on that scaffold for its position. A few millimetres of lost projection in the mid-face withdraws support from everything sitting on top of it.

This is the part patients find most unexpected, and it is also the reason some changes cannot be addressed at the surface. If the support underneath has moved, working only on the skin above it will not do much.

Collagen and elastin decline steadily

The dermis loses collagen gradually from the third decade onwards, and elastin does not regenerate meaningfully once it is damaged. The practical effect is that skin becomes less able to hold its own shape and more inclined to follow whatever is beneath it.

Sun exposure accelerates this more than anything else within your control. Smoking accelerates it. Significant weight fluctuation strains it. Genetics set the pace you start from, and they are not negotiable.

Ligaments loosen, so things move as well as shrink

A set of retaining ligaments anchors the soft tissue of the face to the bone underneath. They hold the fat compartments in position. As they lengthen and relax, the compartments they are holding descend.

This is why volume loss and descent are so often confused. Someone can lose very little volume overall and still look hollow, because what they had has moved downwards and is now sitting somewhere it did not used to.

What can be influenced, and what cannot

I would rather be straight about this than encouraging. The rate of bone remodelling is not something you can change. Genetics set a great deal of it. Age does the rest.

What is genuinely within your control is narrower but not nothing:

• Sun protection. The single most effective thing, by a considerable margin, and the one most people are inconsistent about.
• Not smoking. It affects both collagen and the small vessels that supply the skin.
• Weight stability. Repeated large fluctuations stretch tissue that does not fully recover.
• Skin health over time. Supporting the dermis is slow, unglamorous work, and it is the part most likely to be abandoned before it shows.

None of that will stop the process. It changes the pace, and it improves the material you are working with if you do decide to do something later.

What I look at in an assessment

When someone comes in describing hollowing, the first job is working out which of the four changes above is actually driving it — because the honest answer is sometimes that very little should be done, and occasionally that nothing should.

I look at the face at rest and in movement, because a change that only appears in animation is a different problem from one that is there constantly. I look at where light falls and where it does not. I look at symmetry, because faces are not symmetrical and the goal is never to make them so. I take a history, including anything done previously.

Then we talk about it. Options, if any are appropriate, are discussed in that appointment rather than decided beforehand, and there is no expectation that you proceed on the day or at all.

This article explains a process. It is general information, not clinical advice, and it is not a recommendation for any particular treatment. Whether anything is suitable for you is a matter for individual assessment.