In short. Overfilling a junction widens the midface and produces a heavy look rather than a softer one, and depth at rest is the wrong target to judge the result by.
Key points
- A fold measured at rest is not what anyone sees in ordinary conversation.
- Faces are looked at in movement, in changing light, from the side.
- Judging a result by how flat the groove looks in a straight-on photograph at rest optimises for the one condition under which the face is never actually seen.
The treatment works exactly as described and the patient is still unhappy. The fold is shallower than it was, the face looks fuller rather than younger, and the change is difficult to name. This is the most common disappointment in this area, and it has a mechanical explanation rather than a matter of technique.
What was never going to happen
The fold is the junction between the cheek and the upper lip. Filling it does not move the cheek back to where it was, because nothing about injecting the groove changes the position of the structure above it. What the material does is occupy the step between two levels that are still different, which is a change in the surface and not in the arrangement underneath.
Where the extra width comes from
Material placed in a junction sits proud of the tissues on both sides of it. The effect is small from directly in front, which is the angle most photographs are taken from, and obvious from three-quarters and in profile, which is how faces are seen in a room. The fold reads shallower in the picture the patient was shown and the midface reads heavier in every other view.
Depth at rest is the wrong target
A fold measured at rest is not what anyone sees in ordinary conversation. Faces are looked at in movement, in changing light, from the side. Judging a result by how flat the groove looks in a straight-on photograph at rest optimises for the one condition under which the face is never actually seen.
Overfilling, and why it is tempting
The endpoint of filling a groove is not naturally defined. There is no structure to stop at, so the point at which enough has been placed is a judgement, and it is a judgement made in a room under one light with a patient who wants to see a difference. Adding a little more is easy; taking it back is not.
What the heavy look actually is
Patients describe it as their face having changed rather than their fold having gone. The midface has gained width, the shadow that gave the cheek its shape has been flattened, and the muzzle looks longer. It is not an over-reaction and it is not imagined: it is what happens when volume is added to a junction rather than to a cheek.
Three signs the plan is aimed at the wrong place
- The endpoint described is the fold being level with the skin around it.
- Nothing in the plan refers to the position or the volume of the cheek.
- Photographs are offered only from directly in front, and only at rest.
Why the fold is a junction rather than a line is set out in the guide to what a fold is. What a plan aimed at the cheek instead looks like is described in support placed for the cheek and, where the cheek has genuinely dropped, in when lifting is the answer.
Frequently asked questions
How soon after a flat fill would I notice the widening?
Usually once the initial swelling has settled, which takes longer than most people expect. In the first weeks the area can look fuller for reasons that have nothing to do with the material, and judging the result then is judging too early. What patients describe later is not a fold that has gone but a face that has changed shape, which is a different complaint.
If it does go wrong, what can be done about it?
It depends on what was placed. Some materials can be dissolved and some cannot, and where they cannot the option is to wait for the volume to settle over time or to treat around it. This is one of the reasons the assessment comes before the treatment: the correction is more difficult than the original plan would have been.
How would I know in advance whether I am at risk of this?
By asking what the plan is intended to change. If the answer describes supporting the cheek, the plan is addressing the mechanism. If the answer describes filling the fold until it is level with the surrounding skin, the plan is addressing the surface, and in a face whose cheek has descended that is the plan that produces a wider midface.
Risks & Limitations
- Filling the fold itself rather than the cheek widens the midface, and correcting that is harder than the original complaint.
- Material placed deep in this region can enter a vessel and obstruct the blood supply to skin, which is why the area is treated with more caution than most.
- Support placed to restore the cheek changes the midface without restoring a cheek that has genuinely descended.
- Thread lifting is temporary by design, and no rung on the ladder removes the fold itself.
When to Seek Care
- A fold that appeared over weeks, or is present on one side only.
- Weakness on one side of the face, numbness in the cheek or lip, drooling, or difficulty closing an eye — seek urgent care.
- Skin in a treated area that turns pale, grey, mottled or blistered, or severe pain after an injection.
- A lump that can be felt in the cheek or lip, or swelling with pain, redness or warmth.
References & Further Reading
- American Society of Plastic Surgeons (ASPS) — procedure and safety guidance
- National Institute for Health and Care Excellence (NICE, UK) — relevant guidance
- Cochrane Library — systematic reviews
- Chinese Medical Association Plastic Surgery Branch — clinical guidance
This page is patient education, not medical advice, and it does not cite individual studies. Discuss your own case with a qualified clinician. To arrange an assessment at Chongqing West District Hospital, see Contact & Consultation.