In short. The fold beside the mouth is often confused with the jowl, the chin crease and the shadow of a receding chin. Why patients point at one and mean another.
Key points
- Where the chin recedes, the fold beside it appears deeper than the tissue explains, because the eye judges the fold against the projection of the chin rather than on its own.
- That is a structural reading rather than a soft-tissue one, and it is why the profile is examined and not only the front of the face.
Patients point at the fold beside the mouth and call it their marionette lines. Others use the same words for a jowl, for the crease above the chin, and for a shadow cast by a chin that has receded. The words are similar and the problems are not.
The fold beside the mouth
A crease running from the corner of the mouth downward, visible on the front of the face. It is produced by volume lost around the mouth, tissue that has descended from the cheek, and a muscle that pulls the corner down. It is the complaint most people are describing.
A jowl, which is a different thing
Tissue that has descended below the jawline, so the outline of the lower face is no longer a clean line. It shows in profile rather than on the front of the face. It develops from the same descent that contributes to the fold, which is why the two arrive together, and it is treated differently.
The crease above the chin
A curved line between the lower lip and the chin, produced by volume loss and by the muscle that pushes the chin upward. It is often treated alongside the fold beside the mouth, because the two are read together, and treating only one can leave the chin area mismatched.
A shadow is not a fold
Where the chin recedes, the fold beside it appears deeper than the tissue explains, because the eye judges the fold against the projection of the chin rather than on its own. That is a structural reading rather than a soft-tissue one, and it is why the profile is examined and not only the front of the face.
What people usually mean
Most often the complaint is about the fold and the general heaviness of the lower face together, because the two are experienced as one thing in a mirror. What has usually changed is where the tissue sits rather than how the skin is marked, which is why a treatment aimed at the line itself often disappoints.
Why the naming matters before treatment
A fold produced by descent improves with a lift and not with filler. A fold produced by volume loss improves with staged volume and not with a device. A chin that recedes is a structural question. A treatment chosen before the distinction is made is a guess, and the lower face is a poor place to guess.
Findings that are not about appearance
- A mouth corner that has dropped over hours or days, or weakness on one side of the face.
- Numbness in the lip, chin or cheek, or drooling, or a change in speech.
- A new lump, jaw pain, or a bite that no longer meets as it did.
What actually produces the fold is set out in volume loss, descent or muscle pull. How the difference is established in an examination is described in how the fold is assessed, and the ceiling that applies to all of it is set out in the limit of treatment.
Frequently asked questions
What is the difference between a marionette line and a jowl?
A jowl is tissue that has descended below the jawline and shows in the outline of the lower face. A marionette line is a fold in the skin beside the mouth that shows on the front of the face. They often develop together because descent produces both, and they are addressed in different ways, which is why the distinction is worth making before anything is treated.
Why does the crease under my lower lip get treated at the same time?
Because the chin is part of how the fold beside the mouth reads. Volume lost in the chin and the crease above it changes how deep the fold appears, and treating one without the other can leave the lower face looking uneven rather than improved. The chin is assessed with the fold rather than after it.
Can a shadow look like a fold?
It can. Where the chin recedes, the fold beside it appears deeper than the tissue alone would explain, because the eye reads the whole area against the projection of the chin rather than the fold in isolation. That is a structural reading, and it is why the assessment looks at the profile rather than only at the front of the face.
Risks & Limitations
- Repeated filler in the lower face accumulates over years, and an over-filled area is harder to correct than an under-filled one.
- Filler does not lift descended tissue, so adding volume while the tissue above continues to descend can leave the area looking heavier.
- A lift improves the fold and does not erase it, because the muscle recreates it with every expression.
- Bruising, swelling and unevenness are common after treatment in this mobile area, and the result is judged weeks later rather than immediately.
When to Seek Care
- A mouth corner that has dropped over hours or days, or weakness on one side of the face — seek urgent care.
- Numbness in the lip, chin or cheek, drooling, or a change in speech.
- A new lump in the lower face or jaw, or jaw pain with clicking or locking.
- A bite that no longer meets as it did, or difficulty closing an eye.
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.