Concerns / Lips and Lower Face / Chin Texture
Chin dimpling: why the chin
looks pebbled, and what it is not
A chin that looks bumpy, quilted or like the surface of an orange has a specific cause, and it is not the one most people assume.
It is also frequently confused with a completely different feature, which is worth clearing up before anything else, because the two need opposite answers.
Dr Ibrahim Hawli
MBBS · Registered Medical Practitioner
In short
Chin dimpling comes from the mentalis, a paired muscle that inserts its fibres directly into the skin of the chin at depths of roughly 7 to 11 mm. When it contracts, individual fibres pull on individual points in the dermis, so the surface puckers unevenly rather than folding into a single line. That is why the texture reads as pebbled. It is entirely different from a cleft chin, which is a bony feature present from birth. And in some people the muscle is overactive because it is being used all day to hold the lips closed, which is a finding that belongs to a dentist or orthodontist rather than a cosmetic clinic.
01 / Clear This Up First
Dimpling on the chin and a
cleft chin are not the same thing
These get called the same names and they are not related. The confusion is not the public’s fault. “Chin dimple”, “dimple chin”, “butt chin” and “bum chin” are all used for the cleft, which is a bone finding. “Dimpling”, “pebbling” and “orange peel” describe the muscle finding.
The two can coexist in the same person. They involve different anatomy and they respond to entirely different approaches.
Finding one
A cleft chin
A Y-shaped fissure with an underlying bony peculiarity, where the two halves of the jaw did not fully fuse during development. Present from birth. Does not change with muscle activity, whatever expression you make.
Finding two
Chin dimpling
A surface texture, not a structural groove. Produced by a muscle pulling on the skin above it. Changes with expression, becomes more pronounced when the chin is tensed, and worsens with age.
A quick way to tell them apart
Relax your face completely and look in a mirror. If you see a single central groove that stays put whatever expression you make, that is a cleft. If you see multiple small dimples and ridges that appear or worsen when you tense your chin or push your lower lip forward, that is dimpling. This page is about the second one.
02 / Anatomy
The muscle that pulls on
your skin directly
The mentalis is a paired muscle at the tip of the chin. It originates from the mental protuberance of the mandible near the midline and inserts into the soft tissue and skin of the chin. It is supplied by the mandibular branch of the facial nerve, and its action raises the central part of the lower lip. Sometimes called the pouting muscle, because it is what produces the expression people pull for a photograph.
The detail that matters
Its fibres insert directly into the dermis
6.7–10.7
millimetres
The measured depth at which mentalis fibres insert into the dermal layer of the chin, from a 2023 anatomical review.
Most facial muscles move skin indirectly. This one is attached to the skin itself. When it contracts, it does not push the surface. It pulls it.
Some sources describe the mentalis as acting like a chin strap. When it is too strong or too tight it can reduce chin projection, and in some cases distort chin shape, quite separately from the texture it produces.
03 / The Pattern
Why the texture is pebbled
rather than a single line
This follows directly from the anatomy and it explains the specific appearance.
A muscle attached to skin at one broad line would produce a crease. The mentalis is attached at many individual points, and individual muscle fibres pull on individual points in the dermis. So when it contracts, the surface puckers unevenly.
Peau d'orange
French for orange-peel skin, and the clinical name for the appearance. Patients describe it as pebbled, cobblestoned, quilted, or looking like a golf ball. The pattern is irregular and asymmetric in most people, because it follows where the fibres happen to insert, not a neat anatomical line.
04 / Photos vs Mirror
Why a pebble chin looks
worse in photographs
Patients frequently say the texture looks far worse in photos than it does in the mirror, and conclude that something is wrong with the camera.
Nothing is wrong with the camera.
Photographs capture expressions at peak muscle activation. A mirror shows a face that is composing itself, holding still, and consciously relaxing. A camera catches the chin mid-sentence, mid-smile, mid-concentration.
If your chin looks smooth when you check it deliberately and pebbled in every photograph, that is not inconsistent. It is a dynamic finding, and it tells you something useful: the muscle is the driver, and the skin is still recovering between contractions.
05 / Try This Now
The lip purse test
you can do now
This is the assessment used clinically to establish whether mentalis hyperactivity is producing the texture, and there is no reason you cannot try it yourself before you come in.
The method
Sit in front of a mirror in even light. Relax completely and note what the chin surface looks like. Then purse your lips as though you were about to whistle, or push your lower lip forward into a pout, and hold it.
Result one
Dimples and ridges appear or intensify sharply. The mentalis is contributing significantly.
Result two
The surface looks much the same in both states. Skin quality or an established change is more likely.
Result three
A single central groove that does not move at all. That is a cleft, and it is a bone finding.
Bring what you observed to your appointment. It is genuinely useful and patients are rarely asked.
06 / Drivers
What makes the
mentalis overactive
Several things, and they are not all cosmetic. The last one has its own section next, because it is the most useful finding on this page.
01
Habitual expression
The muscle activates during talking, smiling, concentrating and, notably, holding back emotion. Some patients describe the chin balling up or tightening as the day goes on.
02
Genetic predisposition
Some people simply have a more active mentalis, and the texture appears from a younger age with no other cause.
03
Age and skin change
The muscle may have always behaved this way. What changes is the skin’s ability to spring back, covered further down the page.
04
Compensating for lip position
The one that matters most, and the subject of the next section.
07 / Not Cosmetic
When chin dimpling is not
a cosmetic question
This section exists because almost no cosmetic page includes it, and for some readers it will be the most useful part of the page.
The mentalis has a functional job. Where the upper and lower lips do not touch at rest, a condition called lip incompetence, contraction of the mentalis can bring temporary but strained oral competence.
If your lips do not naturally meet when your face is at rest, you may be using this muscle continuously, all day, simply to keep your mouth closed. A muscle being used that way is not overactive by habit. It is overactive because it is doing a job something else should be doing. The texture is a symptom.
Lip incompetence is associated with dental and skeletal factors, and with habitual mouth breathing. The appropriate first step in that situation is a dental, orthodontic or airway assessment, not a cosmetic one.
See a GP or dentist first if you have
- Lips that do not touch when your face is completely relaxed
- Habitual mouth breathing, including at night
- Waking with a dry mouth
- A chin that feels tight or tired by the end of the day
- A history of overbite, open bite, or orthodontic treatment not completed
- Snoring or disrupted sleep
Addressing the texture without addressing the cause, where a cause like this exists, treats the symptom and leaves the mechanism running.
08 / Not All The Same
Four different chin textures,
routinely confused
“Chin wrinkles” covers at least four distinct findings, and they have different causes. Most people over forty have some combination.
01
Horizontal mental crease
The deep groove across the chin between the lower lip and chin point. Caused by years of mentalis contraction combined with volume loss underneath.
02
Cobblestone or dimpled texture
The pebbly, orange-peel surface that appears during contraction and eventually persists at rest. The subject of this page.
03
Prejowl lines
Vertical or diagonal creases on either side of the chin, forming as the jaw recedes and fat pads deflate in that specific zone.
04
Fine surface lines
Shallow crisscross wrinkles across the chin, related mostly to collagen and elastin loss from sun damage, smoking or normal ageing.
09 / Progression
How a dimpled chin
becomes permanent
The progression is predictable and worth understanding, because where you are on it determines what can be achieved.
Stage one
Dynamic only
The texture appears only during expression and disappears completely at rest. The skin has enough collagen and elasticity to bounce back after each contraction.
Stage two
Lingering
The texture persists briefly after the expression ends, then settles.
Stage three
Established
Visible at rest. Over years, repetitive contraction has etched the pattern into the skin. The muscle is still driving it, but the dermis has been remodelled around the pattern.
At stage one, reducing the mechanical stimulus is the main lever. At stage three, the skin itself has changed, and improving dermal quality becomes as relevant as reducing muscle activity. Most people arrive somewhere between two and three, having noticed it in photographs for a while before it became visible in the mirror.
10 / Skin's Role
What the skin
itself contributes
The muscle is the driver, but the skin decides how much the driver shows. In younger skin with plenty of collagen and elasticity, the texture bounces back after each contraction. As the dermis thins, the same muscle activity produces a deeper and more persistent pattern.
A thicker, more elastic dermis will not hide a hyperactive mentalis on its own. What it does is make the dimples shallower and softer at rest.
For fine surface texture on the chin, topical retinoids have the strongest evidence base. A large network meta-analysis found prescription-strength retinoids and over-the-counter retinol both produced significant improvement in surface texture measures. Daily sun protection matters for the same reason it matters everywhere.
11 / What Does Not
Two things worth saying plainly
Aggressive chin massage and pinching
The mentalis already receives plenty of mechanical stimulation. Vigorously massaging or pinching a muscle whose problem is overuse is not a neutral intervention.
Facial exercises targeting the chin
The mechanism here is a muscle that is already contracting too much. Exercising it further is working in the wrong direction.
Neither is dangerous. Both are commonly recommended online and neither addresses the mechanism.
12 / Assessment
What a chin texture
assessment covers
Photographs may be taken as a clinical record, in standard views and both at rest and in animation, and are not used for advertising.
- Whether the texture is dynamic, present at rest, or both, assessed with the lip purse test
- Whether a cleft is present, and whether it is contributing to what you have noticed
- Pattern and distribution of the dimpling, and its symmetry
- Depth of the mental crease between the lower lip and chin point
- Chin projection, since a tight mentalis can reduce it
- Lip position at rest, and whether the lips meet without effort
- Any history of mouth breathing, orthodontic treatment or bite problems
- Skin quality, thickness and elasticity over the chin specifically
- Presence of prejowl lines or fine surface lines as separate findings
- Sun exposure history and current skincare
- Whether anything is clinically appropriate, including the option of nothing, and whether a dental, orthodontic or airway assessment is the appropriate first step
13 / Before You Decide
What to know before
your consultation
Every option carries potential risks as well as potential benefits, and no cosmetic medical procedure is risk free.
The lower face carries a specific consideration. Several muscles work in close proximity here, and they control lower lip position and movement. Affecting the wrong one can alter the smile or lower lip function. That is why this region is treated conservatively and assessed in person rather than from an image.
Assessed at consultation
Factors that may make an approach inadvisable
- Pregnancy or breastfeeding
- Active infection or inflammation over the chin
- Certain neuromuscular conditions
- Certain medications, including blood thinning medication
- Untreated lip incompetence, mouth breathing or bite problems, where a dental or orthodontic assessment is the appropriate first step
- Pre-existing lower lip asymmetry or weakness
- Previous surgery affecting the chin or lower lip
- Expectation that a cleft chin will change, which is a bone finding
- Unrealistic expectations about achievable change
Individual results vary. Not all people are suitable candidates. In some cases the appropriate recommendation is that nothing be undertaken, or that a different practitioner is the right person to see.
14 / What Happens
What happens at your consultation in Glenroy
Appointments run 30 to 45 minutes. A consultation fee applies and is confirmed when you book. No referral is required to attend.
01
Discussion
What you have noticed, whether it shows more in photographs than in the mirror, how long it has been present, orthodontic and dental history, breathing pattern, medical history and current medications.
02
Assessment
The chin is examined at rest and in animation, with the lip purse test, assessment of lip position at rest, chin projection, mental crease depth and skin quality.
03
Information
Whether the finding is dynamic or established, whether a cleft is contributing, whether lip position is driving the muscle, what is clinically appropriate, whether referral is the better first step, risks, alternatives and the option of proceeding with nothing.
04
Decision
You are not asked to decide on the day. Time to consider information is part of informed consent.
15 / Location
Chin texture assessment in Melbourne:
where the clinic is
The practice is in Glenroy, in the City of Merri Bek, roughly 13 kilometres north of the central business district. The clinic is on Glenroy Road, close to Glenroy Station on the Craigieburn line and the Pascoe Vale Road corridor.
Patients attend from Glenroy, Hadfield, Fawkner, Oak Park, Gowanbrae, Pascoe Vale, Coburg North, Broadmeadows, Campbellfield and Craigieburn.
16 / Common Questions
Questions patients
ask
If your question is not answered here, ask it at your consultation. There is time set aside for exactly that.
The mentalis muscle, which inserts its fibres directly into the skin of the chin at depths of roughly 7 to 11 mm. When it contracts, individual fibres pull on individual points in the dermis, so the surface puckers unevenly rather than folding into a single line.
No. A cleft chin is a Y-shaped groove with an underlying bony feature, present from birth, and it does not change with expression. Dimpling is a surface texture produced by muscle pulling on skin, and it changes when you tense the chin. They can coexist but they are different findings.
Photographs capture expressions at peak muscle activation. A mirror shows a face composing itself and consciously relaxing. If the texture appears in photos and not in the mirror, it is a dynamic finding and the muscle is the driver.
Purse your lips as though whistling and hold it while looking in a mirror. If dimples and ridges appear or intensify sharply, the muscle is contributing significantly. If the surface looks much the same relaxed and pursed, skin quality or an established change is more likely.
Yes, and it is worth checking. Where the lips do not meet at rest, the mentalis can be contracting continuously just to keep the mouth closed. If your lips do not touch when relaxed, you breathe through your mouth, or you wake with a dry mouth, a dental, orthodontic or airway assessment is the appropriate first step.
No. The mentalis already receives plenty of mechanical stimulation, and its problem here is overuse. Exercising or vigorously massaging it works in the wrong direction. Neither is dangerous, and neither addresses the mechanism.
The muscle activity may not change much. What changes is the skin. Younger skin with more collagen springs back after each contraction. As the dermis thins, the same muscle activity leaves a deeper and more persistent pattern, which eventually shows at rest.
It can improve what the muscle is pulling on, over six to nine months rather than weeks. Topical retinoids have the strongest evidence base for surface texture. Skincare will not reduce muscle activity.
A consultation fee applies and is confirmed when you book.
Related concerns
The lower face is assessed as a whole
Written and clinically reviewed by
Dr Ibrahim Hawli, MBBS
Level 1 Certification, American Academy of Aesthetic Medicine. Advanced training in non-surgical nasal work with Aesthetic Intelligence.
Last reviewed: [insert month year] · Next review due: [insert month year]
Your first step is
an assessment.
This page provides general information about cosmetic medical consultations and does not constitute medical advice. Any cosmetic medical procedure carries risks. Individual outcomes vary and not all people are suitable candidates. Surgery is not performed at this practice. Any decision follows an individual consultation and assessment with a registered medical practitioner.