Can Chin Dimpling Treatment Cause Side Effects?

Written by Dr. Ashutosh Shah, M.Ch., DNB (Plastic Surgery)
Director, Elegance Clinic, Surat

Dr. Ashutosh Shah is a Board-Certified Plastic, Cosmetic and Reconstructive Surgeon with more than 22 years of surgical experience in cosmetic, reconstructive, and facial aesthetic procedures.

Yes, chin dimpling treatment can cause side effects, although many are temporary when the treatment is appropriately selected and performed by a qualified medical professional. The type of side effect depends largely on why the chin looks dimpled and which treatment is used. A chin with a pebbled or “cobblestone” appearance is often related to repeated activity of the mentalis muscle, which sits at the front of the chin. Botulinum toxin may be used to relax this muscle in selected patients, while other chin concerns may require a different approach.

Common temporary effects after an injectable treatment may include tenderness, redness, mild swelling, bruising, or a feeling of tightness around the chin. More noticeable problems can occur when the product affects nearby muscles. Because the mentalis contributes to lower-lip movement and chin shape, inaccurate placement or excessive muscle relaxation can sometimes produce changes in smiling, lip movement, or mouth closure. Clinical literature has specifically described smile asymmetry, lower-lip drooping, and difficulty with mouth closure as possible consequences of poorly targeted mentalis injections.

This does not mean chin dimpling treatment is inherently unsafe. It means that the lower face requires careful anatomical assessment. The goal is usually to soften excessive muscle activity while preserving normal facial expression and movement.

Key Takeaways

• Chin dimpling can be related to repeated activity of the mentalis muscle.
• Botulinum toxin may reduce excessive mentalis contraction in selected patients.
• Mild injection-site effects such as redness, tenderness, swelling, or bruising can occur.
• Poorly positioned or excessive treatment may affect lower-lip movement or smile symmetry.
• A dimpled chin caused by a structural issue may need a different treatment from muscle-related dimpling.
• A qualified assessment is important before injecting the lower face.
• Unusual or significant symptoms after treatment should be medically reviewed.

What Causes a Dimpled Chin?

Chin dimpling is often linked to repeated contraction of the mentalis muscle. When this muscle contracts strongly, the skin over the chin can develop small pits, creases, or a pebbled appearance.

Some people naturally have stronger mentalis activity. In others, the appearance becomes more noticeable with age or changes in the soft tissues of the lower face.

The important point is that a dimpled chin is not always just a surface wrinkle.

Mentalis muscle: A small muscle at the front of the chin that helps move and support the lower lip and contributes to chin movement and expression.

Understanding whether muscle activity is the main cause helps determine whether muscle-relaxing treatment is appropriate.

What Side Effects Are Most Common?

Most minor effects after an injectable treatment are temporary and occur around the treatment area.

A patient may experience:

• Mild redness
• Tenderness
• Small areas of swelling
• Bruising
• Temporary tightness
• Mild discomfort

These effects are usually related to the injection itself rather than the intended action of the treatment.

The lower face can be particularly noticeable during recovery because even small changes around the mouth and chin may be visible when talking or smiling.

Can Chin Treatment Affect Your Smile?

Yes, this is one of the important considerations when treating the mentalis region. The muscles around the mouth work together, so weakening one area too much or allowing treatment to spread into nearby muscles can temporarily alter facial movement.

Possible effects may include:

• A slightly uneven smile
• Lower-lip movement changes
• Difficulty moving the lower lip normally
• A different appearance during talking
• Temporary difficulty closing the mouth completely in uncommon cases

A review of mentalis injection anatomy specifically notes that inaccurate treatment can contribute to lower-lip ptosis, smile asymmetry, and mouth-closure problems.

These effects are usually related to muscle activity rather than permanent damage, but they can be concerning to patients while they are present.

Can Chin Dimpling Treatment Make the Chin Look Uneven?

It can, particularly when muscle relaxation is uneven.

One published case described paradoxical bulging after botulinum toxin treatment of the mentalis. The proposed explanation was uneven relaxation of different parts of the muscle, leaving some areas more active than others.

This illustrates why treating the chin is not simply a matter of placing injections wherever the dimples are visible.

The clinician needs to consider:

• Muscle position
• Muscle thickness
• The patient’s facial movement
• Chin shape
• Existing asymmetry
• The pattern of muscle contraction

A subtle difference before treatment can also become more noticeable temporarily when muscle movement changes.

Is Chin Dimpling Treatment Permanent?

Treatments aimed at reducing muscle activity are generally temporary. As the effect wears off, the mentalis muscle gradually becomes active again and the chin may return toward its previous appearance.

One early clinical report on mentalis botulinum toxin treatment noted that improvement returned as the effect of the treatment subsided.

This temporary nature can be useful because any unwanted muscle-related effect is also generally expected to improve as the treatment wears off.

However, patients should not assume that every problem will resolve immediately. The duration varies between individuals and depends on the product, dose, treatment area, and individual response.

What Determines the Risk of Side Effects?

Several factors can influence the likelihood of unwanted effects.

Injection accuracy

The mentalis is located close to other muscles involved in lower-lip and mouth movement. Precise placement helps limit unwanted effects.

Individual anatomy

Muscle size, position, facial proportions, and natural asymmetry vary from person to person.

Treatment amount

More treatment is not automatically better. Excessive weakening can produce an unnatural or overly relaxed appearance.

Diagnosis

If the chin’s appearance is caused mainly by skin quality, fat distribution, a structural chin shape, or another problem, relaxing the muscle may not address the real issue.

Product quality

Unapproved or misbranded injectable products carry avoidable safety concerns. The FDA has warned about unapproved botulinum toxin products and associated adverse events.

What About Other Treatments for Chin Dimpling?

Not every dimpled or irregular chin should be treated with botulinum toxin.

Depending on the underlying issue, a patient may instead need assessment for:

• Facial-volume treatment
• Chin contour correction
• Skin-resurfacing treatment
• Scar treatment
• Other cosmetic approaches

For example, muscle-related dimpling is different from a permanent indentation caused by scar tissue.

Treating the visible line without understanding its cause can produce disappointing results.

What Should You Expect After Treatment?

The chin may look slightly different immediately after treatment because of the injection itself. The intended muscle-related improvement develops over time rather than necessarily appearing at once.

During the early period, patients may notice:

At first: Mild redness, swelling, or tenderness around the injection sites.

As the treatment takes effect: The mentalis becomes less active and the chin may appear smoother.

Later: The effect gradually wears off and muscle movement returns.

Patients should avoid judging the result while temporary swelling or bruising is still present.

When Should You Contact a Doctor?

Most minor post-treatment effects are not emergencies. However, unusual or worsening symptoms should not be ignored.

Medical advice is appropriate if you experience:

• Significant or worsening facial weakness
• Marked difficulty closing the mouth
• Severe swallowing difficulty
• Breathing difficulty
• Major asymmetry
• Increasing swelling or pain
• Signs of infection
• A rapidly worsening reaction

The approved botulinum toxin prescribing information includes warnings about spread of toxin effects, which can rarely cause more widespread muscle weakness and problems involving swallowing or breathing.

These serious effects are uncommon, but they explain why injectable treatment should be performed by a qualified medical professional rather than with products obtained from unreliable sources.

Who Should Consider a Consultation?

A consultation is particularly useful when chin dimpling is:

• Persistent
• Becoming more noticeable
• Associated with strong chin contraction
• Affecting facial appearance
• Accompanied by lower-lip movement changes
• Difficult to explain

The specialist can observe the chin both at rest and during movement. This provides more information than looking at a single photograph.

For patients considering treatment in Surat, Dr. Ashutosh Shah at Elegance Clinic can assess the chin and determine whether muscle-related treatment or another approach is more appropriate.

About Dr. Ashutosh Shah and Elegance Clinic

Dr. Ashutosh Shah, M.Ch., DNB (Plastic Surgery) is a Board-Certified Plastic, Cosmetic and Reconstructive Surgeon and Director of Elegance Clinic, Surat. He has more than 22 years of surgical experience and specialises in cosmetic, reconstructive, and facial aesthetic procedures.

Elegance Clinic was established in Surat in 2014 and provides cosmetic surgery, plastic surgery, dermatology, hair restoration, laser treatments, and reconstructive procedures. The clinic focuses on personalised treatment planning, patient safety, and natural-looking results.

Conclusion

Chin dimpling treatment can cause side effects, but the likelihood and type depend greatly on the underlying cause of the dimpling, the treatment selected, the patient’s facial anatomy, and how accurately the treatment is performed.

When the problem is caused by excessive mentalis activity, carefully planned botulinum toxin treatment may soften the pebbled or dimpled appearance. However, the mentalis also contributes to lower-lip movement, so treatment that is too deep, too broad, or poorly positioned can temporarily affect facial expression or mouth movement.

The safest approach is therefore not simply to reduce the dimpling as much as possible. It is to achieve an appropriate improvement while preserving natural facial movement.

A consultation with Dr. Ashutosh Shah at Elegance Clinic, Surat, can help determine why the chin appears dimpled and whether treatment is appropriate for your facial anatomy and goals.

Book a personalised consultation to discuss chin dimpling treatment, expected results, and potential side effects.

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