Tired of looking angry, annoyed or constantly tense?
Deep lines between the eyebrows can make the face appear stern or stressed, even when you feel relaxed. Glabellar frown lines commonly develop from repeated facial expressions such as frowning or squinting and tend to become more noticeable over time [1].
Botulinum toxin injections can help soften these lines by relaxing the overactive muscles responsible for their formation. The aim is a smoother, more rested appearance while preserving natural facial expression.
Why choose treatment at APAX Medical & Aesthetic Clinic?
Experienced and medically trained aesthetic practitioners
Personalised treatment plans tailored to your facial anatomy
Results that typically last 4–6 months
Natural-looking outcomes without a stiff or frozen appearance
Treatments available from $250 onwards
Book your consultation today to discuss whether glabellar frown line treatment is suitable for you and to receive a plan designed around your concerns and goals.
Glabellar frown lines are vertical or curved lines between the eyebrows caused by repeated muscle contraction during frowning or concentration.
What are glabellar frown lines?
Glabellar frown lines are vertical lines or creases that form between the eyebrows. They develop mainly from repeated facial movements such as frowning, concentrating or squinting. Over time, these lines may become visible even when the face is at rest.
These lines can give the appearance of anger, tension or irritation, which may not reflect how a person actually feels. Although glabellar frown lines tend to become more noticeable with age, they can affect individuals at different stages of life.
Since FDA approval in 2001, botulinum toxin to the glabellar region is one of the most popular aesthetic treatments. With precise injections, Dr. Ng believes that an approach that takes into account your glabellar wrinkle type, anatomy and other facial features will provide a natural result. When injected into the muscle directly, the muscles relax over 7-14 days improving the appearance of both resting and active movement lines. A tailored approach prevents the “frozen”, unnatural look, while also providing long lasting results.
Glabellar frown line wrinkles can make the face appear tense or stern and may affect how confident and relaxed you feel.
How do you get glabellar frown lines?
Glabellar frown lines develop as a result of repeated muscle movement in the area between the eyebrows. Each time the brow muscles contract during frowning, concentrating or squinting, the overlying skin folds along the same lines. With time, these folds become more pronounced and may remain visible even when the face is relaxed.
Wrinkles generally form at right angles to the direction of muscle contraction. In the glabellar region, this leads to different line patterns depending on individual muscle strength, facial structure, and expression habits [3]. Some people develop vertical lines commonly referred to as “11 lines”, while others may notice horizontal or slightly angled lines.
Factors such as ageing, reduced skin elasticity and cumulative facial movement contribute to the deepening of these lines. The variation in pattern explains why glabellar frown lines look different from one person to another and why treatment needs to be carefully tailored to the individual.
Which muscles are involved in the formation of glabellar frown lines?
Glabellar frown lines form due to the combined action of several interconnected muscles in the area between the eyebrows. Understanding how these muscles function, and how they vary between individuals, is essential for planning safe and effective treatment.
Corrugator supercilii muscles — these muscles draw the eyebrows inwards and downwards. They are primarily responsible for the vertical “11” lines that appear between the eyebrows when frowning or concentrating.
Procerus muscle — the procerus pulls the inner eyebrows downwards, contributing to horizontal or slightly curved lines across the bridge of the nose.
Frontalis muscle — although not directly responsible for glabellar frown lines, the frontalis muscle influences brow position and upper facial balance. Its activity is considered during treatment planning to maintain a natural and harmonious result [4].
Because these muscles work together, careful assessment of muscle strength, movement patterns, and facial anatomy is required to achieve optimal results while preserving natural expression.
The procerus, corrugator supercilii and frontalis are the main muscles that contribute to the glabellar complex.
What are the types of glabellar frown lines?
Glabellar frown lines do not appear in the same way in everyone. Variations in muscle strength, movement patterns and facial anatomy lead to different frown line formations. Several recognised patterns have been described, and identifying the specific pattern is important when planning treatment.
Two vertical lines that angle slightly towards each other, forming a V shape. This is one of the most frequently seen patterns.
Corrugator supercilii
U-pattern
A broader, more curved configuration where the lines form a U shape, reflecting a wider area of muscle involvement.
Corrugator supercilii with adjacent glabellar muscles
Omega (Ω) pattern
A combination of vertical and curved lines resembling the Greek letter omega, indicating more complex muscle interaction.
Corrugator supercilii and procerus
Converging arrows pattern
Multiple short lines pointing towards the centre of the glabella, creating an inward converging appearance.
Strong, coordinated corrugator activity
Inverted omega pattern
A variation of the omega pattern with reversed curvature, resulting in a different distribution of lines across the glabellar area.
Corrugator supercilii and procerus
Glabellar frown lines can be graded from none to severe, both at rest and during maximum frown, reflecting variations in muscle activity and line depth.
Clinical note: Identifying the specific glabellar frown line pattern allows injection points and dosage to be tailored accurately, helping achieve effective line reduction while preserving natural facial movement and balance.
When should you seek treatment for glabellar frown lines?
Glabellar frown lines often begin as mild lines that appear only during facial expression and gradually become deeper and more persistent over time. In the early stages, these lines are considered dynamic, meaning they are visible when frowning or concentrating but fade when the face is relaxed. As the skin loses elasticity and muscle activity continues, lines may become static, remaining visible even at rest.
Upper facial wrinkles, including glabellar frown lines, have been associated with changes in self-perception, perceived age, and emotional expression, sometimes creating an appearance that does not reflect how a person feels.
You may wish to consider assessment or treatment if:
Frown lines are visible during expression and are becoming more noticeable
Lines remain visible even when the face is relaxed
Your facial expression appears tense, angry or tired despite feeling otherwise
You are seeking early intervention to slow the progression of deeper lines
How are glabellar frown lines treated?
Dynamic glabellar frown lines are most effectively treated with botulinum toxin injections, which help relax the muscles responsible for repeated frowning and brow contraction. This reduces the appearance of lines while maintaining natural facial expression.
What the treatment involves:
Assessment and planning — treatment begins with a detailed assessment of facial movement, muscle strength and frown line pattern. Injection points and dosage are carefully planned based on individual anatomy.
Preparation and comfort — the skin is cleansed and a topical numbing cream may be applied to enhance comfort prior to the procedure.
Injection process — botulinum toxin is injected into specific muscles using a fine needle. The procedure is quick, and most patients experience only mild, short-lived discomfort.
Onset and results — early effects may be noticed within 24–48 hours, with optimal results developing over 7–14 days as the muscles gradually relax.
Duration of effect — results typically last 3–4 months, after which repeat treatment may be considered to maintain the outcome.
Botulinum toxin is injected into specific glabellar muscles using a fine needle, with the procedure being quick and associated with only mild, short-lived discomfort.
Our Approach — How Dr Ng Treats Glabellar Frown Lines
Botulinum toxin has been used for the treatment of glabellar frown lines since its regulatory approval in 2001 and remains one of the most widely performed aesthetic procedures worldwide [6]. At APAX Medical & Aesthetic Clinic, treatment is guided by precision, anatomical understanding and careful assessment rather than a standardised dosing approach.
Dr Ng tailors each treatment based on the pattern and depth of the frown lines, underlying muscle activity, facial anatomy, and individual aesthetic goals. This personalised approach helps achieve a balanced result that softens lines without compromising natural facial movement.
Botulinum toxin is injected directly into the targeted muscles, allowing them to relax gradually over 7–14 days. This improves the appearance of both dynamic lines formed during expression and static lines visible at rest. Careful placement and dosing reduce the risk of an overly stiff or “frozen” appearance, while delivering results that are effective and long-lasting.
Is glabellar frown line treatment right for you?
Botulinum toxin treatment for glabellar frown lines is most suitable for individuals with dynamic frown lines, where lines appear during facial expression and soften when the face is relaxed. It may also benefit those with early static lines by helping slow further deepening over time.
A consultation is important to determine whether glabellar frown line treatment is appropriate for your facial anatomy, muscle activity and aesthetic goals. This approach is especially helpful for patients seeking subtle softening rather than complete loss of movement.
Aftercare and recovery following glabellar frown line treatment
Most patients can return to normal daily activities immediately after botulinum toxin treatment for glabellar frown lines. Mild redness, swelling or tenderness at the injection sites may occur but usually settles within a short period.
To support optimal results after glabellar frown line treatment, you may be advised to:
Avoid rubbing or massaging the treated area for the rest of the day
Remain upright for several hours after treatment
Avoid strenuous exercise, heat exposure, or alcohol on the day of treatment
Personalised aftercare advice will be provided based on your treatment plan.
What glabellar frown line treatment cannot do
While botulinum toxin is effective for softening glabellar frown lines caused by muscle movement, it has clear limitations. This treatment:
Does not remove excess skin or significantly tighten loose skin
Cannot fully erase deep, long-standing static frown lines on its own
Will not alter facial structure or replace surgical procedures
For deeply etched glabellar frown lines, combination treatments may sometimes be recommended. A personalised consultation helps set realistic expectations and ensures the most appropriate treatment plan.
Summary
Glabellar frown lines are a common concern that can give the face a tense or stern appearance, even at rest. When treated appropriately, botulinum toxin injections can soften these lines by targeting the underlying muscle activity, helping restore a more relaxed and refreshed look while preserving natural facial expression.
At APAX Medical & Aesthetic Clinic, glabellar frown line treatment is guided by careful assessment, detailed anatomical understanding and a personalised approach. Each treatment plan is tailored to the individual, taking into account muscle movement patterns, frown line type and aesthetic goals to achieve balanced, natural-looking results.
Book a consultation today to discuss glabellar frown line treatment with our medical team and receive a personalised plan designed around your facial anatomy and expectations.
Frequently Asked Questions About Glabellar Frown Line Treatment
In Singapore, the commonly approved botulinum toxin products used for glabellar frown line treatment include onabotulinumtoxinA, abobotulinumtoxinA, and incobotulinumtoxinA. All are botulinum toxin type A formulations used safely in aesthetic practice. These products have a similar mechanism of action and duration of effect, with differences mainly in formulation, dilution and dosing units. Units are not interchangeable between brands due to these differences.
Botulinum toxin treatment for glabellar frown lines is generally safe and well tolerated, with minimal downtime for most patients. The most common side effect is a mild, temporary headache that usually resolves with simple pain relief. Less commonly, eyelid drooping (ptosis) may occur in a small percentage of cases and is typically temporary. A thorough assessment and precise injection technique help minimise this risk.
The number of injection points for glabellar frown line treatment varies depending on muscle strength, contraction pattern, and individual facial anatomy. This is assessed during consultation. Most patients require between 3, 5 or 7 injection points to achieve balanced and natural-looking results.
The dose of botulinum toxin used for glabellar frown lines depends on factors such as muscle mass, anatomy, age and gender. Men often require higher doses due to stronger muscle activity. Typical doses vary by product, with commonly used ranges being approximately 20 units for onabotulinumtoxinA or incobotulinumtoxinA, and around 50 units for abobotulinumtoxinA.
Yes, glabellar frown line treatment can be safely combined with treatment of other facial areas during the same session. Commonly treated areas include crow’s feet and forehead lines. Treating multiple areas together can help achieve a more balanced and harmonious facial result.
Botulinum toxin treatment for glabellar frown lines can be combined with fillers, laser treatments or other energy-based devices, depending on skin condition, age and treatment goals. While botulinum toxin targets muscle activity, other treatments address volume loss, skin texture and overall facial ageing. A combined approach may be recommended after assessment.
Botulinum toxin treatment for glabellar frown lines may not be suitable for individuals with certain neuromuscular conditions, active infections at the injection site or known allergies to the product. It is also not recommended during pregnancy or breastfeeding or for those taking specific medications such as certain muscle relaxants or anticoagulants. Suitability is always assessed during consultation.
The cost of glabellar frown line treatment with botulinum toxin starts from $250 per visit, depending on the treatment plan and product used. A review is typically scheduled within two weeks and a complimentary touch-up may be performed if clinically indicated.
Schedule a consultation for glabellar frown line treatment in Singapore
Botulinum toxin injections is an exceptional procedure that offers incredible, lasting results, especially when offered by an experienced injector such as Dr. Ng. Offering a customized treatment for each patient, Dr. Ng combines multiple treatments, techniques, and products to help each patient meet their individual goals.
References:
Okazaki, S., Suzuki, M., & Duncan, K. K. (2025). The influence of repeated frowning and smiling on corrugator muscle activity and wrinkles between eyebrows. Scientific Reports, 15(1), 1467. https://doi.org/10.1038/s41598-024-84121-9
Cavallini, M., Dell’Avanzato, R., Fundarò, S. P., Urdiales-Gálvez, F., Papagni, M., Trocchi, G., Raichi, M., & Zazzaron, M. (2024). Treating glabellar lines with botulinum toxin: Does your patient need to frown steadily? Aesthetic Surgery Journal, 44(4), 421–427. https://doi.org/10.1093/asj/sjad349
Coban, I., Erkmen, F. Y., & Aktaş, G. D. (2025). Dynamic periocular wrinkle patterns: An anatomical study on young adults. Journal of Cosmetic Dermatology, 24(5), e70215. https://doi.org/10.1111/jocd.70215
Borba, A., Matayoshi, S., & Rodrigues, M. (2022). Avoiding complications on the upper face treatment with botulinum toxin: A practical guide. Aesthetic Plastic Surgery, 46(1), 385–394. https://doi.org/10.1007/s00266-021-02483-1
Kaufman-Janette, J., Cox, S. E., Dayan, S., & Joseph, J. (2021). Botulinum toxin type a for glabellar frown lines: What impact of higher doses on outcomes? Toxins, 13(7), 494. https://doi.org/10.3390/toxins13070494
Frown line treatment
Are you looking to refresh your appearance and reduce the signs of aging? Botulinum toxin treatment for frown lines offers a safe and effective solution. Often known as Botulinum toxin injections, this non-surgical procedure targets the deep creases between your eyebrows, providing a smoother, more youthful look.
Dr. Moses Ng
About Dr Moses Ng
MBBS (London) with distinction Dip Practical Dermatology (Cardiff) with distinction Member of American Acne & Rosacea Society Fellow of American Society for Laser Medicine & Surgery
Dr. Moses Ng is a distinguished professional in the field of aesthetic medicine, renowned for his expertise in advanced cosmetic procedures. With over 15 years of experience, extensive training and a keen eye for detail, Dr. Ng specializes in a wide range of treatments, including injectables, laser therapies, and acne scar management.
Dr. Moses Ng’s commitment to excellence and patient-centric approach have earned him a reputation as a trusted clinician in aesthetic medicine. His continuous pursuit of the latest advancements in the field ensures that his patients receive the highest standard of care and the most effective treatments available.
Please note: Patients are advised to consult a qualified medical professional to determine the right and suitable treatment option for their individual needs.
Get in touch with us with any questions, pricing, or bookings.
MBBS (UK) Postgraduate Diploma in Practical Dermatology (UK) Roxburg and Henry Silverman Prize in Dermatology (UK) Accreditations by Aesthetic Dermatology Educational Group
Delivering Services Built on Integrity, Empathy and Treatments Affordably Priced for Everyone.
This article has been medically reviewed by Dr. Moses Ng
Dr Ng’s main clinical interest lies in Acne & Acne Scar Management, Pigmentation Disorders, and Laser Surgery. He has helped more than 20,000 patients for the past 15 years.
More than just providing treatments and products, we constantly strive to deliver a service built on integrity, empathy and treatments affordably priced for everyone.
