Taula de Continguts
- What non-surgical facial masculinisation means
- Chin, jaw, cheekbones and profile: what each area contributes
- Hyaluronic acid, biostimulators and HIFU: the role of each
- Neuromodulators and the masseter: when they fit and when they do not
- Limits of the non-surgical approach and side effects
- How we work at Santé Madrid
- Frequently asked questions
Non-surgical facial masculinisation means using aesthetic medicine treatments, mainly hyaluronic-acid fillers, to give more definition or projection to areas such as the chin, the jawline or the cheekbones without an operation. It does not change the bone structure or replace surgery: it works on contour, volume and tissue quality, and its results are temporary and vary from one person to another. At Santé Madrid we do not perform surgery; in this guide we explain which areas are usually treated, what role each option in the catalogue can play, what limits this approach has and which side effects are worth knowing before you decide.
Key points
- Masculinising without surgery means refining features such as the chin, the jaw angle, the cheekbones and the profile, not changing the face entirely.
- Hyaluronic acid is the main tool for adding projection and definition; biostimulators and HIFU play a supporting role.
- Relaxing the masseter with botulinum toxin tends to narrow the lower face, so it is not a tool for sharpening the jaw.
- The most common side effects of fillers are mild and short-lived, but there are rare and serious complications that call for a medical assessment beforehand.
- Results vary from person to person and every treatment is carried out by the medical team after an assessment.
What non-surgical facial masculinisation means
When people talk about masculinising a face without surgery, they mean reinforcing some features that are often associated with a masculine appearance: a chin with more projection, a crisper jawline, a defined jaw angle and cheekbones with support but without rounded volume. There is no single standard. A clinical trial on jawline definition notes that the contour of the jaw plays a role in gender- and culture-related ideals of beauty, and that preferences range from a wide, square jaw to a softer but defined curve (Rivkin and colleagues, 2024).
A review on the masseter muscle describes the aesthetics of the lower third as depending mainly on three factors: the size of the jaw bone, the mass of the masseter and the volume of subcutaneous fat. It adds that a wide, square lower face is considered by many people to be more attractive in men (review on botulinum toxin and the masseter, 2025). This helps explain what aesthetic medicine can do: the bone is not modified, but the volume over it and the quality of the skin covering it can be worked on. The aim is for your face to still look like yours, with some features more defined.
Chin, jaw, cheekbones and profile: what each area contributes
Masculinisation is rarely planned around a single area. The medical team looks at the face from the front and in profile, at rest and while speaking, and assesses how the chin, the jaw and the midface relate to one another. Sometimes the most visible change comes from projecting the chin slightly; at other times, from defining the jaw border or the angle. The Santé Madrid catalogue includes hyaluronic-acid fillers for the chin, the jawline, the cheeks and the temples, as well as rhinomodelling, which can influence the profile. This table gives an indicative summary of the role of each area; the final recommendation is always decided in consultation.
| Area | What it can contribute | Catalogue option that may be considered | Main limit |
|---|---|---|---|
| Chin | More projection and a more balanced profile | Hyaluronic-acid chin filler | It does not correct bite problems or the position of the bone |
| Jawline and angle | A crisper border and a more defined angle | Hyaluronic-acid jawline filler | It does not widen the bone; the volume is temporary |
| Cheekbones | Support for the midface without rounding the face | Hyaluronic-acid cheek filler | Too much volume can feminise the feature |
| Contour and double chin | May improve the appearance of laxity along the jaw border | HIFU with Ultraformer MPT in the double-chin area | It does not add volume or projection |
| Nasal profile | A more harmonious profile in some cases | Rhinomodelling with hyaluronic acid | It does not reduce the nose or replace surgery |
If you are looking for an overall approach, Santé Madrid also offers male facial harmonisation protocols for a young face and for a mature face, which are likewise assessed in consultation.
Hyaluronic acid, biostimulators and HIFU: the role of each
Hyaluronic acid. It is usually the main option when projection or definition is the goal. A randomised, evaluator-blinded trial of a hyaluronic-acid gel for jawline definition observed an improvement in definition compared with the control group during follow-up, and most injection-site reactions were mild or moderate and transient (Rivkin and colleagues, 2024). It should be read with caution: the participants were mostly women who had lost definition with age, so it does not exactly describe a man looking for a more defined feature.
Biostimulators. The catalogue includes Sculptra, Radiesse and Lanluma. They tend to be considered less for sculpting and more for improving support and skin quality. A systematic review of combining hyaluronic acid with calcium hydroxylapatite describes that this combination stimulates collagen synthesis and adds volume, although the evidence is heterogeneous and satisfaction tended to decline after a few months (systematic review of HA and CaHA, 2025).
HIFU. At Santé Madrid we work with the Ultraformer MPT (Classys). The manufacturer explains that it focuses ultrasound into thermal coagulation points at different depths to stimulate collagen, and directs it at skin laxity and loss of firmness (Classys, Ultraformer MPT). A study with this device used a 3D scanner to measure contour changes in areas such as the jaw and the neck immediately after treatment; it had no control group and the measurement was immediate, so it cannot predict each person's result (Kim, 2024). You can see how we approach it on the HIFU page.
Neuromodulators and the masseter: when they fit and when they do not
It is common to think that botulinum toxin can sharpen the jaw, but in the masseter the opposite usually happens. The review cited above explains that relaxing this muscle reduces its volume, and that the most common cosmetic complaint that leads people to treat it is precisely a square face they want to slim (review on botulinum toxin and the masseter, 2025). If your goal is a more defined jaw angle, treating the masseter may work in the opposite direction.
In the Santé Madrid catalogue, neuromodulators are used for expression lines and also for bruxism, among other indications. If you clench or grind your teeth, bruxism treatment is considered after a medical assessment and only if indicated, and the medical team will explain how it may affect your contour. It is a prescription medicine: we do not discuss doses or brands, and its effect is temporary. The same review lists possible side effects such as pain at the site, temporary muscle weakness, asymmetry, bruising, headache, changes in chewing and a sunken appearance of the cheeks. Contraindications and precautions include certain neuromuscular diseases, such as myasthenia gravis (MedlinePlus, botulinum toxin), which is why your medical history is reviewed before any recommendation.
Limits of the non-surgical approach and side effects
Aesthetic medicine can refine features, but it has clear limits. It does not modify the bone, it does not correct bite problems and it does not permanently change the proportions of the face. Hyaluronic acid is reabsorbed over time, so the result is temporary and needs maintenance if you want to keep it. Adding volume also has a ceiling: beyond a certain point the face can look heavy or artificial, and an overcorrected chin or jaw is more noticeable than a feature with little definition. That is why, when the change you are looking for is only possible by working on the bone, the honest answer is that aesthetic medicine is not the right route, and Santé does not perform surgery.
On safety, a review of adverse events from fillers explains that most are mild and short-lived, such as bruising and swelling, and that redness, lumps, asymmetry, infection or hypersensitivity reactions can also occur. Serious events are rare, among them vascular compromise from injection into a vessel, which in rare cases can affect vision. The same review notes that many are avoidable with good planning, knowledge of anatomy and technique, and that hyaluronidase is used in some hyaluronic-acid complications (Funt and Pavicic, 2013).
In all of these cases, mention it in your consultation. The medical team will decide whether to postpone the treatment, adapt it or advise against it.
How we work at Santé Madrid
Santé Clinics Madrid is at C. de Amador de los Ríos, 1, Chamberí, 28010 Madrid. We are open Monday to Friday from 9:00 to 21:00 and on Saturdays from 10:00 to 15:00; the clinic is closed on Sundays.
You can start with a free aesthetic consultation with a Beauty Coach, where we talk about what you would like to change and what you prefer to keep. Because fillers and neuromodulators are medical treatments, the recommendation is made in a medical consultation, which costs €50. In it, the Santé Madrid medical team reviews your medical history, analyses your face from the front and in profile, and explains which areas would make sense to treat, which would not and what you can realistically expect.
A gradual approach is usually proposed: treating first the area that contributes most to the whole and assessing the result before adding more. We explain the possible side effects, the care for the following days and when to contact the clinic if you notice something you did not expect. Results vary from person to person and are not presented as a promise.
Frequently asked questions
Can the face be masculinised without surgery?
Some features can be refined, such as chin projection or jaw definition, with hyaluronic-acid fillers and other medical treatments. The bone is not modified and the result is temporary; results vary from person to person.
Which areas are treated most often?
The chin, the jawline and its angle, the cheekbones and, in some cases, the nasal profile are usually assessed. The medical team decides in consultation which areas make sense for your face and in what order.
Can botulinum toxin sharpen the jaw?
Generally not. Relaxing the masseter tends to reduce its volume and slim the lower face. Neuromodulators may be considered for bruxism, after a medical assessment and only if indicated.
How long does a hyaluronic-acid result last?
Hyaluronic acid is reabsorbed over time, so the effect is temporary. How long it lasts varies with the area, the product and the person, and the medical team explains in consultation what maintenance may be needed.
What side effects can it have?
The most common are bruising, swelling and discomfort in the area, which are usually short-lived. There are rare and serious complications, such as vascular compromise, which is why treatment always follows a medical assessment.
Can HIFU define the jaw?
HIFU with the Ultraformer MPT is aimed at skin laxity and firmness, for example in the double-chin area. It does not add volume or projection, so it does not replace a filler when the goal is a more defined feature.
How much does the first consultation cost?
The aesthetic consultation with a Beauty Coach is free. The medical consultation, where the suitability of fillers or neuromodulators is assessed, costs €50.
If you are thinking about defining a feature of your face, the first step is a calm assessment at Santé Madrid. We will tell you what aesthetic medicine can offer in your case, what it cannot do and which options make sense for you.
