HYALURONIC ACID FOR
THE JAWLINE

Dernière mise à jour : 26 June 2026

Why does the jawline sometimes lack definition ?

Jawline definition is closely linked to several anatomical elements : mandibular bone structure, chin projection, fat tissue position, skin density and skin tension. When one is insufficient, the jawline may look blurred, less structured and less defined.
In some younger patients, this lack of definition results from naturally subtle anatomy : a less prominent mandible, a small chin, an indistinct mandibular angle or an unclear transition between face and neck. This is an anatomical characteristic rather than sagging.
In mature patients, definition gradually decreases with ageing. Bone resorption, fat loss, tissue sagging and skin thinning change the shape of the lower third of the face. The jawline rounds, jowls become visible and the mandibular line loses sharpness. In both cases, hyaluronic acid injections adapted to each face’s anatomy improve jawline definition, either creating previously absent structure or restoring lost structure.

Session duration
Around 15 to 45 minutes, depending on the areas
Number of sessions
1 initial session; touch-up if necessary
Time to results
Immediate; assessed once swelling has subsided
Usual after-effects
Swelling and bruising may last a few days
Duration of effects
Around 6 to 24 months, depending on the gel and area
Price
CHF 600 per syringe
Contents
  1. A well-defined jawline
  2. Hyaluronic acid injections in younger patients
  3. Hyaluronic acid injections in more mature patients
  4. Skinboosters : restoring skin density for a tightening effect
  5. The influence of social media on the search for a better-defined jawline
  6. Hyaluronic acid for the jawline : prices

A well-defined jawline

The mandibular line plays a central role in facial harmony, defining the architecture of the lower third of the face and the transition from the middle to lower third. A well-defined jawline has a clear but natural separation between cheek, jaw and neck, without abrupt breaks or excessive volume.
Aesthetic criteria differ between faces.
In women, soft definition is preferred, with slightly rounded contours and a continuous line to the chin, without harshness or pronounced angles.
In men, a stronger mandibular angle, straighter line and slightly projected chin base may emphasise masculine character
Beyond gender, one principle remains constant : balanced proportions, the principle of Beautiphication. A chin correctly positioned on the vertical facial axis helps harmonise the whole face, both frontally and in profile.
A well-defined jawline enhances the overall face through harmony and balance rather than drawing attention through volume.

Hyaluronic acid injections in younger patients

In younger patients, hyaluronic acid creates or accentuates a naturally indistinct jawline. This is sometimes called jawline contouring, but the medical approach must remain measured and anatomically consistent. The aim is to adapt to facial features, respecting proportions and identity rather than imposing a standard shape.
A dense hyaluronic acid is injected deeply against bone. This product has strong projection capacity and high resistance to compression. It supplements missing natural mandibular structure. Injections may also target the mandibular angle, a key area separating face and neck.
When the chin is small or insufficiently projected, support is also added there. Simply improving projection can transform overall jawline balance and correct slight asymmetries. The desired result is a sharper, more balanced contour without excess volume or artificial angularity. The change should be noticeable but subtle, visible but natural.

Hyaluronic acid injections in more mature patients

In mature patients, the aim is different. It restores a structure gradually altered by time rather than creating one. With ageing, the mandible loses bone density, fat tissues move downwards, supporting ligaments loosen and skin loses elasticity. The jawline blurs, contours round and the face–neck transition fades. Hyaluronic acid injections around the jawline replace this lost support.
Structural injections use firm hyaluronic acid placed deeply against bone. They restore natural support gradually lost through ageing rather than create a new shape. Restoring support re-establishes natural tissue tension and redefines the jawline without artificiality. Treatment always respects facial dynamics, avoids excessive volume and prioritises anatomical consistency.

Hyaluronic acid for the jawline

Skinboosters : restoring skin density for a tightening effect

Alongside lost bone support, skin ageing plays a major role in reduced jawline definition. When skin thins, loosens or loses density, even good deep structure cannot maintain lower facial tension. Skinbooster-type hyaluronic acid is an appropriate response.
Injected into the dermis, this hyaluronic acid strengthens intrinsic skin quality rather than creating volume. Its hydrating and biostimulating properties stimulate collagen and elastin synthesis, increase skin matrix density and gradually restore skin thickness and firmness. Skin naturally tightens, contours become sharper and the jawline gains definition without volume changes. This dermal thickening produces gradual, entirely natural tightening. Combined with deep structural injections, skin injections provide complementary action : deep treatment restores support while superficial treatment improves skin quality and tension.
This synergy produces comprehensive, consistent and lasting rejuvenation that respects the patient’s features and expression.

The influence of social media on the search for a better-defined jawline

Social media has strongly influenced evolving aesthetic standards. Images of perfectly structured profiles, prominent mandibular angles and sharp facial contours have popularised a defined jawline among women and men. Digital filters, directly lit portraits and three-quarter views have reinforced this awareness.
However, requests expressed during consultation do not aim to reproduce artificial visual effects. Patients today seek measured, elegant, subtle results far from caricature. Current techniques meet this expectation rationally by enhancing natural facial structure without transforming it. Hyaluronic acid reveals existing features rather than reproducing screen images.

Hyaluronic acid for the jawline : prices

Jawline treatment with hyaluronic acid or Skinbooster injections always requires an initial consultation. Dr Romano performs a detailed facial assessment, evaluating mandibular structure, chin projection, skin thickness and tissue quality to determine the most appropriate technique : deep structural injections or superficial dermal densification. Cost depends on the amount of product needed and type of hyaluronic acid used. A syringe of structural hyaluronic acid to reshape or restore the jawline costs 600 CHF, while a syringe of Skinbooster injected into the dermis to improve skin density and reinforce tightening costs 400 CHF. A personalised quotation is provided after consultation.
This document represents a genuinely tailored treatment plan designed to respect each patient’s anatomy and meet specific aesthetic goals.

WHAT THE STUDIES SAY
01

In a randomised trial, hyaluronic acid injections improved jawline definition more than no treatment. At six months, nearly 89% of treated patients considered the result improved or much improved. These results concern VYC-25L gel and the patients selected for the study.

Source: Safe and Effective Restoration of Jawline Definition With Hyaluronic Acid Injectable Gel VYC-25L: Results From a Randomized Controlled Study — Alexander Rivkin, Jeremy B Green, Suzanne Bruce et al. Aesthetic surgery journal, 2024

02

Thirty patients were followed for one year after hyaluronic acid injections along the jawline. The measured volume gradually decreased, but the improvement in definition remained visible at twelve months and patients reported being satisfied. This follow-up shows that the aesthetic result can persist even as the volume provided by the injections begins to diminish.

Source: Longevity and subject-reported satisfaction after minimally invasive jawline contouring — Daniel Müller, Valentina Prinz, Monika Sulovsky et al. Journal of cosmetic dermatology, 2022

03

A synthesis of five studies, including two randomised trials, reports improved jawline definition with VYC-25L hyaluronic acid gel. These results support its use in redefining the jawline without surgery. Local reactions, particularly swelling and tenderness in the injected area, were common. They should be explained to the patient before treatment.

Source: Safe and effective restoration of jawline definition with hyaluronic acid injectable gel: a systematic review and meta-analysis — Amir Hashemloo, Maryam Milanifard. Acta dermatovenerologica Alpina, Pannonica, et Adriatica, 2026

Frequently asked questions about hyaluronic acid for the jawline

What does hyaluronic acid do for the jawline ?

Hyaluronic acid reshapes and rejuvenates the jawline by restoring lost volume, improving skin tension and redefining the mandibular line. It corrects jowls, softens pronounced folds and restores lower facial harmony.

What are the signs of a sagging jawline ?

The main signs include : developing jowls, sagging jaw contours, lost chin definition, pronounced marionette lines and nasolabial folds, and a less structured, less dynamic face.

Which type of hyaluronic acid is used for the jawline ?

Volumising, structural hyaluronic acid specifically formulated to support, redefine and sculpt facial contours is used. It is absorbable, biocompatible and suited to facial reshaping.

Do injections provide a natural result ?

Yes, when performed by an experienced doctor, results are natural, harmonious and adapted to the patient’s facial anatomy. The aim is enhancement without transformation.

Does treatment hurt ?

Injections are generally well tolerated. Products contain local anaesthetic (lidocaine), and anaesthetic cream may be applied for extra comfort. The session is quick and almost painless.

How long does a session last ?

A session lasts between 30 and 45 minutes, including facial assessment, the personalised treatment plan and injections.

How soon are results visible ?

Results are visible immediately after the session. The face looks more defined, firmer and more harmonious. The final result stabilises after 2 to 3 weeks.

How long do the effects last ?

Effects last between 12 and 18 months on average. Annual maintenance may be offered according to the patient’s profile and skin laxity.

Are there side effects or contraindications ?

Side effects are minimal : temporary redness, mild swelling or bruising. Treatment is contraindicated during pregnancy and in cases of skin infection or active autoimmune disease.

Can hyaluronic acid be combined with other treatments ?

Yes, for a more comprehensive result, hyaluronic acid may be combined with Radiesse or botulinum toxin injections, lifting threads or radiofrequency to enhance definition and firming.

What is the price of jawline reshaping with hyaluronic acid ?

The price depends on the number of syringes required, the degree of sagging and the treatment plan. A quotation is prepared during a personalised consultation.