The rise of GLP-1 weight-loss medications such as Ozempic, Wegovy and Mounjaro have transformed obesity treatment and helped millions achieve significant weight loss. However, alongside the health benefits, a new aesthetic concern has emerged. This has become known as ‘Ozempic face.’
I have noticed this phrase across headlines on both social media platforms and main news sites. The headlines usually accompany images of gaunt, hollow-cheeked faces.
However, ‘Ozempic face’, while widely linked to Ozempic, is not a side effect of the weight-loss medication itself. It’s actually the result of rapid weight loss. Anyone losing weight rapidly through any means can potentially develop the distinct facial condition.
What happens is that when weight is lost, facial fat also diminishes. As a result, the face may appear older, more hollow or less defined. This is particularly evident in the cheeks, temples and jawline.
Hyaluronic acid dermal fillers have traditionally been used to restore lost facial volume caused by dramatic weight loss. However, a newer category of hybrid injectable treatments is attracting attention. One of these goes by the name of HarmonyCA. This treatment combines immediate volume restoration with collagen stimulation, and many patients are asking whether it offers a better solution for weight-loss-related facial ageing than more traditional methods.
We thought we’d explore the benefits of the treatment but thought it was best to first understand why rapid weight loss changes the face.
The face naturally contains several fat compartments which provide youthful contours and soft transitions between facial features. When significant weight is lost over a relatively short period, these fat pads often shrink.
Unlike gradual ageing, where changes occur over many years, rapid weight loss can produce noticeable facial changes within months. Patients frequently describe looking tired despite feeling healthier than ever.
Common features of ‘Ozempic face’ include hollow cheeks, flatter mid-face contours, more prominent nasolabial folds, increased jowling, deeper shadows beneath the eyes and a loss of definition along the jawline. In some cases, reduced skin elasticity also becomes more apparent as the skin adjusts to its new underlying volume.
The extent of these changes varies widely. Younger patients with good skin elasticity may notice only subtle hollowness, while older individuals or those who have lost a large amount of weight may experience more pronounced volume loss and skin laxity.
So how does HarmonyCA fit into the picture?
HarmonyCA is often described as a hybrid injectable because it combines two established ingredients within a single treatment. The first is hyaluronic acid (HA), which provides an immediate lifting and volumising effect. The second is calcium hydroxyapatite (CaHA), a bio-stimulatory ingredient which encourages the skin to produce new collagen over time. According to professionals from 111 Harley Street Clinic in London, which offers the treatment: “”One of the best things about HArmonyCa is that it provides a dual-effect – one that provides an immediate lift from the hyaluronic acid (HA) it contains and then an additional sustained result – from the lasting collagen stimulation thanks to its other component, calcium hydroxyapatite (CaHA).”
This dual-action approach distinguishes HarmonyCA from conventional fillers which primarily replace lost volume. While patients often notice an immediate improvement after treatment thanks to the HA component, the collagen-stimulating properties of CaHA continue working over the following months, gradually improving skin firmness and support.
For patients who have lost facial volume after rapid weight loss, this combination may be particularly appealing because it addresses not only the missing volume but also some of the changes in skin quality which can accompany significant weight reduction.
Experts advise that the timing of receiving the treatment is important. Most aesthetic practitioners recommend waiting until body weight has stabilised before embarking on significant facial rejuvenation. If a patient continues losing weight after injectable treatment, additional facial fat loss may alter the final result, making further treatment necessary.
Once weight has plateaued, HarmonyCA may be considered for individuals experiencing mild to moderate facial volume loss, early skin laxity and reduced facial definition.
However, not everyone is an ideal candidate. Patients with severe skin laxity, extensive sagging or very advanced facial ageing may require a combination of treatments, or even surgery, to achieve their desired outcome.
For this reason, a comprehensive facial assessment remains essential before any treatment plan is developed.
Which Facial Areas Respond Best?
HarmonyCA is generally used to restore structural support rather than simply filling isolated wrinkles. Patients affected by weight-loss-related facial changes often benefit most from treatment in the mid-face, where restoring cheek volume can indirectly soften surrounding folds and improve overall facial balance.
The lateral cheeks are another common treatment area because they help recreate youthful facial contours while providing subtle lifting of the lower face.
In carefully selected patients, the jawline may also benefit from improved definition, particularly when mild jowl formation has developed following weight loss.
HarmonyCA is not typically used in the lips or tear troughs, where other injectable products may be more appropriate.
In many cases, combination therapy produces the most balanced results. Energy-based treatments such as radiofrequency microneedling, ultrasound skin tightening or laser resurfacing are frequently used alongside injectable treatments because they address different aspects of facial ageing.
While HarmonyCA helps restore support beneath the skin, skin-tightening procedures stimulate additional collagen within the dermis, improving firmness and elasticity.
The sequencing of treatments depends on the patient’s needs. Some practitioners prefer to perform skin tightening before injectable treatment, while others stage procedures several weeks apart to allow adequate healing and more accurately assess results.
Patients with significant skin laxity after major weight loss often achieve the best outcomes through carefully planned combination protocols rather than relying on a single treatment.
Despite growing enthusiasm surrounding hybrid injectables, HarmonyCA should not be viewed as a replacement for surgery in patients with extensive skin laxity. Similarly, patients hoping to recreate the fullness they had before weight loss may require more than one treatment session or additional therapies to achieve their goals.
The objective is not to reverse every visible change but to restore harmony, improve facial support and enhance skin quality while preserving natural facial movement and expression.
