Everyone, at some point, faces the reality of seeing their facial appearance change over time. One of the most noticeable age-related transformations is the gradual loss of facial volume. The once plump and firm face becomes flatter and less defined. This shift does not occur solely on the surface of the skin but involves complex changes across multiple anatomical layers. 

Anatomical understanding of facial volume loss

Facial volume is determined by a composite of bone, muscle, fat, and skin – all of which undergo aging-related changes. The most significant change involves the resorption of facial bones such as the zygomatic (cheek) bone and nasal bone, which play critical roles in defining facial structure. As these bones diminish, the face begins to lose its dimensionality and takes on a flatter appearance. These changes tend to occur earlier and more extensively than most people realize.

Fat redistribution

One of the most visually prominent signs of aging is the redistribution of facial fat. In youth, fat is evenly distributed throughout the face. However, as aging progresses, fat diminishes in some areas and accumulates in others, leading to imbalanced contours.

One of the most noticeable changes occurs in the infraorbital (under-eye) area. This region has the thinnest skin on the body and is particularly susceptible to loss of elasticity. As the supporting structures like the orbicularis oculi weaken, the orbital fat herniates forward, resulting in under-eye bulging. These symptoms are rarely seen in the 20s and 30s but become increasingly evident in the 40s and 50s.

This fat redistribution not only impacts aesthetics but also alters the overall facial impression. As mid-cheek fat descends, nasolabial folds deepen, and the jawline becomes less defined.

Bone resorption

Facial bones act like the scaffolding of a building. But unlike static structures, facial bones continuously undergo remodelling through resorption and regeneration throughout life. These skeletal changes have a profound effect on facial appearance.

The most pronounced bone resorption occurs in the inferior lateral and superior medial portions of the orbital rim. As a result, facial foramina and depressions enlarge, making the face appear flatter and less voluminous.

Women, in particular, are more affected due to having approximately 10–15% less peak bone mass compared to men. Following menopause, the dramatic decrease in oestrogen exacerbates bone loss, accelerating skeletal volume reduction.

Deep fat loss

One of the key contributors to facial volume is the deep fat compartments. The buccal fat pad, for example, is not just a superficial cheek structure but a deep, extensive fat compartment extending from behind the zygomatic arch to the lower cheeks beneath the facial muscles.

This deep fat pad lies beneath the masseter muscles used for chewing and extends toward the temporal fossa above and the medial mandibular angle below. Age-related atrophy of these deep fat layers significantly reduces facial volume.

Studies have shown that elderly individuals can lose up to 65% of their subcutaneous fat compared to younger adults. This loss not only affects facial fullness but also contributes to decreased skin elasticity.

Loss of skin elasticity

The skin consists of the stratum corneum, epidermis, dermis, and subcutaneous layers. With aging, the thickness of these layers decreases, leading to soft tissue atrophy and sagging. A primary cause is the decline in collagen, which constitutes approximately 80% of the dermal mass. This process, known as atrophic aging, results in visible skin laxity and volume loss.

Skin aging can be divided into two categories: intrinsic and extrinsic aging. Intrinsic aging is driven by factors such as hormonal changes, reactive oxygen species, and genetic instability – all of which reduce collagen production and accelerate dermal thinning.

Extrinsic aging, on the other hand, is primarily caused by photoaging due to UV exposure. UV radiation not only depletes collagen but also induces pigmentation. Melanocyte enzymatic activity declines by 8–20% per decade, making hyperpigmentation more likely with age.

Aesthetic approaches to volume restoration

While age-related volume loss is inevitable, advancements in modern aesthetic medicine provide effective solutions to mitigate these changes. Among them, skin booster treatments help restore hydration and elasticity deep within the dermis.

Correcting fat redistribution

One of the most effective treatments for infraorbital fat protrusion is under-eye fat repositioning. This procedure involves either partial removal or redistribution of herniated fat to create a smoother under-eye contour.

However, as skin elasticity continues to decline with age, the previously repositioned fat may again protrude. Therefore, any fat repositioning procedure should be combined with long-term skin tightening and maintenance strategies.

Dermal fillers are another powerful tool for instantly restoring lost volume. They naturally compensate for depleted areas and rejuvenate the facial appearance with a youthful vibrancy.

Addressing skeletal changes

Volume loss due to bone resorption can be corrected with dermal fillers or fat grafting. Enhancing structural regions such as the cheekbones or jawline helps restore facial dimensionality and symmetry.

Skin boosters that stimulate collagen synthesis can also restore internal dermal density and help counteract the flattening effects of skeletal remodelling.

Managing deep fat compartment atrophy

Loss of buccal fat significantly reduces facial volume. This can be corrected using autologous fat grafting or fillers. But surgical removal of buccal fat can lead to excessive hollowing and wrinkling if not performed judiciously.

Prominent nasolabial fat pads, which contribute to laugh lines, are not significantly improved by deep fat removal. In such cases, fat-dissolving injections offer a more targeted solution. These procedures selectively reduce unwanted fat while preserving necessary volume, achieving a more balanced facial contour.

Improving skin elasticity

To address atrophic aging, treatments that promote collagen synthesis – such as laser therapy or high-intensity focused ultrasound (HIFU) – are beneficial. These procedures stimulate natural collagen production and improve skin tightness.

Preventing extrinsic aging by applying sunscreen is also critical. When combined with routine skincare and professional treatments, these strategies can effectively prevent and reverse the loss of skin elasticity.

Botulinum toxin (Botox) injections help limit excessive facial muscle movement, preventing wrinkle formation and improving contour. When applied to the jawline and cheekbones, they can refine the overall facial outline.

Comprehensive facial volume management strategy

Facial volume loss is a result of multiple interacting factors, not a single cause. Therefore, addressing it requires a multifaceted strategy.

Changes such as fat redistribution, bone resorption, deep fat loss, and skin laxity collectively influence the face’s appearance and impact self-esteem and social perception.

Fortunately, advancements in modern aesthetic medicine offer numerous treatment options. Fillers, Botox, skin boosters, and fat-dissolving injections can work synergistically to restore youthful contours and maintain vitality.

The key is to understand your unique facial anatomy and aging pattern and to develop a personalized treatment plan accordingly. Consulting with a qualified expert will help you choose the most appropriate interventions to preserve natural, healthy beauty.

Primary causes of facial volume loss and recommended management

• Fat redistribution: Under-eye fat repositioning, dermal fillers
• Bone resorption: Fillers, fat grafting, collagen-stimulating procedures
• Deep fat loss: Fat grafting, fillers, fat-dissolving injections
• Loss of skin elasticity: Laser therapy, ultrasound (HIFU), skin boosters, daily sunscreen use
• Comprehensive management: Customised treatment combinations, regular professional care and monitoring

Adam Mulligan, a psychology graduate from the University of Hertfordshire, has a keen interest in the fields of mental health, wellness, and lifestyle.