November 27, 2025
When we think of a youthful face, it’s not just about smooth skin or a sharp jawline. What gives the face its vitality and “fresh” look is the way fat, muscle and skin interact to create natural contours. Slimming treatments, if not carefully planned, can disrupt this delicate balance, leading to a hollow look.
Facial fat is often misunderstood as something to get rid of. It, however, actually plays a critical role in supporting the skin and shaping the face. These fat areas are like natural cushions that provide softness and structure:
| Fat Area | Location | Function | What Happens When It Shrinks? |
|---|---|---|---|
| Malar fat | Over the cheekbones | Provides lift and rounded cheeks | Cheeks flatten, smile lines deepen |
| Buccal fat | Inner cheek | Keeps central face full | Hollow, gaunt appearance |
| Submalar fat | Below the cheek | Supports lower midface | Sunken, tired look, prominent lines at corners of mouth |
When these areas of fat shrink due to ageing or weight loss the jawline may look slimmer but the midface can appear deflated.
Overly aggressive slimming treatments and lack of individualized treatment plans can also lead to unwanted fat loss from these areas. Hence, it is important to seek treatment from experienced doctors who will be able to assess your facial structure and use appropriate settings to deliver good and safe results.
Volume isn’t only about fat but also depends on the muscles and skin that cover the facial skeleton.
These are targeted by botulinum toxin to slim the jawline. If treated too aggressively, though, the cheekbones can look more prominent which cast shadows that accentuate the hollowness.
Skin that is rich in collagen and elastin will naturally bounce back after slimming. But when collagen is depleted whether from ageing, sun exposure or genetics, the skin becomes thinner and less elastic. Instead of sitting smoothly over the face, it sags and clings, worsening the look of hollowness. That is why the “hollowness” tends to be more prominent in older patients, as the skin lacks the ability to contract after treatment.
From our mid-20s, collagen, bone density and fat volume start to decline. Slimming doesn’t cause ageing but it can unmask it by removing what little support remains. This is why older patients may seem more sunken if slimming isn’t balanced with volume restoration.
Instead of a youthful V-shape, the midface may appear sunken and the jawline overly sharp. That’s why treatment plans for Asian patients should focus on achieving balance whilst enhancing definition and preserving natural facial softness and support.
If these signs appear, it’s worth reviewing your treatment plan with your doctor before continuing further sessions.
A slimmer face does not have to mean a hollow face. The key lies in a careful, customized approach where slimming treatments are balanced with strategies that preserve or restore volume.
The best way to deal with hollowing is to prevent it before it starts. Here are some steps that we take to prevent this:
| Prevention Strategy | Treatment Modifications |
|---|---|
| Can Cold Water Close Pores? |
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| Staged approach |
|
| Combination therapies for balance |
|
If hollowing has already developed, non-surgical treatments can restore fullness and vitality while maintaining a slim contour. Options include:
| Treatment Option | Benefits |
|---|---|
Restore lost volume in areas like the cheeks, temples, or under-eyes. Fillers also provide a lifting effect when placed strategically. | Cheek fillers correct hollowness and lift surrounding tissues, giving a fresher, more rested look. |
Biostimulators Stimulate the body’s natural collagen production for gradual, long-lasting improvements in skin thickness and volume. | Injecting collagen stimulating products to build natural collagen over weeks to months, gradually adding volume to hollowed areas |
skin boosters Deeply hydrate and rejuvenate the skin from within with added plumping effect. | Injecting skin boosters such as Microdroplet HA Skinbooster or Skin Remodeling HA Booster to help improve skin quality and generalize skin plumping |
| Patient Profile | Recommended Treatment | Supportive Treatment | Clinical Rationale |
|---|---|---|---|
| 20s to Early 30s (Younger Skin, Good Collagen Reserves) | Botulinum toxin for masseter slimming, HIFU for anti-aging and targeted contouring | Mild cheek or chin filler (if needed), skin boosters for hydration | Younger patients have strong collagen and natural volume. Focus on subtle slimming and skin quality maintenance. |
| Mid 30s to 40s (Early Volume Loss) | HIFU or RF microneedling for lifting and tightening | Biostimulator (e.g., collagen stimulator) to rebuild structure, fillers for cheek or temple support | Collagen and fat loss begin; slimming alone can exaggerate hollowness. Combine lifting and collagen support for balance. |
| 40s and Above (Visible Sagging or Volume Loss) | Gentle contouring (targeted HIFU), Filler for midface and temples, biostimulators | Botulinum toxin to help with fine lines | At this stage, volume loss dominates; slimming must be conservative and always paired with volume replacement. |
Conclusion
If your face looks hollow after slimming treatments, there’s usually no need for concern. In most cases, these changes can be improved or reversed with a tailored treatment plan. A thoughtful, well-balanced approach looks at the face as a dynamic whole – where skin, muscles, and fat work together. By combining slimming treatments with therapies that restore hydration, rebuild collagen, and support natural contours, you can achieve a sculpted yet refreshed look that remains soft, youthful and uniquely you.
Medically Reviewed by
AESTHETIC DOCTOR
Dr. Marcus earned his Bachelor of Medicine and Bachelor of Surgery (MBBS) from Newcastle University in the United Kingdom. His early medical training included rigorous rotations across multiple specialties in both the UK and Singapore, providing him with a strong foundation in patient care and clinical excellence…
Whether you have questions about our treatments, want to book an appointment, or simply like to learn more about how we can help you achieve your skin goals, our team is here to assist!
Astria Medical Aesthetics believes in a sustainable aesthetic journey. Beauty can be a continuous, timeless goal.
51 Bras Basah Road, #04-06A
Lazada One, Singapore 189554
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(Last appointment: 7.30pm)
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(Last appointment: 6pm)
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