Cosmoplastic Digest

3 February 2025

This week’s 3-minute digest explores the anatomy of facial fat pads and their role in facial ageing, volume loss, and contour restoration.

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Deep vs. Superficial Fat Pads: Why It Matters

• Anatomical Insight: The face contains two distinct layers of fat pads—each playing a crucial role in volume distribution and facial aesthetics.
  • Superficial fat pads (e.g., nasolabial, lateral cheek, malar, and prezygomatic fat) sit above the SMAS (superficial muscular aponeurotic system). They provide soft tissue fullness and contour but are prone to sagging with age.
  • Deep fat pads (e.g., deep medial cheek fat, suborbicularis oculi fat [SOOF], and deep temporal fat) lie beneath the SMAS, serving as structural support pillars for the overlying tissues.
• Why It Matters: Facial aging does not occur uniformly across all fat pads. Superficial fat pads experience descent and redistribution, while deep fat pads atrophy and shrink, leading to volume loss, hollowing, and contour changes.

Quick Tip: When performing fillers or fat grafting, restoring deep fat first re-establishes facial support. Superficial filler placement should be used to refine contours, not replace deep structural volume.

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How Facial Fat Pads Change with Age

• Aging Effects on Fat Compartments:
  • The deep medial cheek fat pad atrophies early, leading to midface volume loss and deeper nasolabial folds.
  • The SOOF and lateral cheek fat descend, contributing to tear trough hollowing and jowling.
  • The temporal fat pad shrinks, causing lateral brow descent and temple hollowing.
• Why It Matters: Many practitioners mistakenly treat the symptom instead of the cause—for example, adding filler to nasolabial folds without addressing cheek fat pad atrophy, which results in a heavy, unnatural appearance.

Pro Insight: Treating volume loss at its source—by targeting the deep medial cheek and lateral fat compartments—creates more natural, youthful contouring compared to simply filling nasolabial folds.

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How to Target the Right Fat Pads for Optimal Results

• Injection Strategy for Fillers:
  1. Midface Lifting: Restore volume in the deep medial cheek fat and SOOF for lifting the midface and reducing nasolabial fold depth.
  2. Cheek Contouring: Inject along the lateral cheek fat pad to enhance definition without adding excessive bulk.
  3. Tear Trough Rejuvenation: Place filler in the deep infraorbital plane (between the orbicularis muscle and periosteum) to avoid the Tyndall effect.
  4. Temple Hollowing: Use a cannula to restore volume in the deep temporal fat pad while avoiding major vascular structures.
• Why It Matters: Filler placement in the wrong fat compartments can exacerbate aging signs rather than correct them. Overfilling superficial fat pads without deep support leads to ballooning or unnatural swelling.

Quick Tip: Always assess facial aging in multiple planes—frontal, lateral, and oblique—to determine the most effective injection strategy for each patient.

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The Role of Fat Grafting in Facial Rejuvenation

• Why Consider Fat Grafting? Unlike HA fillers, autologous fat grafting provides long-term volume restoration and integrates naturally into the surrounding tissue.

• Best Areas for Fat Grafting:
  • Deep medial cheek and SOOF for restoring midface support.
  • Temporal fat to soften hollowed temples and restore lateral brow positioning.
  • Jawline and pre-jowl sulcus for defining lower facial contours.
• Key Considerations: Fat graft survival rates vary based on injection technique, patient vascularization, and graft handling. Overfilling increases the risk of fat necrosis and poor integration.

Pro Insight: When performing facelift surgery, combining deep plane lifting with fat grafting in key areas enhances structural rejuvenation without over-reliance on fillers post-operatively.

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Avoiding Common Mistakes in Fat Pad Treatments

• Common Pitfalls:
  • Overfilling superficial fat pads results in an overly round, unnatural face.
  • Injecting too superficially in tear troughs increases the risk of the Tyndall effect and puffiness.
  • Treating nasolabial folds without restoring deep medial cheek volume fails to address the root cause of aging.
• How to Optimize Treatment:
  1. Combine deep and superficial injections for layered, natural rejuvenation.
  2. In surgical cases, integrate fat grafting with SMAS repositioning to enhance lift and contour definition.
  3. Choose the right filler rheology—firmer fillers for deep compartments, softer fillers for fine contouring.

Pro Tip: Always use a microcannula in high-risk vascular zones to minimize trauma, bruising, and complications.

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Mastering facial fat pad anatomy is essential for achieving natural, balanced results in both surgical and non-surgical treatments. By understanding how deep and superficial compartments interact with aging, you can strategically restore volume where it matters most.

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