The procedure most Western surgeons don\'t offer
Patients with naturally flat foreheads, depressions on the forehead, or asymmetric forehead contour have limited options at Western plastic surgery centers. The procedure available — forehead fat grafting — has variable retention and requires multiple sessions. Korean cosmetic surgery offers an alternative: forehead augmentation using methyl methacrylate (MMA) bone cement, a permanent implant material widely used in orthopedics and oral surgery.
The MMA forehead implant procedure was pioneered in Korea and remains relatively rare outside Korean surgical centers. Over a 13-year period at major Korean clinics, 516 patients underwent the procedure with documented satisfactory outcomes. For patients with significant forehead concerns, the MMA approach delivers permanent improvement that fat grafting cannot reliably achieve.
What MMA implant material is
Methyl methacrylate (MMA) is a polymer used widely in medicine:
- Bone cement in joint replacement surgery (decades of orthopedic use)
- Cranioplasty for skull defects (neurosurgical use)
- Dental prosthetics
- Reconstructive surgery applications
The material has key properties making it suitable for forehead augmentation:
- Forms a hard, stable shape once cured
- Can be precisely shaped during surgery
- Lower infection risk than silicone in this anatomic region
- Lower rejection rate than synthetic alternatives
- Biocompatibility well-established
MMA vs silicone for forehead augmentation
MMA advantages
- Permanent without migration concerns
- Shaped intraoperatively to exact contour
- Bonds to underlying bone
- Lower infection rate in long-term followup
- Customizable per patient anatomy
Silicone disadvantages for forehead specifically
- Pre-formed implants don\'t match individual anatomy precisely
- Capsular contracture risk over years
- Migration potential
- Visible edges in thin skin
- Higher revision rate
The Korean MMA implant procedure
Pre-surgical preparation
- 3D facial imaging to map forehead contour and target shape
- Plaster cast taken 1–2 weeks before surgery to design implant
- Custom silicone prosthesis OR template for intraoperative MMA shaping
- Pre-surgical labs and clearance
Surgical procedure
- General anesthesia
- Hairline incision (typically coronal — across top of scalp)
- Forehead skin reflected forward
- Periosteum (bone covering) elevated to expose forehead bone
- MMA material mixed and applied to desired contour
- Material shaped while in malleable phase
- Cooling to allow material to cure and harden
- Final contour refinement
- Skin redrape and incision closure
- Total procedure: 2–4 hours
Hospital stay and recovery
- Hospital stay: 1–2 nights
- Compression dressing for first week
- Significant facial swelling for 1–2 weeks
- Return to office work: 2–3 weeks
- Most swelling resolved: 4–6 weeks
- Final result visible: 3–6 months
- Complete healing: 12 months
Cost in Korea (2026)
- Standard MMA forehead augmentation: ₩6,500,000–11,500,000 ($4,900–8,650)
- Premium clinic with experienced surgeon: ₩9,500,000–14,500,000
- Combined with other facial procedures: package discount typical
- International patient package: 20–30% premium
Comparable US procedure: $12,000–22,000 (limited availability in US).
What forehead augmentation treats
- Flat foreheads lacking aesthetic convex curve
- Asymmetric forehead contour
- Forehead bone defects from injury or congenital anomaly
- Post-traumatic depressions
- FFS (facial feminization surgery) for transgender women
- Receding hairline patients seeking forehead profile balance
Endoscopic alternative technique
Some Korean clinics use endoscopic methods to move and reposition eyebrow tissue (soft tissue) toward the forehead center, providing alternative or complementary augmentation. This soft-tissue-only approach has limited application but can complement MMA implants in select cases.
Forehead fat grafting alternative
How fat grafting works
- Fat harvested from donor area (abdomen, thigh)
- Processed and purified
- Injected into forehead in small parcels
- Body integrates fat into existing tissue
Fat grafting advantages
- No implant material concerns
- Patient\'s own tissue
- Body contouring benefit at donor site
- Adjustable in subsequent sessions
- No incision scar at hairline
Fat grafting disadvantages
- Variable fat survival (50–70%)
- Often requires multiple sessions
- Subtle results compared to MMA
- Less precise final shape control
- Higher long-term volume loss
When fat grafting is preferred
- Mild forehead enhancement
- Patient prefers no implant material
- Combined body contouring desired
- Less aggressive intervention
When MMA implant is preferred
- Significant forehead depression
- Asymmetric correction needed
- Permanent stable result prioritized
- Patient prefers single procedure over multiple sessions
- FFS or transgender feminization context
Who is a good candidate for MMA implant?
- Significant forehead flatness or depression bothering patient
- Asymmetric forehead from injury or developmental cause
- Transgender women in FFS programs
- Cisgender patients seeking permanent forehead reshaping
- Adequate skin elasticity for soft tissue redrape
- Realistic expectations about recovery duration
- Acceptable medical fitness for general anesthesia
Wrong candidates
- Subtle forehead concerns better addressed with filler
- Active scalp or facial infection
- Body image issues outside the specific forehead concern
- Significant medical comorbidities
- Bleeding disorders
- Smokers unable to stop 1 month before/after
- Patients unable to tolerate hairline incision scar
Risks specific to MMA forehead implant
- Infection (1–3% historically with proper protocols)
- Implant extrusion (rare)
- Forehead skin necrosis (rare)
- Persistent scalp numbness (5–15%)
- Visible scar at coronal incision (well-hidden typically)
- Implant shifting (very rare with bonded MMA)
- Allergic reaction to MMA components (very rare)
- Need for revision surgery (5–10%)
- Asymmetric result requiring touch-up
Combination with other procedures
Forehead augmentation is often performed alongside:
- Hairline lowering surgery: for patients with both forehead and hairline concerns
- Brow lift: repositioning brows to complement new forehead shape
- Rhinoplasty: facial proportion comprehensive approach
- FFS package: brow bone reduction + forehead implant for transgender women
The 2026 Korean clinic landscape
MMA forehead augmentation remains a specialty procedure. Top Korean clinics offering it include Wonjin Plastic Surgery, JW Plastic Surgery, Answer Plastic Surgery, and select Cheongdam facial contouring practices. Patient selection is conservative — most Korean surgeons recommend fat grafting for milder cases and reserve MMA for cases where significant permanent augmentation is genuinely indicated.
For international patients
- Pre-surgical 3D imaging can be done in Korea
- Plaster casting requires multiple Korea visits (1–2 weeks apart)
- Total stay: 14–21 days for procedure + initial recovery
- Online follow-up at 1 month, 3 months, 6 months
- Plan for makeup-free initial weeks due to scalp incision
Maintenance and long-term considerations
- No maintenance treatments needed for the implant itself
- Yearly follow-up recommended for first 3 years
- Long-term complications very rare with proper initial surgery
- Implant remains stable for life in most patients
- Revision surgery possible but rarely needed
Honest framing
Forehead MMA augmentation is a serious surgery with permanent commitment. The Korean expertise in this procedure is genuine — sustained practice over decades, refined techniques, and documented outcomes. For patients with significant forehead concerns, this is the right intervention. For mild cosmetic concerns, less invasive options (fat grafting, filler) may be more appropriate. Cosmetic forehead implants are not for trend-following — they\'re for patients with genuine anatomical concerns who have considered the decision carefully. Korean specialists routinely counsel patients to consider conservative alternatives first; many patients are not appropriate candidates despite initial interest. Choose Korean clinics with documented MMA implant experience specifically (not general plastic surgery). The 2026 procedure represents significant medical commitment with significant aesthetic reward when appropriately applied.