A brow ridge implant is a surgical device placed over or along the supraorbital rim to add projection and contour to the forehead’s lower edge, the bony shelf that sits just above your eyes. People pursue this procedure for a range of reasons: some want a more angular, traditionally masculine upper face; others seek to restore volume lost to aging or trauma; and in facial masculinization surgery, brow augmentation is considered one of the most impactful changes a surgeon can make to shift facial perception. The procedure has evolved considerably in the past decade, with custom-designed implants, newer biomaterials, and less invasive surgical approaches reshaping what is possible and what recovery looks like.
Why the Brow Ridge Matters So Much for Facial Perception
The brow ridge is one of the strongest visual cues the human brain uses to read a face as masculine or feminine. Research using three-dimensional scans of dry crania has confirmed that browridge-to-cranium volume ratios differ significantly between male and female skulls, with male brow ridges projecting further forward and carrying more volume relative to total skull size.1PubMed. Sexual dimorphism in human browridge volume measured from 3D models of dry crania: a new digital morphometrics approach Separate quantitative analysis has found significant effects of both sex and ancestry on brow morphology, consistent with what physical anthropologists have long noted qualitatively.2PubMed. Sexual dimorphism in skeletal browridge and chin morphologies determined using a new quantitative method In practical terms, this means a person whose brow ridge is flat or minimally projecting can look noticeably different with even a few millimeters of added bone-level projection. The effect goes beyond the bone itself: a stronger brow ridge positions the eyebrows differently relative to the eyes, creating deeper-set eye sockets and more shadow across the upper face.
Facial masculinization literature describes the contour of the brow and glabella (the smooth area between the eyebrows) as one of the most gender-determinative features of the face. A masculine forehead typically has low, flat eyebrows sitting right at or slightly anterior to the superior orbital rim, projecting forward of the eyes.3Operative Techniques in Otolaryngology-Head and Neck Surgery. Facial masculinization surgery For people seeking masculinization, augmenting this area with an implant is often the single most effective step in changing how the upper third of the face reads.
Who Gets Brow Ridge Implants
The patient population is broader than you might guess. The most commonly discussed group in the surgical literature is transgender men and transmasculine individuals undergoing facial masculinization surgery, where forehead and brow augmentation sits alongside procedures like jaw augmentation and chin reshaping. But cisgender men who feel their forehead profile is too flat or recessed also seek brow ridge implants for purely aesthetic reasons. A study of 54 patients in East Asia, for example, documented superciliary arch augmentation with silicone implants specifically to improve the three-dimensionality and contour of the upper face, with patient satisfaction scores averaging about 4.5 out of 5 at one year.4Journal of Craniofacial Surgery. East Asia Superciliary Arch Augmentation With Silicone Implant
Reconstructive cases round out the clinical picture. People who have lost bone from trauma, tumor removal, or congenital underdevelopment may need brow region augmentation to restore facial symmetry. In these situations the procedure overlaps with broader cranioplasty techniques, though the aesthetic goals are the same: a natural-looking, smooth forehead contour with appropriate projection over the eyes.
Implant Materials
The material your implant is made from affects how it feels, how tissue grows around it, how visible it is on imaging, and how easy it is to revise if something needs adjustment. Several options exist, each with trade-offs.
- Silicone: The most widely used facial implant material overall. Solid silicone is smooth, relatively soft, and easy for a surgeon to carve or trim during the operation. It does not integrate with surrounding bone or tissue, which means it can be removed or swapped out relatively cleanly if revision is needed. The trade-off is that it sits in a pocket of scar tissue (a fibrous capsule) and can shift position over time, especially if it is not secured with screws. The East Asian superciliary augmentation study used silicone implants and reported a minor complication rate of about 44%, though all complications resolved within one month without treatment.5Journal of Craniofacial Surgery. East Asia Superciliary Arch Augmentation With Silicone Implant Those minor complications included temporary swelling and numbness, not the kind of problems requiring reoperation.
- Porous polyethylene (Medpor): A rigid, microporous material that allows tissue to grow into its pores, locking the implant in place biologically. This integration is a major advantage for long-term stability but makes removal significantly harder if revision is needed, since living tissue is literally woven through the implant. Research into surface modifications for Medpor has shown that treating the surface to increase its wettability and adding biochemical cues can further enhance tissue infiltration, blood vessel formation, and overall integration.6PubMed Central. Combining Surface Modification and Bioactive Cues to Enhance Medpor® Implant Integration In Vivo Some facial masculinization surgeons specifically recommend a minimally invasive endoscopic approach to insert microporous, high-density polyethylene orbito-frontal implants for brow augmentation.7Operative Techniques in Otolaryngology-Head and Neck Surgery. Facial masculinization surgery
- PEEK (polyetheretherketone): A high-performance thermoplastic that can be milled from a solid block using CAD/CAM technology to create patient-specific implants. PEEK is radiolucent, meaning it does not interfere with CT or MRI scans the way metal would. It is biocompatible and strong, and it has been gaining popularity for custom craniofacial work. A case report in the facial masculinization literature describes a patient-specific PEEK implant designed using a statistical shape model of the male face to achieve forehead masculinization.8PubMed. Endoscopic-Assisted Forehead Augmentation with Polyetheretherketone (PEEK) Patient-Specific Implant (PSI) for Aesthetic Considerations
- PMMA (polymethyl methacrylate): A bone cement that the surgeon mixes and molds during the operation, hardening directly on the bone surface. PMMA allows real-time sculpting, which some surgeons prefer for fine-tuning contour. The significant drawback is that the curing process produces heat (an exothermic reaction), and if the surgical site is not properly irrigated during polymerization, the heat can damage underlying bone. Narrative reviews of facial masculinization techniques flag this risk specifically and recommend careful irrigation during PMMA application.
- Hydroxyapatite: A calcium-phosphate ceramic that mimics the mineral component of bone. It has been used for brow augmentation with documented success in increasing projection of the upper lateral periorbital area and enhancing brow position and shape.9PubMed Central. Aesthetic Enhancement of the Brow using Hydroxyapatite Hydroxyapatite can integrate with bone over time, but it is brittle compared to PEEK or silicone and does not tolerate high-impact forces as well.
Engineering comparisons of custom cranial implants made from PMMA versus PEEK have found no significant differences in how the two materials deform under heavy loads, though they do differ in how internal stresses distribute across the implant.10PubMed Central. Finite Element Analysis of Patient-Specific 3D-Printed Cranial Implant Manufactured with PMMA and PEEK: A Mechanical Comparative Study For brow ridge applications, where the implant sits over thick frontal bone and is not subjected to the same mechanical demands as a large cranial defect repair, both materials are generally strong enough. The choice tends to come down to whether the surgeon wants the flexibility to sculpt intraoperatively (PMMA) or the precision of a pre-manufactured custom piece (PEEK).
A meta-analysis cited in the facial masculinization literature found that autologous bone grafts (bone harvested from the patient’s own skull) had the lowest complication and failure rates compared to PEEK, titanium, and PMMA implants. But bone grafts carry their own downsides: donor site morbidity, longer operating times, and less predictable volume retention as the graft can partially resorb over months to years.
How the Surgery Is Performed
Brow ridge implant placement generally follows one of two surgical approaches, and which one your surgeon uses depends on the implant type, the amount of augmentation, and whether other procedures are being done at the same time.
The traditional approach uses a bicoronal incision, a cut that runs from ear to ear across the top of the scalp, hidden within the hairline. The surgeon lifts the forehead skin and underlying tissue off the bone in a layer (a subperiosteal dissection), exposing the entire frontal bone and orbital rims. This gives excellent visibility and access for placing and securing large or complex implants. Facial feminization surgeons have used this same incision for the opposite purpose (reducing the brow ridge), and some have documented performing simultaneous hair transplantation during forehead reconstruction through this approach. The downside is that it is a bigger operation with a longer scar and more potential for swelling and temporary numbness across the scalp.
The less invasive alternative is an endoscopic approach, which uses several small incisions behind the hairline. A tiny camera and specialized instruments are inserted through these ports, and the surgeon dissects down to the bone under magnified video guidance. Endoscopic-assisted forehead augmentation has been described using custom PEEK implants, with the endoscope providing direct, magnified vision that allows access to the supraorbital rim and the lateral edge of the eyebrow arch while helping confirm implant position without damaging nerves and vessels.11PubMed. Endoscopic-Assisted Forehead Augmentation with Polyetheretherketone (PEEK) Patient-Specific Implant (PSI) for Aesthetic Considerations The scars are smaller, swelling tends to resolve faster, and the risk of scalp numbness is lower. The limitation is that the surgeon has less room to maneuver, so very large implants or complex intraoperative sculpting (as with PMMA cement) can be harder through this approach.
In either case, the implant is typically fixed to the underlying bone with tiny titanium screws to prevent migration. Once the implant is seated and the surgeon is satisfied with the contour, the tissue is laid back down and the incision is closed in layers.
Custom Versus Standard Implants
Off-the-shelf implants come in a range of standard sizes and shapes, and surgeons can trim or carve them during the operation to better fit a particular patient’s anatomy. These are less expensive and more readily available, and for straightforward cases where the goal is modest, symmetric augmentation, they work well. The silicone implants used in the East Asian superciliary arch study were standard designs with an average maximum thickness of about 4.5 mm, and patient satisfaction was consistently high.12Journal of Craniofacial Surgery. East Asia Superciliary Arch Augmentation With Silicone Implant
Custom implants are designed from a CT scan of your skull. Software maps your bone surface, and the implant is manufactured to fit your anatomy precisely, sometimes using 3D printing, sometimes CNC milling. The advantage is obvious: the implant sits flush against your bone with no gaps or rocking, and the surgeon can specify exact projection at every point along the brow. Research on 3D-printed custom cranial implants has shown that their tailored fit greatly facilitates surgical placement and eliminates the gap between implant and bone.13PubMed Central. Finite Element Analysis of Patient-Specific 3D-Printed Cranial Implant Manufactured with PMMA and PEEK: A Mechanical Comparative Study
The precision of custom implants is a double-edged sword, though. Because variations of just one or two millimeters can significantly affect the final appearance, one of the most notable risks is discovering after surgery that the projection is slightly too much or too little, leading to revision. This is the paradox of personalization: the tighter the tolerances, the more noticeable any small miscalculation becomes. Getting the digital design right during the planning phase, with careful communication between patient and surgeon about desired projection, is critical to avoiding a second trip to the operating room.
Risks and Complications
Every implant procedure carries risks, and brow ridge augmentation has its own specific set. Common complications across facial implant surgery include infection, seroma (fluid collection around the implant), nerve injury causing numbness or altered sensation, implant migration, asymmetry, and visible or palpable implant edges. The materials used in the frontal and supraorbital region include the same portfolio used elsewhere in the face: silicone, expanded polytetrafluoroethylene (ePTFE), porous polyethylene, and mesh materials, each with its own complication profile.
Infection is the most serious acute risk. An infected implant almost always needs to be removed, and the patient has to heal completely before a new implant can be placed, typically months later. Infection rates for facial implants vary by material and surgical technique, but the risk is generally in the low single digits for experienced surgeons working in sterile conditions.
Nerve damage is a particular concern in the brow region because the supraorbital and supratrochlear nerves exit through small notches in the bone right where the implant sits. Temporary numbness of the forehead is common after surgery and usually resolves over weeks to months. Permanent nerve injury is rare but possible, especially with extensive dissection or if the implant compresses a nerve against bone. The endoscopic technique’s magnified visualization helps surgeons identify and avoid these nerves, which is one reason it has gained favor for this specific area.14PubMed. Endoscopic-Assisted Forehead Augmentation with Polyetheretherketone (PEEK) Patient-Specific Implant (PSI) for Aesthetic Considerations
Bone resorption beneath the implant is a long-term concern that patients rarely hear about before surgery. When a rigid implant sits on bone and exerts constant pressure, the underlying bone can slowly thin over years. This is more of a concern with larger, heavier implants and with materials that do not integrate biologically. The effect is usually subtle and does not cause structural problems, but it can change the implant’s effective projection over time.
Recovery
Expect significant swelling for the first one to two weeks, particularly around the eyes. The forehead and brow region are highly vascular, so bruising tends to migrate downward, and you may wake up with swollen, discolored eyelids even though the surgery was above the eyebrows. This resolves on its own but can be alarming if you are not prepared for it.
If a bicoronal incision was used, temporary scalp numbness behind the incision line is nearly universal. Sensation usually returns gradually over several months as nerves regenerate, though some patients report patches of reduced feeling that persist for a year or longer. The temporal muscle, which sits on either side of the forehead and powers jaw movement, can also be affected by surgical dissection in the area. Studies of patients who underwent craniotomies (a related but more extensive procedure) found that a substantial proportion experienced jaw-related discomfort afterward, with some requiring splint therapy or physiotherapy to recover normal function.15PubMed Central. Postcraniotomy Function of the Temporal Muscle in Skull Base Surgery: Technical Note Based on a Preliminary Study For brow ridge implants placed through smaller incisions, temporal muscle issues are less common, but they are worth knowing about, especially if you are having a bicoronal approach combined with other forehead work.
Most patients can return to desk work within one to two weeks and resume exercise after four to six weeks, depending on their surgeon’s protocol. The final aesthetic result takes months to fully emerge as deep swelling resolves and tissue settles around the implant. Surgeons typically ask patients to wait at least three to six months before evaluating whether the result matches their goals.
Where 3D Bioprinting Fits In
Custom implants designed from CT scans and manufactured by 3D printing are already in clinical use, but a more ambitious technology is working its way through the research pipeline: 3D bioprinting. Rather than printing an inert plastic or ceramic implant, bioprinting aims to fabricate constructs that contain living cells, growth factors, or scaffolds seeded with the patient’s own biology, potentially allowing the implant to integrate with and eventually become part of the patient’s own bone.
Reviews of the field describe bioprinting as offering patient-specific solutions for repairing craniofacial defects across the zygomatic, orbital, nasal, and mandibular regions.16PubMed Central. Bioprinting for craniofacial reconstruction: A review of advancements, clinical use, and challenges The technology addresses a persistent limitation of autologous bone grafts: while the patient’s own bone remains the gold standard for reconstruction, harvesting it is invasive and causes donor site problems. Bioprinting could theoretically offer the biological advantages of autologous tissue without requiring a second surgical site.17Trends in Biotechnology. 3D bioprinting of tissues and scaffolds for craniofacial and facial reconstruction For now, though, bioprinted craniofacial constructs remain largely in the preclinical and early clinical research stage. If you are considering a brow ridge implant today, your options are the established materials discussed above. Bioprinted bone is likely years away from routine use in aesthetic forehead surgery, though the trajectory of the research suggests it will eventually arrive.
How Much Projection Is Realistic
One of the most common questions patients bring to consultations is how much bigger they can make their brow ridge. The answer depends on how much soft tissue is available to drape over the implant without looking stretched or unnatural. The forehead’s skin and frontalis muscle are relatively thick and forgiving compared to, say, the skin over the nose or chin, which is why brow augmentation can achieve proportionally large changes without obvious implant visibility.
In the East Asian superciliary augmentation study, the average maximum implant thickness was about 4.5 mm, which was enough to produce a visible change in facial contour that both patients and surgeons rated favorably.18Journal of Craniofacial Surgery. East Asia Superciliary Arch Augmentation With Silicone Implant Custom implants for facial masculinization sometimes go thicker, up to 7 or 8 mm at the point of maximum projection, but the more you add, the more important it becomes that the transition from augmented to non-augmented bone is smooth and gradual. An abrupt step-off at the implant edge will be palpable and potentially visible, especially in patients with thin skin. This is another area where custom implants have an advantage: the edges can be feathered to near-zero thickness so the transition blends seamlessly into the surrounding bone.
Hydroxyapatite cement and PMMA allow the surgeon to build up projection in a sculptural way during the operation, adding material and shaping it before it sets. This real-time feedback loop can be an advantage for fine-tuning contour, particularly in revision cases where the anatomy is irregular from a previous procedure. The brow augmentation work using hydroxyapatite demonstrated effective increases in upper lateral periorbital projection with aesthetically favorable brow enhancement.19PubMed Central. Aesthetic Enhancement of the Brow using Hydroxyapatite
The Revision Question
Revision rates for brow ridge implants are not well reported in aggregate, partly because the procedure is relatively niche and partly because patients are scattered across aesthetic, masculinization, and reconstructive cohorts that get studied separately. What the literature does make clear is that the most common reason for revision is dissatisfaction with the degree of projection, not implant failure or medical complications. Given that a millimeter or two of difference at the brow can visibly change appearance, it is not surprising that some patients want more or less after seeing the healed result.
Revision is generally straightforward with silicone implants: the capsule is opened, the old implant is removed, and a new one is placed. With integrated materials like porous polyethylene, revision is a bigger undertaking because the tissue that has grown into the implant pores must be dissected out, which can damage surrounding structures and leave irregular bone surfaces. PMMA bone cement, once hardened and bonded to bone, is removed by drilling and chiseling, which carries risks of its own. These practical differences in reversibility should factor into your initial material choice, especially if you are uncertain about exactly how much augmentation you want. Starting with a removable material like silicone and potentially upgrading later is a strategy some surgeons recommend for first-time patients who are unsure of their aesthetic goals.