Procedure dossier
Buttock Augmentation (BBL)
Also known as Brazilian Butt Lift or gluteal augmentation
Buttock augmentation is a cosmetic surgical procedure designed to enhance the size, shape, and projection of the buttocks [1]. The most popular approach is the Brazilian Butt Lift (BBL), which uses the patient's own fat harvested via liposuction from other body areas and transferred to the buttocks. Alternatively, buttock augmentation can be achieved with silicone implants for patients who do not have sufficient donor fat.
The Brazilian Butt Lift has become one of the most sought-after cosmetic procedures worldwide. By using autologous fat transfer, it offers the dual benefit of slimming donor areas through liposuction while augmenting the buttocks with natural-feeling tissue. The result is a fuller, rounder buttock contour that complements the patient's overall body proportions.
It is essential that patients considering buttock augmentation, particularly the BBL, understand the safety considerations associated with this procedure. Fat grafting to the buttocks has historically been associated with a higher risk of fat embolism compared to other cosmetic procedures [2]. Adherence to current safety guidelines, including superficial fat injection techniques, has significantly reduced this risk, but careful surgeon selection and awareness of safety protocols remain critically important.
Average range
$8,000 - $18,000
Recovery
8 weeks
Duration
3.5 hours
Anesthesia
General
Complexity
Advanced
Category
Body
01 / The brief
What to know first
The Brazilian Butt Lift procedure involves two primary steps: liposuction to harvest fat from donor areas, and fat injection into the buttocks. During the liposuction phase, the surgeon removes fat from areas such as the abdomen, flanks, back, or thighs. The harvested fat is then processed and purified to select the healthiest, most viable fat cells for transfer.
The purified fat is carefully injected into multiple layers of the buttock tissue in small quantities using specialized cannulas. The surgeon sculpts and shapes the buttocks by strategically placing fat in different areas to achieve the desired volume, projection, and contour. Modern safety guidelines emphasize that fat should be injected into the subcutaneous tissue above the gluteal muscle, not into or beneath the muscle, to minimize the risk of fat embolism [2].
Not all transferred fat cells survive the grafting process. Typically, 60 to 80 percent of the transferred fat establishes a blood supply and becomes permanent [1]. The surviving fat behaves like normal fat tissue and will respond to weight changes accordingly. Surgeons often slightly overcorrect during the procedure to account for the expected volume loss during the initial healing period.
Buttock implant augmentation is an alternative for patients who do not have enough body fat for a BBL. Solid silicone implants are placed either within or on top of the gluteal muscle through an incision in the natural crease between the buttocks [1]. Implants provide a predictable, permanent volume increase but carry distinct risks including implant displacement, capsular contracture, and a less natural feel compared to fat transfer.
The procedure is performed under general anesthesia and takes approximately three to four hours. Recovery requires avoiding sitting directly on the buttocks for at least six to eight weeks and wearing a compression garment. Most patients can return to normal activities within six to eight weeks.
02 / Approaches
Techniques and options
The Brazilian Butt Lift (BBL) using autologous fat transfer is the most popular technique [1]. Fat is harvested via liposuction, processed (commonly using centrifugation, filtration, or decanting), and injected into the buttocks using blunt-tipped cannulas in a multi-layer, multi-directional pattern. Current ASPS safety guidelines mandate that fat be injected only into the subcutaneous fat layer above the gluteal muscle fascia, using a large-bore cannula and avoiding deep intramuscular injection [2]. This approach significantly reduces the risk of fat embolism while producing natural-looking, natural-feeling augmentation.
Buttock implant augmentation uses solid, semi-solid, or cohesive silicone implants placed through a single incision in the intergluteal crease (between the buttocks). Implants can be positioned in the intramuscular plane (within the gluteal muscle), subfascial plane (beneath the fascia but above the muscle), or submuscular plane (beneath the muscle). The intramuscular placement is most common and provides good coverage and a natural appearance. Implants are available in various shapes and sizes to match the patient's goals and anatomy.
A combined approach using both fat transfer and implants is occasionally employed for patients who desire significant augmentation but have limited donor fat. The implant provides the primary volume increase, and fat transfer is used to refine the contour and smooth the transition between the implant and surrounding tissue. This hybrid approach can achieve a more natural-looking result than implants alone.
Composite buttock augmentation using dermal fat grafts or acellular dermal matrix is a less common technique sometimes used for patients who need soft tissue augmentation but are not candidates for standard implants or fat transfer. This approach is typically reserved for reconstructive cases or revision procedures.
03 / Candidacy
Who may be a candidate
Often considered
Ideal candidates for a Brazilian Butt Lift have sufficient donor fat in areas such as the abdomen, flanks, back, or thighs to provide enough volume for meaningful augmentation. They should be at a stable, healthy weight with good skin elasticity. Candidates for buttock implants may have less body fat but should be in good overall health. All candidates should be non-smokers, have realistic expectations about the procedure's capabilities, and be willing to follow strict post-operative protocols including avoiding sitting directly on the buttocks for several weeks.
Reasons to pause
Patients who are significantly underweight or have very low body fat may not have sufficient donor fat for a BBL and may need to consider implants or accept more limited augmentation. Active smokers face elevated risks of fat cell death and wound healing complications. Patients with bleeding disorders, active infections, or poorly controlled medical conditions are not suitable candidates. Individuals who are unable or unwilling to comply with the post-operative sitting restrictions, which are essential for fat graft survival, should reconsider the timing of the procedure. Patients with unrealistic expectations about the degree of augmentation achievable should discuss limitations thoroughly with their surgeon.
04 / Tradeoffs
Potential benefits and risks
Potential benefits
Buttock augmentation, particularly the BBL, offers dual body contouring benefits by simultaneously slimming donor areas through liposuction and enhancing the buttocks [1]. This combination creates a more dramatic improvement in overall body proportions than either procedure alone. The use of the patient's own fat produces a natural look and feel that is difficult to distinguish from natural buttock tissue.
The procedure can significantly improve body proportions, creating a more balanced silhouette with a defined waist-to-hip ratio. Patients frequently report increased confidence, greater satisfaction with their appearance in clothing and swimwear, and improved body image. The contouring of both the donor and recipient areas provides comprehensive body sculpting in a single surgical session.
For patients using implants, the procedure provides predictable, lasting volume enhancement that is not dependent on having adequate donor fat. Modern implant designs and placement techniques can achieve natural-appearing results with a high degree of patient satisfaction.
Risks to discuss
The most serious risk associated with the Brazilian Butt Lift is fat embolism, in which injected fat enters blood vessels in the buttock area and travels to the lungs, potentially causing a pulmonary embolism [2]. This risk is highest when fat is injected deep into or beneath the gluteal muscle. Strict adherence to current ASPS safety guidelines, which mandate superficial subcutaneous fat injection, has significantly reduced the incidence of this complication [2]. Patients should verify that their surgeon follows these evidence-based safety protocols.
Other surgical risks include infection, bleeding, blood clots, asymmetry, and adverse reactions to anesthesia. Fat necrosis (death of transferred fat cells) can cause firm lumps or areas of hardness within the buttocks. Seroma and hematoma are possible and may require drainage. Contour irregularities, over-correction, or under-correction may require revision procedures.
Risks specific to implant augmentation include implant displacement or rotation, capsular contracture (scar tissue tightening around the implant), implant infection, and chronic pain [1]. Implants may need to be replaced or removed at some point during the patient's lifetime. Wound healing complications at the intergluteal incision site are relatively common due to the location's exposure to moisture and friction.
05 / Planning
Preparation and recovery
Before the procedure
Preparation begins with a consultation where your surgeon will evaluate your body composition, assess the availability of donor fat, discuss your augmentation goals, and recommend the most appropriate technique. Pre-operative testing including blood work is typically required, and medical clearance may be needed depending on your health status.
Stop smoking at least four to six weeks before surgery. Discontinue blood-thinning medications and supplements as directed by your surgeon. Some surgeons recommend gaining a small amount of weight before the procedure to increase the available donor fat. Purchase the required compression garments and a BBL pillow or cushion for sitting during recovery. Arrange for transportation home and assistance during the first few days. Prepare your home with supplies for recovery, including meals that can be eaten while standing or lying on your side.
Aftercare
Following a BBL, the most critical aspect of aftercare is avoiding direct pressure on the buttocks for at least six to eight weeks to maximize fat cell survival. Use a BBL pillow when sitting is unavoidable, and sleep on your stomach or side. Wear the prescribed compression garment continuously for the recommended period, typically four to eight weeks, to control swelling and support your new contours.
Lymphatic massage sessions are often recommended beginning one to two weeks after surgery to reduce swelling, prevent fluid buildup, and promote smooth healing. Follow all wound care instructions, take prescribed medications as directed, and attend all scheduled follow-up appointments. Avoid strenuous exercise for at least six to eight weeks. Some surgeons recommend a graduated return to sitting without a pillow beginning at three to four weeks, with progressive increases over the following weeks.
Rest at home; avoid sitting on buttocks; sleep on stomach or side; manage pain with medication
Begin lymphatic massage sessions; light walking; compression garment worn continuously; avoid prolonged sitting
Gradually increase activity; may begin sitting with BBL pillow for short periods; most daily tasks manageable
Return to desk work using BBL pillow; bruising and swelling in donor areas significantly improved
Begin transitioning to sitting without pillow; continue wearing compression garment
Resume exercise gradually with surgeon approval; most restrictions lifted
Final results become apparent as swelling resolves and fat graft stabilizes; scars fade
Expected results
Patients can expect a fuller, rounder, and more projected buttock contour following augmentation. With the BBL, the dual benefit of liposuction from donor areas creates an overall improvement in body proportions, often producing a more dramatic transformation than buttock augmentation alone. The buttocks will appear naturally enhanced, and the fat transfer results in a soft, natural feel.
Initial results will appear larger than the final outcome due to post-operative swelling and the fact that some transferred fat cells will not survive. Patients typically see their final BBL results at approximately three to six months when swelling has resolved and fat cell survival has stabilized. Some surgeons recommend a second fat transfer session several months after the initial procedure if additional volume is desired.
Results from fat transfer are permanent for the surviving fat cells. These cells will behave like normal fat and will enlarge with weight gain and shrink with weight loss. Maintaining a stable weight is important for preserving the shape and proportions achieved. Implant results are also permanent, though implants may eventually require replacement or revision over a patient's lifetime.
06 / Common questions
Frequently asked
How dangerous is the Brazilian Butt Lift procedure?
The BBL has historically carried a higher risk of fat embolism than other cosmetic procedures. This occurs when injected fat enters blood vessels and travels to the lungs. However, updated safety guidelines published by the ASPS and adopted by the aesthetic surgery community have significantly reduced this risk. These guidelines mandate that fat be injected only into the subcutaneous layer above the muscle, using large-bore cannulas and ultrasound guidance when available. When performed by a board-certified plastic surgeon who follows current safety protocols in an accredited facility, the risk of fatal fat embolism has been greatly reduced. Always verify your surgeon's credentials and adherence to these guidelines.
How much fat survives after a Brazilian Butt Lift?
Typically, 60 to 80 percent of the transferred fat cells survive and become permanent. The survival rate depends on several factors including the surgeon's technique, the quality of the harvested fat, and the patient's post-operative care. Avoiding sitting directly on the buttocks during the critical first six to eight weeks of healing is essential for maximizing fat cell survival. The surviving fat cells establish a blood supply and behave like natural fat tissue permanently. Some patients choose to have a second fat transfer session several months later if additional volume is desired.
What is the difference between a BBL and buttock implants?
A Brazilian Butt Lift uses your own fat harvested via liposuction and injected into the buttocks. It provides a natural look and feel, offers the added benefit of slimming donor areas, but is limited by the amount of available donor fat. Buttock implants use solid silicone devices placed surgically within or around the gluteal muscle. Implants provide a more predictable and potentially larger volume increase, are not dependent on having adequate body fat, but carry risks of capsular contracture, implant displacement, and a less natural feel. Your surgeon will recommend the best approach based on your body composition and goals.
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