In this guide18 sections
- Key Points
- What Is the Difference Between a BBL and Butt Implants?
- Butt Implants vs BBL: Side-by-Side Comparison
- What Is a BBL and How Is It Done Safely?
- What Are Butt Implants Made Of?
- Which Is Safer, a BBL or Butt Implants?
- BBL vs Butt Implants Recovery: What Is the Difference?
- Which Looks More Natural: a BBL or Butt Implants?
- Big Butt Surgery: Which Gives the Biggest Result?
- Who Is a Good Candidate for a BBL or Butt Implants?
- Can You Combine Butt Implants With a BBL?
- Butt Implants vs BBL for Men
- How Long Do a BBL and Butt Implants Last?
- Can Fillers Replace a BBL or Butt Implants?
- Is a BBL or Butt Implants Cheaper?
- Frequently Asked Questions
- BBL and Butt Implants in London
- References
Key Points
- A BBL uses your own fat; butt implants use a solid silicone implant. A BBL also slims the donor areas, while implants add volume without any liposuction.
- Donor fat decides most cases. A BMI of about 23 to 28 usually gives enough fat for a BBL. Implants are mainly for very slim people, typically with a BMI below 20.
- Implants have roughly double the complication rate. Systematic reviews report complications in about 22% to 25% of implant operations against about 10% to 13% of fat transfer operations.
- The serious BBL risk is fat embolism, and technique controls it. Fat placed only under the skin, above the muscle, is linked to the large fall in BBL deaths.
- Implant recovery is longer. After a BBL you avoid sitting on your buttocks for 2 weeks; after implants you also need a support cushion until week 8 and wait 8 weeks before the gym.
- You can have both. Implants can give the core volume with fat transfer around them to soften the edges, which suits slim people who want a bigger change.
For most people, a BBL (Brazilian butt lift) is the better choice than butt implants if they have enough spare fat: it looks and feels more natural, reshapes the waist and hips at the same time, and has a lower complication rate. Butt implants are the better option when you are too slim for fat transfer to make a meaningful difference, or when you want more projection than your own fat can reliably give.
This guide compares a Brazilian butt lift with buttock implants, also called bum implants, side by side: materials, size limits, recovery, published complication rates, longevity and combining the two. If you are slim, our guide to what happens if you don’t have enough fat for a BBL explains how surgeons assess donor fat.
What Is the Difference Between a BBL and Butt Implants?
Both operations make the buttocks fuller and more shapely, but they work in completely different ways.
A BBL is a fat transfer procedure. Your surgeon removes fat by liposuction from areas such as the abdomen, flanks, lower back and thighs, and injects it into the buttocks. Despite the name, a BBL does not lift loose skin; it adds volume and reshapes. Some of the fat is reabsorbed, and the fat that survives behaves like the rest of your body fat.
Butt implants, also called buttock implants or gluteal implants, are solid silicone devices placed through an incision in the fold between the buttocks. Nothing is taken from elsewhere, so the waist and hips do not change, but the volume is fixed and does not reabsorb. In short, a BBL is body contouring that also enlarges the buttocks; implant surgery is buttock augmentation only.
Butt Implants vs BBL: Side-by-Side Comparison
The table below sets out how a BBL and butt implants compare at Centre for Surgery. Timings are typical and your surgeon will tailor them to you.
| Factor | BBL (fat transfer) | Butt implants |
|---|---|---|
| Material | Your own fat, taken by liposuction | Solid silicone implant, 200cc to 600cc |
| Donor fat needed | Yes. A BMI of about 23 to 28 usually gives enough; a skinny BBL can work below 23 | No. Mainly for very slim people, typically a BMI below 20 |
| Size limits | Limited by how much fat you have and how much the tissue can safely hold; 50% to 70% of transferred fat survives | Limited by the size of pocket the gluteal muscle can hold; larger implants carry more risk of shifting and wound problems |
| Shape | Shapes the whole buttock and hips, and slims the waist through liposuction | Adds projection mainly to the upper and central buttock; hips and waist unchanged |
| Feel | Soft, your own tissue | Firmer; can be felt, especially in slim people |
| Longevity | Surviving fat is permanent from about 6 months but changes with your weight | Permanent unless a complication needs revision or removal |
| Operation | 3 to 4 hours, day case under TIVA | 1 to 2 hours, day case under TIVA |
| Sitting | No sitting on the buttocks for 2 weeks; short spells of normal sitting from week 3 | No pressure on the buttocks for 2 weeks, then sit only on a support cushion until week 8 |
| Compression | 6 weeks, day and night, on the donor areas | 4 weeks, continuously |
| Exercise | Walking from day 1, light cardio from week 3, full exercise including weights from week 6 | Gym and exercise from week 8, once cleared at your 6-week review |
| Driving | 4 weeks | 4 weeks |
| Time off work | 1 to 2 weeks | About 2 weeks, using the support cushion at your desk |
| Risks (published rates) | Overall complications about 10% to 13%, most often seroma and infection[1][2]; fat embolism is rare but serious, with reported deaths falling from 1 in 3,448 to 1 in 14,952 once safer techniques were adopted[3] | Overall complications about 22% to 25%, most often wound separation (about 9% to 10%), seroma and palpable implants[1][2] |
| Revision | Cannot be fully reversed, but can be refined with liposuction or further fat grafting | Implants can be exchanged, repositioned or removed |
| Scars | Several 3 to 4 mm incisions in natural creases | A single incision hidden in the fold between the buttocks |
| Cost | Butt implants cost more than a BBL. See our BBL cost guide for current prices | |
What Is a BBL and How Is It Done Safely?
At Centre for Surgery, fat is harvested by power-assisted liposuction (PAL) or VASER, with your surgeon recommending the method that suits your tissue, then grafted with a blunt cannula using expansion vibration lipofilling (EVL).
The most important safety rule is where the fat goes. Fat is injected only into the subcutaneous layer, under the skin and above the gluteal muscle, never into or beneath it, and every BBL is performed under real-time ultrasound guidance so your surgeon can see the cannula stay in that layer. In a series of 4,150 BBLs, real-time ultrasound confirmed that fat stayed above the deep gluteal fascia, the layer separating the fat from the muscle and its large veins[4].
A full BBL typically uses around 1,600 to 2,000 ml of fat across both buttocks, compared with 800 to 1,000 ml in a mini BBL. Around 50% to 70% of the fat survives, so your surgeon over-fills slightly. Most of the result shows at 3 months and the final shape settles at 3 to 6 months. The operation takes 3 to 4 hours as a day case under TIVA (total intravenous anaesthesia).
What Are Butt Implants Made Of?
Butt implants are made of solid silicone: a firm but flexible block of medical-grade silicone that holds its shape. They are not filled with liquid, so they cannot leak or deflate, and rupture is uncommon. Sizes range from 200cc to 600cc, chosen in proportion to your frame.
At Centre for Surgery, the implants go in through a single midline incision in the fold between the buttocks, and each sits in a pocket within the gluteal muscle (intramuscular placement) rather than under it, which lowers the risk of irritating the sciatic nerve. The operation takes 1 to 2 hours as a day case under TIVA.
Placement matters. A 2025 meta-analysis of 2,682 implant patients found the most wound breakdown and seroma when implants sat in the superficial subfascial plane, fewer complications with intramuscular and submuscular placement, and an overall implant removal rate of 1.05%[5]. The gluteal muscles are also among the strongest in the body, and over time they can push an implant out of position. Displacement, where an implant moves, rotates or sits unevenly (sometimes searched for as a “flipped” butt implant), is a recognised reason for further surgery.
Which Is Safer, a BBL or Butt Implants?
On the published evidence, a BBL performed to current safety standards has fewer complications than butt implants. The difference is that implant complications are common but rarely life-threatening, while the rare serious complication of a BBL, fat embolism, can be fatal if fat is placed in the wrong layer.
Complication rates for butt implants vs BBL
Three systematic reviews have compared the two directly:
- A 2016 systematic review of 44 studies in Plastic and Reconstructive Surgery ↗ found an overall complication rate of 21.6% in 2,375 implant patients, led by wound separation (9.6%), seroma (4.6%), infection (1.9%) and temporary sciatic nerve symptoms (1.0%). In 3,567 fat transfer patients the overall rate was 9.9%, led by seroma (3.5%), under-correction (2.2%), infection (2.0%) and pain or sciatica (1.7%)[1].
- A 2023 UK systematic review in the Journal of Plastic, Reconstructive and Aesthetic Surgery ↗ found complications in 25% of 524 implant operations, most often wound separation (9.16%), implants that could be felt (5.92%) and seroma (3.82%), against 13% of 1,788 fat transfer operations. The authors added that fat transfer can be far more dangerous if safety recommendations are not followed[2].
- A 2019 meta-analysis of 4,362 patients found the highest complication rate with implants (31.4%) and the lowest with fat grafting (6.8%)[6].
BBL safety and the risk of fat embolism
A BBL’s reputation comes from fat embolism, where fat enters the large veins around the gluteal muscle and travels to the lungs. A 2017 task force survey of 692 surgeons, covering 198,857 gluteal fat grafting cases, linked fatal and non-fatal fat emboli to injecting into the deep muscle[7].
Its recommendations worked. A 2020 follow-up survey published in the Aesthetic Surgery Journal ↗ found that the share of surgeons injecting into deep muscle had fallen from 13.1% to 0.8%, and the estimated death rate from 1 in 3,448 to 1 in 14,952[3]. A survey of 853 Brazilian plastic surgeons found the risk of death was 16 times higher when fat was injected into the muscle[8]. BBL safety depends on the plane, which is why subcutaneous-only injection under ultrasound is the standard at Centre for Surgery. Our article on BBL risks covers every complication in detail.
If you have enough fat, a subcutaneous, ultrasound-guided BBL carries the lower overall complication rate. If you do not, implants are a reasonable choice, but expect that around one in four to five patients has a complication, most often slow wound healing at the incision, and that some need further surgery. A proportionate implant size, stopping smoking and vaping for 4 weeks before and after surgery, and following the sitting rules all lower that risk.
BBL vs Butt Implants Recovery: What Is the Difference?
Recovery is where the two differ most day to day. With both you sleep on your front or side for the first 2 weeks and avoid driving for 4 weeks.
- After a BBL: no sitting directly on your buttocks for 2 weeks. Have a BBL cushion ready before surgery for times you cannot avoid sitting, and keep toilet visits brief, leaning forward. From week 3 you can sit normally for short spells. You wear compression on the donor areas for 6 weeks, walk from day 1, and return to full exercise including weights from week 6. Most people take 1 to 2 weeks off work. Our guide to when you can sit after a BBL explains this week by week.
- After butt implants: no pressure on the buttocks for 2 weeks, then sit only on a support cushion that takes your weight onto the thighs until at least week 8. You wear compression continuously for 4 weeks and return to the gym from week 8, once cleared at your 6-week review. Desk work is possible from about 2 weeks, using the cushion. Implants are generally more painful than a BBL, as a pocket is made within the muscle; the first 48 to 72 hours are the hardest.
Full return to activity after implants takes about 8 to 12 weeks, compared with about 6 weeks after a BBL.
Which Looks More Natural: a BBL or Butt Implants?
A BBL usually looks and feels more natural. The fat becomes part of your own tissue, and your surgeon can place it where it improves the shape, including the hips and outer buttock, while liposuction of the waist sharpens the curve from waist to hip.
Implants give a rounder, more projected upper buttock, but they sit centrally and cannot fill the hips. In very slim people the edge of an implant can sometimes be seen or felt, particularly when sitting, which is one reason surgeons often add fat around it.
Real Centre for Surgery patient, photographed at least six months after BBL surgery. See more results in our BBL before and after photos.
360 liposuction with BBL, before and after. Individual results vary.
Big Butt Surgery: Which Gives the Biggest Result?
If your goal is a much bigger bum, both operations have limits. With a BBL, the ceiling is how much fat you have and how much the tissue under the skin can safely hold. Over-packing raises the risk of fat dying off and forming lumps or oil cysts, and poorly supplied fat is reabsorbed anyway, so a “big BBL” is achieved safely over stages, with a second BBL discussed once the first has settled, rather than in one session.
With implants, the ceiling is the pocket the gluteal muscle can hold, up to around 600cc; an implant too large for your frame raises the risk of wound breakdown and displacement. For slim people who want more than either gives alone, the combined approach below is often the answer.
Who Is a Good Candidate for a BBL or Butt Implants?
- A BBL usually suits you if you have spare fat around the abdomen, flanks, back or thighs (a BMI of about 23 to 28 usually provides enough, and a skinny BBL can work below 23), want a curvier figure including the waist and hips, have hip dips or a flat, square shape to round out, and have kept a stable weight for at least 3 months.
- Butt implants usually suit you if you are very slim, typically with a BMI below 20, want more projection than your own fat can reliably give, are happy with your waist and hips, and can commit to the longer recovery.
Your natural shape matters too. An A-shaped buttock often needs only modest enhancement, a V-shaped one benefits from filling the lower half, an H-shaped or square one usually needs fat at the hips and liposuction of the flanks, and an O-shaped one can be accentuated. A BBL can address all four, while implants mainly add central projection. Our guide to BBL shapes explains each type. Neither operation tightens loose skin; if your buttocks sag after weight loss, a buttock lift may be needed instead of, or as well as, adding volume.
Can You Combine Butt Implants With a BBL?
Yes. A combined approach, sometimes called composite gluteal augmentation, uses an implant for core volume and projection, with fat transferred around it to soften the edges and shape the hips. It suits slim people with some fat to harvest, but not enough for fat transfer alone. A 2026 meta-analysis of 13 studies of combined implants and fat grafting reported a pooled implant removal rate of 1.70%, lower with intramuscular placement (0.51%) than under the muscle (1.69%), although wound separation was more common with intramuscular implants (14.56%)[9]. Recovery follows the implant timeline, including the support cushion until week 8.
Butt Implants vs BBL for Men
Both options are available to men. A male BBL takes fat from the abdomen, flanks and back, sometimes the banana roll, and places it in the upper and central buttock for a squarer, more projected shape, leaving the hips untouched. Many men who want a fuller buttock are lean and muscular, with little fat to spare, and for them implants are often the more realistic option, with the same incision and recovery and a size chosen to suit a male frame.
How Long Do a BBL and Butt Implants Last?
Both are long-lasting. Fat that survives a BBL is permanent from about 6 months, but it is still fat, so it changes with your weight, age and pregnancy. Butt implants do not reabsorb or wear out, and need further surgery only if a problem such as displacement or asymmetry develops.
A BBL cannot be fully reversed, as the grafted fat develops its own blood supply, but it can be revised with liposuction to reduce fullness or further grafting to correct dents. Implants can be exchanged, repositioned or taken out. Butt implant removal can leave the buttocks looking flatter, and in some cases it is combined with fat transfer to restore volume at the same time.
Can Fillers Replace a BBL or Butt Implants?
Not for a large change. Butt thread lifts are also marketed as a lifting alternative, but published evidence for them is limited and Centre for Surgery does not offer them.
A non-surgical butt lift, or liquid BBL, uses HYAcorp hyaluronic acid filler injected by surgeons in a sterile theatre under ultrasound guidance. It gives a modest change lasting about 12 to 18 months and does not slim donor areas. Regulation is tightening: in August 2025 the Department of Health and Social Care announced that the highest-risk non-surgical procedures, such as a non-surgical BBL, should be performed only by qualified healthcare professionals at CQC-registered providers, and on 21 October 2026 it proposed that fillers injected anywhere other than the face, including liquid BBLs, be legally defined as cosmetic surgery so that only doctors could perform them[10].
Is a BBL or Butt Implants Cheaper?
Butt implants cost more than a BBL, reflecting the implants themselves and a more involved aftercare programme. The cost of a BBL depends on how many areas are treated with liposuction and whether a mini, standard or skinny BBL suits you; our BBL cost guide sets out current prices for both. Finance isn’t available for BBL at Centre for Surgery, so the procedure is self-funded, and the same applies to buttock implants.
Frequently Asked Questions
Are buttock implants safer than a BBL?
No. Systematic reviews report complications in about 22% to 25% of butt implant operations against about 10% to 13% of fat transfer operations, most often wound separation at the implant incision. A BBL’s rare but serious risk is fat embolism, which is linked to fat placed in the muscle. When fat goes only under the skin, with real-time ultrasound guidance, a BBL has the lower overall complication rate.
Are BBLs implants?
No. A BBL does not use implants. It uses your own fat, taken by liposuction from areas such as the abdomen, flanks and thighs, and grafted into the buttocks. Butt implants are a separate operation using a solid silicone implant. The two can be combined, but a standard BBL contains no implant.
What are butt implants made of?
Butt implants are made of solid silicone, a firm but flexible medical-grade material that holds its shape. They are not filled with liquid, so they cannot leak or deflate, and rupture is uncommon. Sizes typically range from 200cc to 600cc, and your surgeon chooses one in proportion to your frame.
Are bum implants dangerous?
Bum implants are not usually life-threatening, but they have one of the higher complication rates in cosmetic surgery. About one in four to five patients has a complication, most often slow wound healing, seroma, infection or an implant that can be felt or moves. Some of these need further surgery. Intramuscular placement, a proportionate size and not smoking all lower the risk.
Can you get a BBL with implants?
Yes. Some people have implants for core volume and fat transfer around them to soften the edges and shape the hips. This suits slim people who have some fat, but not enough for fat transfer alone. Recovery follows the implant timeline, including a support cushion until week 8.
Do butt implants feel natural?
Butt implants feel firmer than natural tissue. In people with a reasonable layer of fat over the muscle they are often hard to detect, but in very slim people the edge can sometimes be felt or seen, especially when sitting. Adding fat around the implant can make the result feel softer. A BBL feels like your own tissue.
Which is better for a big butt, a BBL or implants?
It depends on your fat. If you have plenty of donor fat, a BBL can create a large, natural-looking result, sometimes over two stages. If you are slim, implants up to around 600cc, or implants combined with fat transfer, can give more volume than fat alone. Your surgeon will recommend a size your frame can safely hold.
BBL and Butt Implants in London
BBL and buttock implant surgery at Centre for Surgery are performed by GMC-registered surgeons at our CQC-regulated Baker Street hospital, rated Good overall by the CQC, as day cases under TIVA. At your consultation your surgeon will assess your donor fat, shape and goals, and tell you honestly whether a BBL, implants or a combination suits you best. The consultant who assesses you is the consultant who performs your surgery, further consultations before surgery are free, and we recommend a two-week cooling-off period before you go ahead. Your initial consultation is £100, redeemable against the cost of surgery if you go ahead.
Phone: 020 7993 4849 | Address: 95–97 Baker Street, Marylebone, London W1U 6RN
Contact us to schedule a consultation
References
- Sinno S, Chang JB, Brownstone ND, Saadeh PB, Wall S. Determining the safety and efficacy of gluteal augmentation: a systematic review of outcomes and complications. Plastic and Reconstructive Surgery 2016;137(4):1151–1156. doi:10.1097/PRS.0000000000002005 ↗
- Oregi P, Khatib M, Cavale N, Rahman SM. Comparing the safety profiles of implants and autologous fat grafting in gluteal augmentation: a systematic review. Journal of Plastic, Reconstructive and Aesthetic Surgery 2023;83:463–474. doi:10.1016/j.bjps.2023.04.066 ↗
- Rios L, Gupta V. Improvement in Brazilian butt lift (BBL) safety with the current recommendations from ASERF, ASAPS, and ISAPS. Aesthetic Surgery Journal 2020;40(8):864–870. doi:10.1093/asj/sjaa098 ↗
- Pazmiño P, Del Vecchio D. Static injection, migration, and equalization (SIME): a new paradigm for safe ultrasound-guided Brazilian butt lift: safer, faster, better. Aesthetic Surgery Journal 2023;43(11):1295–1306. doi:10.1093/asj/sjad142 ↗
- Elsaftawy A, Bonczar M, Jagosz M, Ostrowski P. Complications following primary implant-based gluteal augmentation: a systematic review and meta-analysis. Plastic and Reconstructive Surgery 2025;156(6):894–907. doi:10.1097/PRS.0000000000012213 ↗
- Asserson DB, Kulinich AG, Orbay H, Sahar DE. Differences in complication rates of gluteoplasty procedures that utilize autologous fat grafting, implants, or local flaps. Annals of Plastic Surgery 2019;82(5S Suppl 4):S342–S344. doi:10.1097/SAP.0000000000001765 ↗
- Mofid MM, Teitelbaum S, Suissa D, et al. Report on mortality from gluteal fat grafting: recommendations from the ASERF Task Force. Aesthetic Surgery Journal 2017;37(7):796–806. doi:10.1093/asj/sjx004 ↗
- Cansancao AL, Condé-Green A, Gouvea Rosique R, Junqueira Rosique M, Cervantes A. “Brazilian butt lift” performed by board-certified Brazilian plastic surgeons: reports of an expert opinion survey. Plastic and Reconstructive Surgery 2019;144(3):601–609. doi:10.1097/PRS.0000000000006020 ↗
- Elsaftawy A, Bonczar M, Bonczar T, et al. Characteristics and complications of combined implant and lipoplasty techniques in primary gluteal augmentation: a systematic review and meta-analysis. Aesthetic Surgery Journal 2026;46(7):720–727. doi:10.1093/asj/sjaf208 ↗
- Department of Health and Social Care. Cosmetic cowboys crackdown continues with new restrictions. GOV.UK, 21 October 2026. gov.uk ↗
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