Buttock augmentation changes the shape and projection of the buttocks, either by moving fat from elsewhere on your body or by placing an implant. It is one of the most demanding operations in body contouring — for the surgeon and for the recovery.
A fat transfer needs fat to transfer, and skin that can accommodate the new volume. Both are assessed standing, and both decide whether the operation is possible at all.
This is not a weight-loss operation and it is not a substitute for training. If you are underweight there may be nothing to harvest, and an implant is the only route — with a different set of risks. Smoking, clotting disorders and uncontrolled diabetes are reasons to reconsider.
Two operations share the name. They are not variations of each other: they differ in material, in recovery and in the serious risks.
Fat is liposuctioned from the abdomen, flanks or back, washed and allowed to settle, then injected into the buttock in small passes. It is your own tissue, so it feels natural and the donor areas are contoured at the same time. Not all of the fat survives.
A solid silicone implant is placed through an incision in the fold between the buttocks, deep to the fascia or in the muscle. It gives a predictable volume that does not shrink, but it is a foreign body with a risk of displacement, infection and capsule formation, and the scar is in a sensitive area.
Fat transfer can be combined with a small implant, or repeated after six to twelve months to add volume once the first transfer has settled. Revision of a previous BBL is usually harder than the first operation, because scar tissue changes the planes.
Standing photographs, an assessment of donor fat and skin elasticity, and a medical history that includes clotting, bleeding and previous surgery. Blood tests, and where relevant a cardiology or anaesthetic opinion, before a date is set.
Smoking stops at least four weeks before; nicotine affects fat survival and healing. Blood thinners, the contraceptive pill and some supplements are discussed and paused where appropriate. Buy loose clothing and a BBL pillow, and arrange help at home — you will not be able to lie or sit normally for weeks.
Under general anaesthesia, three to five hours. Fat is harvested, processed and injected in small aliquots, with care to stay away from the deep vessels. A compression garment is fitted, and most patients stay one or two nights.
You sleep on your stomach or side, and sit only on the designated cushion, briefly. The donor areas are bruised and sore, and the garments are worn continuously. Walking is encouraged from the first day; the buttocks are swollen and the shape is not yet the final one.
Sitting becomes comfortable over two to three weeks, driving after two to three, and exercise after six to eight. Swelling settles over three months; the fat that survives is permanent, but the final shape is judged at three to six months.
This operation has a serious risk that is specific to it, and it should be stated plainly rather than mentioned in passing.
Ask any clinic directly how it avoids deep intravascular injection, who performs the anaesthesia, and what happens if there is a complication. A clinic that answers vaguely about fat embolism is not a clinic to book with.
A variable proportion — often a substantial part is reabsorbed, and the result is smaller than the immediate postoperative volume. That is why the operation is planned conservatively and why a second session is sometimes needed after six to twelve months. No surgeon can promise a percentage.
Two to three weeks of sitting only on a cushion, for short periods, and sleeping on the stomach or side. Prolonged pressure in the first weeks is thought to reduce fat survival. Driving waits two to three weeks; long flights, four to six.
It carries a real risk of fat embolism, which can be fatal, and the risk is higher than in most cosmetic operations. It is reduced by careful technique — small cannulas, avoiding the deep muscle and the large vessels, limiting the volume — but not eliminated. It is legitimate to decide the risk is not worth it.
Fat gives a natural feel and contours the donor areas, but volume is partly lost and the limit is how much fat you have. An implant gives predictable volume without a second area of surgery, at the cost of a foreign body and a higher risk of infection and displacement. Your own tissue distribution usually decides.
Side and rear views, in fitted clothing, let a surgeon judge projection and donor fat — and say honestly whether a transfer is possible. A coordinator replies with a plan and a written quote.
This page is general information, not medical advice. Suitability, technique and risks are decided in a consultation with a surgeon.
