Is it safe to have liposuction (thighs and calves), 600cc bbl, 500cc breast fat transfer & face fat graft all in one procedure?

Hello,
First of all, it's important to understand that every surgery carries some risk, and the extent of that risk depends significantly on individual patient factors. In other words, not every risk applies equally to every patient. A thorough evaluation of the patient's overall condition is essential to determine the realistic and personalized risk profile.
Regarding the procedures you mentioned — liposuction of the flanks and thighs, BBL (Brazilian Butt Lift), fat transfer to the breasts, and nanofat injection to the face — these combined procedures are not expected to take 12 hours. In my experience, the average duration is around 3.5 to 4 hours. It’s certainly not a 12-hour surgery.
If you'd like a more detailed and personalized assessment, you’re welcome to share your photos. This would help us evaluate your case more precisely.
As for liposuction and BBL, yes, there are known risks — perhaps you’ve already read about them. One of the main concerns is fat embolism, particularly when fat is injected into the muscle layer. We now know that this risk is significantly reduced when the injection is done in the subcutaneous layer (between the skin and muscle), especially when using ultrasound guidance.
So, if you are considering a BBL, I strongly recommend that it be performed as a "safe BBL" under ultrasound guidance, with fat injected only in the appropriate subcutaneous plane to minimize risks.
Regarding fat transfer to the breasts, it’s important to note that the results are less predictable. While it can be useful for correcting minor asymmetries, it’s not ideal as a primary method for breast enlargement, because around 30–40% of the transferred fat may be reabsorbed within six months, which can lead to uneven or unsatisfactory results.
On the other hand, nanofat injections combined with microneedling or micro-MD treatments for scars or stretch marks on the face can yield good results, and I consider this a beneficial option in appropriate patients.
In summary, I do not expect the full procedure to take 12 hours — it should be shorter. Still, it’s crucial to have a detailed conversation with your surgeon, especially about the safety of the BBL procedure. When done properly — using ultrasound, injecting in the correct plane, and following current safety protocols — BBL can be performed safely.

Combining procedures is common and considered safe but there is a limit. Generally it is recommended that elective plastic surgery be limited to six hours or less of surgical time. What you are considering is double that and would not be advisable for your safety or to ensure optimal results.

When an operation is prolonged for more than 8 hours, it can place significant stress on your body. This increased stress may lead to a lower survival rate of the fat grafts, especially for procedures like fat transfer to the face or body. For your safety and to optimize results—particularly for fat grafting—I recommend separating the procedures into different sessions rather than doing everything at once.