Thanks for the great question! Fat transfer traditionally involves removing fat from one part of your body and injecting it into areas that need more volume—common examples include the face and buttocks. One of the key benefits of using your own fat is that it contains live stem cells, which may help improve skin texture and overall appearance. However, not everyone has enough fat available for transfer. In these cases, we now have allograft fat options—donor fat from another individual. In the U.S., there are currently two main FDA-approved products: 1. Renuva FDA Approved: 2021 Longevity: Reported to last up to 10 years Processing: The fat is processed to retain the extracellular matrix (ECM)—a structural framework that supports fat regeneration—but does not contain live cells Consistency: Very smooth, allowing for precise injection into facial or superficial fat layers Volume: Comes in small syringes (3cc), making it ideal for smaller treatment areas like the face or hands 2. Alloclae FDA Approved: 2025 Processing: Uses X-ray sterilization, preserving both the ECM and the cell wall - cellular components are removed, which may provide added regenerative benefits Texture: Firmer than Renuva—designed for use in larger-volume body areas, not the face Volume: Available in larger sizes (12.5cc and 25cc), making it more practical for body contouring Longevity: Still being studied, but early expectations suggest similar duration to Renuva—however there is a difference in processing - so the longevity may be the same, worse, or better. In summary: If you have enough of your own fat, it’s usually preferred because of the added skin-rejuvenating benefits. But for patients without sufficient donor fat, Renuva and Alloclae offer exciting alternatives, each with unique advantages depending on the treatment area and goals.