What instrument is best to use in Brazilian Butt Lift fat grafting so fat will stay?

This is a great question, as I believe that the cannula plays an important role in cell survival.  I use the following: Extraction of fat- Use a 3mm cannula so that fat is extracted in small fragments. An added bonus is that it is easier to get smooth even liposuction results for the donor area (the part where fat is taken out).   Re-injection of fat into buttocks- Use a cannula with 2mm internal diameter and a smooth lumen so that cells are not damaged during the re-injection into the buttocks.Below is a reference to info about cannula size for the fat extraction part. Hope this helps!Ricardo L Rodriguez MD

      There are technical aspects to ensuring optimal survival, but this probably has less to do with a specific instrument.Kenneth Hughes, MDLos Angeles, CA

Too much has been written in the literature about  the technique and not enough about the art of fat placement. I would recommend that you seek a plastic surgeon who performs hundreds of these procedures, has great reviews and photos, and is an expert in this field to assure that you get the results you are looking for.