San Francisco - While formal studies have yet to be conducted, an emerging injection technique for facial-fat grafting seems to add volume to the aging face with long-lasting if not permanent results and without fear of allergic reactions. The technique, called fat autograft muscle injection (FAMI), appears loaded with potential benefits for physicians and patients, according to unpublished data compiled by Stephen H. Mandy, M.D. clinical professor of dermatology, University of Miami School of Medicine.