“…Advantages of using synthetic products (i.e., polydimethylsiloxane elastomer implant VoxImplant ® , Bioplasty BV, Geleen, The Netherlands, calcium hydroxylapatite Radiesse ® , Bioform Medical, San Mateo, CA, USA, hyaluronic acid) include immediate availability and an outpatient clinic setting [ 20 , 28 , 29 , 30 ], but certain disadvantages limit their use. Among these, chronic inflammation and granuloma formation is associated with the use of non-resorbable biomaterials, particularly polydimethylsiloxane, and the rapid resorption rate of hyaluronic acid, broken down by hyaluronidase enzyme, requires that the procedure be repeated multiple times, with up to six injections over 18 months [ 20 ]. The advantages of using adipose tissue over other options include greater biocompatibility, no immune response, long-lasting results, and regenerative properties.…”