Yes, there are risks associated with the BBL procedure. Fat necrosis occurs when the injected fat is not adequately reabsorbed by the body and forms hard lumps in the treated area. A fat embolism occurs when an injection of fat goes into a blood vessel or vein instead of into muscle/fat tissue, which can lead to blockage of the vascular system or lungs. It is important to note that these risks can be minimized with proper pre-operative planning, selection, and placement of donor sites, and precise technique during the outpatient procedure performed by an experienced plastic surgeon.