Lumps are a possible complication after fat transfer. When fat is injected into the body and the cells are not supplied with enough oxygen and nutritions, the fat cells can become firmer and lumps can appear. However, the amount of fat for the full face fat transfer is not a huge amount to cause lumps. If you have lumps, don’t worry. Generally, the lumps dissolve as the body tissues soften through the recovery process a few months after the surgery.