HVP stands for \\u201chigh-volume Precision\\u201d and is a branded way of performing fat transfer. This system is a closed system, keeping the fat safe from possible exposure to bacteria in the air. The HVP system also offers better filtration and concentration of fat, which has been shown in clinical studies to create better fat survival rates in fat transfer. Finally, the HVP re-injection system is the only system to allow the doctor to measure the pressure in the area he/she is injecting the fat into. This is important, as cramming too many fat cells into the area will cause them to squish each other and die. When you see doctors who have fat squirting out where it has been injected, it is because they have injected too much fat. Death of the fat cells leads to seromas and hematomas, serious complications that can create terrible deformities as they heal.