Facial fat grafting can produce scar tissue, firmness, or lumps, particularly if some of the transferred fat does not survive. However, having fat grafting does not automatically prevent a future facelift or make it significantly more difficult. The effect depends on where the fat was placed, the amount injected, and how the tissues healed. Significant scarring can make later surgery more involved. My reservations about facial fat grafting relate more to the unpredictability of fat survival, the potential for unevenness or overfilling, and the difficulty of correcting unwanted volume. It can be useful in appropriately selected patients, but I favor a more predictable approach. There is no blanket rule that you should never have more than one treatment. Some patients benefit from staged grafting, but additional sessions should have a clear purpose and follow an assessment of the healed result. Repeatedly adding volume is not a substitute for addressing tissue sagging. If you are considering a facelift, discuss that plan before undergoing further fat grafting. A surgeon who performs both procedures can evaluate your existing volume, any areas of firmness, and whether lifting, volume replacement, or a combination would best address your concerns.