A stem cell facelift is the injection of purported stem cells into the face to attempt to rejuvenate the facial tissues. This assumes that stem cells are actually being harvested (typically via liposuction of fat), isolated by some process, and injected in a way that the cells remain alive, all of which are large assumptions. There is no doubt that fat contains stem cells, but the ability to selectively remove them from the fat and then inject them while they remain alive is the, as yet, unproven question. This is a procedure that has a lot of hype attached to it and one should proceed with caution, in our opinion, whenever this happens in medicine.