This research, as reported by EurekAlert, sounds like it will be a major advance for the field of regenerative medicine if it pans out. "Stem cells found in adult skin retain their embryonic capability of making many types of cells. ... We think these stem cells are actually embryonic cells that go out into the skin during development and then stay in reservoirs in hair follicles." Remember that a number of equally promising developments in stem cell science over the past few years have turned out to be false alarms. It is worth following any research that promises readily available multipotent stem cells in adults, however - that is the key to efficient, low cost tissue engineering.