Online video shows Kim Kardashian receiving a so-called vampire facial, which involves separating the patient's blood and injecting platelets and stem cells into the face. "In theory, growth factors will thicken the skin's outer dermis, reduce fine lines and wrinkles, and provide some rejuvenation, but all of these cells in the skin are already bathed in blood and perfused with these growth factors," said Brigham and Women's Hospital dermatologist Joseph Merola.