While Dr. Kopelman believes Elon underwent one hair transplant, he also suggests that several years later, Musk may have had another procedure, receiving "anywhere from 2,500 to 3,500 grafts." ...

"I started practicing in 1984 and hair transplant surgery has changed completely since then too -- from large to small grafts," says Orentreich. "The large-graft technique was state-of-the-art ...