One professor at Johns Hopkins told Daily Beast that she doubts Trump underwent scalp reduction surgery, but that he could have had a hair transplant.

“If you had a large bald area, you’d have to have several procedures in a row before you actually achieved your goal to cut out the bald spot. You can’t do it in one fell swoop,” Dr. Lisa Ishii said. “It’s such an outdated procedure. It’s possible that he had a hair transplant.”