I’ve been wondering about this for some time. I’d be inclined to think that they take fin, but they also have the cash to just hop into a doctors office if they notice any thinning. I wish Steve Carrell would do an AMA. I wanna know if his progression is the result of fin or multiple transplants.
Many of the celebrities I have worked on (movies, CEOs, politicians) will keep working their hair with additional hair transplants until they achieve their expectations. Many use the drug finasteride as well. A good doctor sets expectations with his patient prior to the first surgery.