I gotta disagree in that I really think minoxidil 5% is producing something for me both at my hairline and on both temples, and already at the 1.5 month mark. I understand that in theory or typically this might not be the case for most people. But I don't think it would hurt the guy to try it in the temple areas/hairline, do you? I don't want to give advice that would worsen his or anybody's case and cause a shed. I am just speaking from personal experience.
Tonight I am going to try to remember to take pictures with my digital camera of what I am observing at my temples, and post them on my site. I think my digital camera can take close-ups, but I have to figure out how. Stay tuned.
But tell him not to freak out about it. Tell him to read up on it, check out the rogaine website and this website, as there are somewhat calming and encouraging videos to view, etc. Might help him.
But I strongly suggest the big three- Nizoral shampoo, minoxidil 5%, and propecia/proscar 1/4. Does male pattern baldness run in his family? I was under belief of the myth that it is only from your mother's side, else I would have taken measures to prevent it much earlier. Yep, I'm a moron!
Good luck.