As it may be of interest to others, I am posting this again:
Yes, I have noticed my hair thinning some, and slightly receding at the temples. I noticed the first gray hairs when I was around 30, and my hair has very gradually, but steadily, continued to gray. I did not notice any particular acceleration in that process when I started "mega-dosing" [with daily Bowel Tolerance doses of ascorbic acid] at around age 44. Since I am only a few months short of my 65th birthday, I have always assumed this was all just caused from aging. Personally, neither of those "symptoms" particularly concerns me, so I have just ignored them.
I am wondering about your thought that "...most everyone in the mega-C camp tend to have thinning to balding heads and gray hair." Who are you comparing them with [and how are you going about the comparison]? Also, a modus operandi for this cause would somehow have to be linked to ascorbate [intake]. Any ideas [on how to do this]?