Lee, the hair on half of my face, including half my moustache as well and a neat rectangualr area on the back of my head fell out during radiation.

It took about 6 months for it to "stabilize". Most of the hair on my head came back, finer than before. My facial hair didn't expect for my moustache and a few small patches on my cheeks. Intersting thing; my moustache was very "salt and pepper" colored pre-treatment...now the hair on the radiation side is as black as it was when I was 20 years old!

My wife called me "two-tone" for a while...she's over that now, thank goodness.
Wayne