Regarding the shaving part. Area of the heaviest concentration of radiation, still yet to have hair grow back. Mustache came back after a while. However, since my beard and mustache were mostly grey, shaving them off took about 10 years off my looks.

Buy an electric razor though, the whole left side of my face is numb, and I don't think it's a good idea to try and shave with a blade with a numb face. Could cut half your face off and not feel it.

SCC Tongue, stage IV diagnosed Sept, 2002, 1st radical neck dissection left side in Sept, followed by RAD/Chemo. Discovered spread to right side nodes March 2003, second radical neck dissection April, followed by more RAD/Chemo.