After I got to my first permanent base (Dow) I was allowed to grow a moustache if I kept it within the limits set in the regulations. As I was only shaving once a week at the time it took awhile to grow enough fuzz on my upper lip to have a moustache. When I first grew a moustache it was so blond that the picture on my ID looked like I had a fat lip. One of the black guys I worked with once suggested I use mascara on my moustache to make it show up better. I never put anything on it, just kept it trimmed according to the regs, although at times I pushed the envelope by letting it extend past the corners of my mouth.
As for the shaving bit, there were times when by Friday it would look like maybe I forgot to shave that morning. It took five days to get a Five-O-Clock shadow!! Sunday night I would shave and be good for another week.