  Hmm, that IS quite the ponderance - do they? Is it the same thing as eyebrow crud? Is that really facial dandruff but we just call it crud, crust, flakes because we don't want to admit that there is such a thing? Would Head and Shoulders come out with a new name? I mean, I guess you could still use it but it wouldn't REALLY be your head or your shoulders - maybe Face and Chest? I throw the chest out there because if you have facial dandruff, it's going to fall straight down (unless you are in a mighty fierce wind storm) in which case it would land on your chest.
Of course, if you are flat as a pancake, it would most likely land on your feet so maybe the name would be Face and Feet. Or, like any good marketing person would do, you create both, even though they are the same product, and sell them to people who fit each demographic.
But then we would have to look at others, like Face and Lap (for those who are in wheel chairs and such) and possibly Face and Ears, for those who are stuck on their back (because it would fall to the side, silly). Another ponderance - why, when cats barf up a hair ball, is it called a hair ball? I can tell you from YEARS of freakin' experience, it ain't no ball. A ball implies that it's a nice and neat little package that you simply pick up and toss in the nearest trash receptacle. No, the ones that I see coming out of my little beasts are long and turd like and surrounded by a puddle of whatever happened to be in their stomach. Ugh. They should be called something like "Hair Barf" or "Hair Turd", ya know? =) 
