One of the reasons that women are able to
wax their legs is that the hair growth is often much more sparse, resulting in less of a problem with terribly reddened skin (though it is still painful). The hairs on a man's face are dense, and often thicker than leg hairs, which would result in
tremendous pain, and unavoidable short term blotchy redness. It is for this reason that the majority of wax
aficionados do not wax their underarms.
There are, by the way,
depilatories meant for facial
hair removal for men. They can be found in the "ethnic" hair care section of most drugstores in larger cities, as it is a problem for African American men sometimes to
shave. Curly hair tends to bend back toward the
follicle and cause
ingrown hairs.