

Genes.
Far Eastern Asians generally have less body hair. Not just men, not just facial.
Other people do too - the reason I gave up growing a beard. Can’t get beyond the scraggly phase.
More reading:
many of the distinguishing features of East-Asian people have recently been linked to a single gene mutation.
edit: Far Eastern, not all Asians.












No to both. It’s tricky, talking about these things, because the spectre of racism looms, but it’s a real thing nonetheless. See my answer.
It’s not restricted to males though.