Yes and no? Wigs do exist, Which covers the yes portion, but I know that's not what you're asking. So onto the No;
Leprechauns are, 99% of the time, an entirely male species. Something something, Homosexual reproduction won the evolutionary race. BUT! there's a 1% of the time where females are hatched. It's got a lot to do with genes and sometimes egg temperature. The chromosomes that lead to a female tadpole are also fairly close to the ones that lead to hair growth. (Some males do grow hair! It's not entirely uncommon! None of these fucks have the genes for it, that's all!)