Question

Why boys have mustache on their face but girls don't have?

Answer 1

As children, both boys and girls have light, soft body hair called vellus hair. When puberty kicks in, things change.

Hormones called androgens, which are present in both sexes, stimulate vellus hair to darken and coarsen. The armpit and pubic areas are particularly sensitive to testosterone and other androgens, which is why both men and women grow dark hair in those regions after puberty

Which is not present in women