Before puberty, the scalp carries a mixture of short vellus-like hairs and longer terminal hairs, together with various 'in-between' hairs. After puberty, in both sexes, most of the scalp hairs are terminal hairs. These hairs are thicker in diameter than the childhood hairs, especially in dark-haired people.
At puberty, terminal hairs begin to appear in the armpits, groins and legs, and also (in males) on the chin, chest and forearms. How much body hair you develop is genetically determined (that is, it is inherited from your parents).
At puberty, terminal hairs begin to appear in the armpits, groins and legs, and also (in males) on the chin, chest and forearms. How much body hair you develop is genetically determined (that is, it is inherited from your parents).