[3] The labia majora after puberty may become of a darker color than the skin outside them and grow pubic hair on their external surface.

Each labium majus has two surfaces, an outer, pigmented and covered with strong, pubic hair; and an inner, smooth and beset with large sebaceous follicles.

After puberty, the clitoral hood and the labia minora can protrude into the pudendal cleft to a variable degree.

[7] The labia majora are thicker in front, and form the anterior labial commissure where they meet below the mons pubis.

[9] Primates besides humans that always have visible labia majora are bonobos, strepsirrhines, tarsiers, cebid monkeys, and gibbons.

[10][11][12] In non-primate female mammals, the labia majora are absent since the labioscrotal swellings have disappeared as a fetus.