What is sexual hair?

Sexual hair refers to the coarse, pigmented hair that develops in specific areas of the body during puberty, commonly known as terminal hair. This type of hair typically grows in regions such as the underarms, pubic area, and, in males, on the face and chest. It is distinguished from finer hair, known as vellus hair, which is softer and covers most of the body before puberty.

Men experience a noticeable increase in the growth of terminal hair after puberty due to hormonal changes, particularly the influence of androgens like testosterone. This transition marks the development of secondary sexual characteristics.

While some types of hair grow during puberty for individuals of all genders, the defining aspect of sexual hair is its association with the hormonal changes that occur specifically during this developmental stage, particularly as seen in males. Thus, the answer correctly identifies that sexual hair pertains to the hair that men continue to grow after puberty, reflecting the growth of terminal hair in response to hormonal changes.