Full Integumentary System of the Head and Neck (Male Posterior View) Description
[Continued from above] . . . of the body that is most often exposed to sunlight, the elements, and environmental pollutants; thus, it is more prone to acne and to becoming dry or otherwise showing accumulated damage from these influences than the skin on the rest of the body.
The top and upper sides of the head are typically the single largest collection of hair on the human body. Facial hair includes the eyebrows and eyelashes; visible air also grows between the nose and upper lip and along the cheeks and lower edge of the jaw line and sometimes extends down the neck. This facial hair is typically somewhat thicker in men, although this can vary.