Shy people might get up the nerve to ask someone out on a date. Quiet students may become outspoken. Grades could improve. They may seek jobs. Each follicle contains a tiny hair and multilobed sebaceous glands.
Sebaceous glands get their name from the oily substance they produce - sebum.
Under normal circumstances, sebum travels up the hair follicle and out to the skin's surface. However, in acne, sebum is trapped within the follicle. Red, swollen, pus-filled lesions are called papules, nodules, and pustules. Acne usually begins when the body starts to produce the hormones called androgens. Androgens cause the sebaceous gland to enlarge, and this is normal.