Acne has its roots in the male hormones known as androgens. When androgens, which include the hormone testosterone, overstimulate the skin's sebaceous glands, those glands can produce too much of the oil known as sebum. Extra sebum can clog your hair follicles and pores, allowing bacteria to take up residence.
Teenagers from both sexes commonly get acne because their hormones fluctuate as they enter and proceed through puberty.
Androgen levels tend to settle down by the time you're in your early 20s, but if they rise or fluctuate later, you can get acne again.
