Which hormone is primarily responsible for increasing sebum production in teenagers?

The hormone primarily responsible for increasing sebum production in teenagers is androgen. Androgens are a group of hormones that include testosterone and others that promote the development of male characteristics, although they are present in both males and females. During puberty, increased levels of androgens lead to the enlargement of sebaceous (oil) glands in the skin, which results in heightened sebum production.

Sebum is the oily substance that helps to keep the skin lubricated, but excessive sebum can contribute to acne and other skin conditions that are commonly experienced by teenagers. While testosterone, an androgen, does play a significant role in this process, it is classified under androgens. Recognizing that androgens broadly encompass various hormones that influence oil production helps clarify why this choice is the most accurate in the context of the question.

Estrogen and progesterone, while important in many physiological processes, do not have the same direct effect on stimulating sebum production during puberty as androgens do. Therefore, the focus on androgens makes it clear why this is the correct answer.