Which hormone is often linked to acne flare-ups?

Testosterone is a hormone that plays a significant role in the development of acne. It is an androgen, which means it is involved in the development of male traits and reproductive activity. In both men and women, testosterone stimulates the sebaceous glands in the skin to produce more oil (sebum). When there is an overproduction of sebum, it can clog pores, leading to the growth of acne-causing bacteria and resulting in inflammation and breakouts.

Additionally, fluctuations in testosterone levels, such as during puberty or hormonal changes, can contribute to increased oil production and subsequent acne flare-ups. Therefore, the link between testosterone and acne is well-established, making it the correct choice in this context.

While estrogen, cortisol, and progesterone can also influence skin health and may play roles in skin conditions, they are not primarily associated with the direct stimulation of sebum production leading to acne in the same way that testosterone is.