Androgens are the primary hormones behind acne. Specifically, a potent form of testosterone called dihydrotestosterone (DHT) drives oil production in the skin’s sebaceous glands, and when androgen levels rise or become disproportionate to other hormones, breakouts follow. But androgens aren’t the only players. Insulin, stress hormones, and the natural fluctuations of the menstrual cycle all feed into the same pathway, making hormonal acne a condition with several interconnected triggers rather than a single cause.
How Androgens Trigger Breakouts
Your skin’s oil glands have androgen receptors built into their cells. When DHT binds to these receptors, it enters the cell nucleus and switches on a process that ramps up oil (sebum) production. The glands swell with fat droplets, eventually bursting open to release their oily contents into the pore. When too much sebum is produced, it mixes with dead skin cells and clogs the pore, creating the environment where acne-causing bacteria thrive.
The link between androgens and acne is so direct that people born without functioning androgen receptors do not produce sebum and do not develop acne at all. This is why acne typically appears at puberty, when androgen levels surge for the first time, and why it can resurface later in life whenever the hormonal balance shifts.
Both men and women produce androgens, though in different amounts. In women, the ovaries and adrenal glands are the main sources, while the skin itself can also convert weaker hormones into DHT locally. This means your blood tests could look relatively normal while your skin is still overreacting to androgens produced right at the oil gland.
Insulin and IGF-1 Amplify the Problem
Insulin does far more than regulate blood sugar. It acts as a booster for the entire androgen system. At the pituitary gland, insulin amplifies signals that stimulate hormone production. At the ovaries and adrenal glands, it directly increases androgen output. In the liver, it suppresses production of sex hormone binding globulin (SHBG), a protein that normally binds to testosterone and keeps it inactive. When SHBG drops, more free testosterone circulates and reaches the skin.
Insulin-like growth factor 1 (IGF-1) works alongside insulin to stimulate both oil production and the rapid turnover of skin cells that clogs pores. This is why diet can visibly affect acne in some people. Dairy consumption has been linked to higher acne frequency and severity because milk naturally contains compounds that elevate insulin and IGF-1 signaling. High-glycemic foods, those that spike blood sugar quickly, trigger the same cascade.
People with insulin resistance are particularly vulnerable. When cells stop responding efficiently to insulin, the body produces more of it to compensate, which in turn pushes androgen levels higher. This overlap between metabolic health and skin health explains why acne sometimes improves with dietary changes that stabilize blood sugar.
Stress Hormones and Skin Oil
Stress doesn’t just make existing acne feel worse. It creates a measurable hormonal shift in the skin itself. Corticotropin-releasing hormone (CRH), one of the body’s primary stress signals, is expressed at much higher levels in the oil glands of acne-affected skin compared to clear skin. CRH stimulates sebum production and also activates an enzyme that converts weaker hormones into active androgens right at the gland.
Cortisol, the downstream stress hormone most people are familiar with, promotes fat production in skin cells through a similar receptor pathway. The result is a double hit: stress increases oil output directly while also boosting local androgen activity. This is the biological explanation for the “stress breakout” that many people notice during high-pressure periods at work, during exams, or after poor sleep.
PCOS and Persistent Acne in Women
Polycystic ovary syndrome is one of the most common hormonal conditions linked to adult acne in women. About 42% of adult women with PCOS experience acne, compared to roughly 17% of adult women without the condition. PCOS involves elevated androgen levels alongside irregular ovulation, and it often comes with insulin resistance, combining two of the major acne-driving pathways.
Acne from PCOS tends to appear on the lower face, jawline, chest, and upper back. It often persists well past the teenage years and resists typical over-the-counter treatments. If you’re dealing with stubborn adult acne alongside irregular periods, excess hair growth on the face or body, or thinning hair on the scalp, these patterns together suggest androgen excess worth investigating. Blood work typically includes total and free testosterone along with DHEA-S, an androgen precursor made by the adrenal glands.
Menstrual Cycle Timing
Many women notice their skin worsens in a predictable pattern each month, and the hormonal explanation is straightforward. After ovulation, during the luteal phase (roughly days 15 through 28), progesterone rises. This causes mild swelling in the skin that can compress pores shut, trapping oil inside. As both progesterone and estrogen drop in the days just before menstruation, androgen levels become proportionally more dominant. That relative androgen excess triggers a burst of oil production at exactly the time pores are most likely to be blocked.
This is why premenstrual breakouts tend to cluster along the jawline and chin, areas where oil glands are especially dense with androgen receptors. The breakouts typically appear a few days before your period starts and may take one to two weeks to fully resolve before the next cycle begins the pattern again.
How Hormonal Acne Is Treated
Because hormonal acne starts beneath the skin’s surface, topical treatments alone often aren’t enough. The most effective approaches target the hormonal drivers directly.
Combination Birth Control
Estrogen-containing birth control pills work by reducing the amount of free testosterone circulating in the body. The estrogen component is the active ingredient against acne, which is why progestin-only methods (the shot, implants, hormonal IUDs, and the minipill) don’t have the same benefit and can sometimes make breakouts worse. Four combination pills have FDA approval specifically for acne treatment: Yaz, Beyaz, Estrostep FE, and Ortho Tri-Cyclen.
Anti-Androgen Medications
Spironolactone is the most commonly prescribed anti-androgen for acne in women. It blocks androgen receptors in the skin, reducing oil production at its source. Treatment typically starts at a low dose and increases gradually over several weeks. Improvement often takes three months to become visible, with full results closer to six months. If nothing has changed by three months, the medication is generally stopped. Spironolactone is not used in men because of its effects on male hormone balance.
Insulin-Focused Strategies
For people whose acne is tied to insulin resistance, reducing insulin levels can have a noticeable effect on the skin. This might involve dietary shifts toward lower-glycemic foods, reducing dairy intake, or in some cases medication that improves insulin sensitivity. These changes lower androgen production indirectly by removing the metabolic signal that amplifies it.
Recognizing Hormonal Acne
Not all acne is hormonal, and the distinction matters because it changes what treatments will actually work. Hormonal acne has a few distinguishing features. It tends to appear along the jawline, chin, and lower cheeks rather than across the forehead and nose. The lesions are often deep, painful cysts rather than surface-level whiteheads or blackheads. In women, it follows a cyclical pattern tied to menstruation, or it persists stubbornly into the 20s, 30s, and beyond.
If your breakouts match this profile, especially if they’re accompanied by other signs of androgen excess like oily skin that worsened in adulthood, irregular periods, or hair changes, the underlying cause is likely hormonal rather than bacterial or related to skincare habits. Addressing the hormone imbalance, rather than just treating the skin’s surface, is what ultimately clears the cycle.