Hormonal Acne: Root Causes, Hormone Testing, and Evidence-Based Treatment

Hormonal acne is acne driven mainly by androgens such as testosterone and dihydrotestosterone (DHT), often amplified by high insulin and IGF-1, and it usually shows as deep, tender breakouts on the jawline and chin that flare before a period. Treatment works best when it targets that hormonal driver: in the SAFA trial (Santer et al., BMJ, 2023, n=410), women taking spironolactone reported better acne quality of life than women on placebo at 12 weeks, with larger gains by 24 weeks.

Hormonal acne is one of the most commonly mismanaged conditions in dermatology. Patients spend years on topical antibiotics and over-the-counter products that address the surface lesions but not the underlying driver. When the driver is hormonal, topical management alone is a temporary measure. Understanding what is actually happening hormonally changes both the treatment decisions and the realistic expectations for resolution.

Four things shape how hormonal acne is managed: the androgen-sebum pathway, the insulin connection that gets less attention but is equally important, how hormones are tested properly, and which treatments have real evidence. For the broader picture of acne management, see our Acne guide.

The Androgen-Sebum Pathway

Sebaceous glands are sensitive to androgens, particularly dihydrotestosterone (DHT), which is produced locally in skin tissue from testosterone via the enzyme 5-alpha reductase (5AR). DHT binds to androgen receptors in sebocytes (sebaceous gland cells) and upregulates sebum production. Excess sebum, combined with abnormal keratinocyte proliferation and Cutibacterium acnes colonization, drives comedone formation and inflammatory lesions.

Importantly, total testosterone levels can be completely normal in women with hormonal acne. The issue is often end-organ sensitivity: sebaceous glands that are hyperresponsive to normal androgen levels because of high local 5AR activity, high androgen receptor density, or elevated DHEA-S driving local DHT conversion. This explains why measuring testosterone alone is insufficient and why patients with “normal” hormone panels can still have hormonally driven acne.

PCOS and Hormonal Acne

Polycystic ovary syndrome (PCOS) is the most common endocrine disorder in women of reproductive age, affecting 6-12% of this population. It is characterized by hyperandrogenism (elevated androgens or clinical signs thereof), ovulatory dysfunction, and polycystic ovarian morphology. Acne, hirsutism, and alopecia are the cardinal dermatological features.

Not all women with hormonal acne have PCOS, and not all PCOS patients have severe acne. But PCOS is worth specifically considering when acne is accompanied by irregular periods, hirsutism, central weight gain, or fertility concerns. A 2011 meta-analysis in the European Journal of Obstetrics and Gynecology (22 studies) found that around 34% of women with PCOS listed acne as a primary complaint, and acne was more severe and more treatment-resistant in PCOS patients than in women with acne without PCOS.

PCOS is diagnosed with the Rotterdam criteria, which require two of three features: hyperandrogenism, irregular or absent ovulation, and polycystic ovaries on ultrasound. The 2023 International Evidence-based Guideline for PCOS (Teede et al., led by Monash University) keeps that framework and treats acne as a sign of clinical hyperandrogenism. The metabolic side of the condition is covered in our post on PCOS and insulin resistance.

The Insulin-IGF-1 Connection

Insulin and insulin-like growth factor 1 (IGF-1) are independent drivers of hormonal acne, operating in parallel with the androgen pathway. High insulin levels, driven by high glycemic diets, insulin resistance, or PCOS-related insulin dysregulation, stimulate the liver to produce IGF-1. Both insulin and IGF-1 directly stimulate sebocyte proliferation and sebum synthesis. They also suppress sex hormone-binding globulin (SHBG), which increases free (biologically active) testosterone circulating in the blood.

This creates a vicious cycle in PCOS patients: elevated insulin reduces SHBG, raising free testosterone, which worsens hyperandrogenism, which worsens insulin resistance via effects on adipose tissue and muscle. Breaking the insulin component of this cycle is often as important as targeting androgens directly.

Kwon et al. (2012, Acta Dermato-Venereologica, RCT, n=32) randomized acne patients to a low glycemic load diet versus a conventional diet for 10 weeks. The low glycemic group showed significantly greater reductions in total lesion count (51% vs 31%) and non-inflammatory lesion count, along with reductions in free androgen index and IGF-1. This was a small trial but the biological mechanism is well-supported, and the dietary intervention is low-risk.

An earlier trial points the same way. Smith et al. (2007, American Journal of Clinical Nutrition) put young men with acne on a low glycemic load diet for 12 weeks and saw fewer lesions and better insulin sensitivity than in the control group. Both trials are small, so diet is best treated as a supporting measure rather than a stand-alone treatment for moderate or severe acne.

How to Recognize Hormonal Acne: Clinical Features

The distribution pattern is the most reliable clinical marker. Hormonal acne concentrates on the lower face: jawline, chin, and perioral area. It often spares the forehead and nose, which are more typical of seborrheic or comedonal acne. Lesions are typically deep, cystic, and tender, rather than superficial blackheads or whiteheads. In women, a consistent premenstrual flare pattern (worsening in the week before menstruation) strongly suggests hormonal driving.

In men, hormonal acne is less well characterized but often involves the back and shoulders alongside the face, and may be associated with anabolic steroid use, which dramatically amplifies androgenic signaling in sebaceous tissue.

Signs that point to a hormonal driver

• Breakouts that start or return in your twenties, thirties or forties rather than fading after the teenage years.
• Deep, sore nodules along the jawline, chin and neck that last a week or more.
• A monthly flare in the week before a period.
• Other signs of androgen excess, such as irregular periods, excess facial or body hair (hirsutism) or thinning scalp hair.
• Acne that clears on topical treatment or antibiotics and returns once they stop.

Does Hormonal Acne Look Different in Men, Teens and Perimenopause?

Hormonal acne follows the same androgen and insulin biology at every age, but the triggers and treatment options differ. Adult female acne, which often starts or persists after age 25, is the pattern most often called hormonal acne.

Hormonal acne in men

Men do get hormonal acne, most often when androgen levels are pushed above their natural range. Anabolic steroids and testosterone replacement therapy (TRT) both list acne as a known side effect, as our post on TRT side effects explains. Spironolactone and combined oral contraceptives are not used in men because of feminizing effects such as breast enlargement, so treatment relies on retinoids, benzoyl peroxide, oral antibiotics, isotretinoin and topical clascoterone.

Acne in perimenopause and menopause

Some women develop acne for the first time in their forties. As estrogen falls during perimenopause, the relative effect of androgens on the skin rises, even when androgen levels themselves are unchanged. A new jawline breakout pattern at this stage is worth raising with a clinician who also manages menopause, because hormone therapy choices and acne treatment can affect each other.

Hormone Testing: What to Measure and When

Routine hormone testing for all acne patients is not necessary. But testing is worthwhile when acne is moderate-to-severe, treatment-resistant, associated with other signs of androgen excess, or when the patient wants to understand the hormonal picture before committing to pharmaceutical treatment.

Useful baseline tests include: total and free testosterone, DHEA-S (dehydroepiandrosterone sulfate), LH and FSH (and their ratio, which is elevated in PCOS), fasting insulin and fasting glucose (to calculate HOMA-IR), sex hormone-binding globulin, and in some cases prolactin. Thyroid function (TSH, free T4) is worth including because hypothyroidism can worsen acne via IGF-1 pathway interactions.

Testing should be done in the early follicular phase of the menstrual cycle (days 2-5) for most reproductive hormones, as values fluctuate significantly across the cycle. Oral contraceptive use substantially alters baseline hormone levels and ideally testing is done before initiating or after a washout period if feasible.

Evidence-Based Treatments

Hormonal acne treatment works on three levers: blocking androgen action at the skin, lowering androgen and insulin signaling at the source, and normalizing the follicle with retinoids. The 2024 American Academy of Dermatology (AAD) guidelines of care for acne (Reynolds et al., Journal of the American Academy of Dermatology) give conditional recommendations for spironolactone, combined oral contraceptives and topical clascoterone, and strong recommendations for topical retinoids, benzoyl peroxide and isotretinoin. Our acne treatment guide sets those options alongside the non-hormonal ones.

Spironolactone

Spironolactone is an aldosterone antagonist that also blocks androgen receptors and inhibits 5-alpha reductase. At doses of 50-200mg daily, it is consistently effective for hormonal acne in women, and it is prescribed off label because the FDA has not approved it for acne. The largest placebo-controlled trial, SAFA (Santer et al., BMJ, 2023), randomized 410 women with persistent facial acne to spironolactone (50mg daily, rising to 100mg) or placebo; the spironolactone group reported better acne quality of life at 12 weeks and a larger difference at 24 weeks.

The most common side effects are irregular menstrual bleeding and breast tenderness, which often resolve after the first few cycles. Hyperkalemia is a theoretical risk that is clinically relevant primarily in patients with renal impairment or those taking ACE inhibitors. In young healthy women, routine potassium monitoring is less necessary than older prescribing guidelines suggested; Plovanich et al. (2015, JAMA Dermatology) found hyperkalemia rates in young women taking spironolactone for acne matched the background rate. Spironolactone is teratogenic and requires effective contraception in women of reproductive age.

Oral Contraceptives

Combined oral contraceptives (estrogen plus progestin) reduce hormonal acne by suppressing ovarian androgen production and increasing SHBG, which reduces free testosterone. Four OCPs are FDA-approved specifically for acne: norgestimate/ethinyl estradiol, norethindrone acetate/ethinyl estradiol, drospirenone/ethinyl estradiol, and drospirenone/ethinyl estradiol/levomefolate.

Progestin choice matters considerably. Progestins with high androgenic activity (norgestrel, levonorgestrel, norethindrone at high doses) can worsen acne. Low-androgenic or anti-androgenic progestins (drospirenone, dienogest, cyproterone acetate) are preferable for acne management, although cyproterone acetate is not available in the United States. Drospirenone in particular has demonstrated anti-mineralocorticoid and anti-androgenic properties that make it a strong progestin choice for acne-prone patients.

Combined pills are not suitable for everyone. Smokers over 35, people with migraine with aura and people with a history of blood clots are usually steered away from estrogen-containing contraception, so the prescriber reviews those risks first.

Clascoterone Cream

Clascoterone 1% cream is a topical androgen receptor inhibitor that the FDA approved in 2020 for acne in patients aged 12 and older. It blocks DHT at the sebaceous gland with little whole-body hormone effect, so men and teenagers can use it. Two phase 3 trials (Hebert et al., JAMA Dermatology, 2020) found more treatment success at 12 weeks than with a vehicle cream. It is often expensive and insurance coverage varies, so ask about cost before filling the prescription.

Spearmint Tea

Spearmint has anti-androgenic properties. Akdogan et al. (2007, Phytotherapy Research, n=21) found that women with hirsutism who drank two cups of spearmint tea daily for 5 days had significantly reduced free testosterone levels with no change in total testosterone, consistent with SHBG elevation. A follow-up RCT by Grant (2010, Phytotherapy Research, n=42) found that spearmint tea twice daily for 30 days significantly reduced free and total testosterone in women with PCOS and hirsutism.

These studies measured hormone levels in hirsutism patients rather than acne severity directly, and sample sizes are small. But the mechanism is biologically plausible and the intervention is low risk for most people. Spearmint tea twice daily is a reasonable adjunct for women with mild hormonal acne who prefer to start with non-pharmaceutical approaches.

DIM (Diindolylmethane)

DIM is a compound derived from cruciferous vegetables that promotes the metabolism of estrogen toward less potent 2-hydroxy metabolites and may also modulate androgen metabolism. It is widely used in the integrative medicine world for hormonal acne, particularly in women with estrogen-dominant hormonal patterns.

The clinical evidence in acne is limited to mechanistic studies and case reports. One small pilot study (Zeligs 2001, unpublished) reported improvement in acne with DIM supplementation. DIM is well-tolerated at standard doses (100-200mg daily) but can cause dark urine (from enhanced estrogen metabolism byproducts), which is harmless but alarming to patients if they are not warned. Supplements are not reviewed by the FDA for effectiveness before sale, so product quality also varies.

Zinc

Zinc inhibits 5-alpha reductase activity and has direct anti-inflammatory effects on Cutibacterium acnes-driven inflammation. Multiple RCTs have compared oral zinc (as gluconate or sulfate, 30-90mg elemental zinc daily) to placebo or antibiotics. A 2012 meta-analysis in the Journal of Drugs in Dermatology (13 trials) found that zinc significantly reduced acne lesion counts, with effect sizes smaller than oral antibiotics but clinically meaningful. Zinc is particularly useful as an antibiotic-sparing option or as an adjunct to other treatments.

Low Glycemic Diet

As discussed in the insulin-IGF-1 section, reducing dietary glycemic load consistently reduces acne severity in RCT settings. Practically, this means limiting white bread, white rice, sugary beverages, processed snacks, and other high glycemic foods, and replacing them with whole grains, legumes, vegetables, and protein. Dairy, particularly skim milk, has independent associations with acne severity in observational studies, possibly through IGF-1 content and leucine-driven mTORC1 activation. Trialing dairy reduction is a reasonable step for patients who have not found dietary patterns relevant to their acne.

Metformin for PCOS-Related Acne

Metformin is a diabetes medicine that lowers insulin levels, and it is used off label for acne in women with PCOS and insulin resistance. By lowering insulin, it can raise SHBG and reduce ovarian androgen output. The evidence for acne on its own is modest, so metformin is usually added to spironolactone or a combined pill rather than used alone. Some clinics also offer inositol for the same insulin pathway, which our post on inositol for PCOS covers in detail.

Retinoids

Topical retinoids (tretinoin, adapalene) and oral isotretinoin address the keratinocyte abnormality and sebum overproduction that hormonal signaling drives. Isotretinoin at standard doses (0.5-1mg/kg/day) reduces sebaceous gland size by up to 90% and is the most effective single treatment for severe hormonal acne. It does not address the hormonal driver directly, which is why acne can recur after isotretinoin in patients with ongoing hormonal triggers. In women with PCOS-driven acne, combining isotretinoin with hormonal treatment (spironolactone or OCP) after the isotretinoin course often produces more durable remission.

Isotretinoin causes severe birth defects, so in the United States it is prescribed only through the FDA's iPLEDGE program, which requires monthly pregnancy tests and two forms of contraception for patients who can become pregnant. Our post on severe acne treatment explains when isotretinoin becomes the first choice.

Treatment Evidence Summary

The grades in this table are an editorial summary of trial quality and size. They are not the AAD's own recommendation strengths, which rate spironolactone, combined oral contraceptives and clascoterone as conditional and isotretinoin as strong.

How Long Does Hormonal Acne Treatment Take to Work?

Most hormonal acne treatments need about three months before their effect can be judged fairly, because sebaceous gland activity changes slowly. The timelines below come from the trials named earlier.

Hormonal treatment controls acne while it is taken and does not permanently change the underlying hormone pattern, so acne often returns after stopping. Plan the long-term approach with the prescriber from the start.

When to See an Endocrinologist

Most hormonal acne in women can be managed by a dermatologist or a GP with dermatology experience. An endocrinologist referral is appropriate when: testosterone levels are significantly elevated (above 1.5-2x the upper limit of normal), DHEA-S is markedly elevated (suggesting adrenal pathology), there are signs of Cushing syndrome, or acne fails to respond to standard hormonal treatments and testing suggests a primary endocrine disorder.

PCOS evaluation ideally involves both a dermatologist (for skin manifestations) and a gynecologist or endocrinologist (for the metabolic and reproductive picture). Treating acne in PCOS without addressing insulin resistance and anovulation produces partial results. The insulin resistance itself responds well to lifestyle intervention (low glycemic diet, exercise) and in some cases to metformin, which also improves acne in PCOS patients by reducing androgen production through insulin normalization.

Sudden, rapidly worsening acne together with a deepening voice, fast-growing body hair or other signs of virilization calls for prompt medical review, because an androgen-secreting tumor of the ovary or adrenal gland, while rare, needs to be ruled out.

If you have moderate-to-severe acne on the jawline and chin, particularly if it tracks with your cycle or has not responded to standard topical treatment, the hormonal workup described above is worth doing. Understanding your specific hormonal pattern means treatments can be targeted rather than generic, which substantially improves the odds of lasting improvement.

Who Treats Hormonal Acne, and How to Find a Clinic

Hormonal acne is treated by board-certified dermatologists, gynecologists, endocrinologists and primary care physicians, and also by integrative and functional medicine practices that focus on hormone testing, diet and supplements. Prescription treatments such as spironolactone, combined pills and isotretinoin are often covered by insurance, while extended hormone panels, supplement protocols and functional medicine visits are commonly cash pay. Ask before booking which tests are included, who reads them, and whether the clinic can prescribe or will refer you.

Regenerated.com lists clinics that offer acne treatment across the United States, and the directory is free for patients. Listing order is not paid ranking, Featured slots are labeled and capped, and Verified means the clinic completed credential checks rather than paid for placement. Inclusion in the directory is not an endorsement, and the guide to Featured, Verified and organic listings explains each label.

Frequently asked questions

What does hormonal acne look like?

Hormonal acne usually looks like deep, tender red bumps and cysts along the jawline, chin, lower cheeks and neck, rather than blackheads across the forehead and nose. The lesions often sit under the skin for a week or longer and leave dark marks as they heal. In women the pattern tends to flare in the week before a period, and in adults it often begins or returns after age 25, well past the teenage years.

How long does spironolactone take to work for acne?

Spironolactone usually takes about three months to show a clear effect on hormonal acne, and the benefit keeps building after that. In the SAFA trial (Santer et al., BMJ, 2023), women taking spironolactone reported better acne quality of life than the placebo group at 12 weeks, and the difference was larger at 24 weeks. Dermatologists generally suggest staying on a steady dose for at least three months before judging whether it works.

Can hormonal acne be treated without birth control?

Hormonal acne can be treated without birth control pills. Spironolactone, topical clascoterone, topical retinoids, benzoyl peroxide, oral antibiotics and isotretinoin all work without a combined pill, and a low glycemic load diet, zinc and spearmint tea are lower-evidence add-ons. Spironolactone and isotretinoin both carry pregnancy risks, so people who could become pregnant still need reliable contraception of some kind while taking them, which a prescriber will discuss before starting.

What blood tests are used for hormonal acne?

Blood tests for hormonal acne usually include total and free testosterone, DHEA-S, SHBG, LH and FSH, fasting insulin and glucose, and sometimes prolactin and thyroid function (TSH, free T4). Testing is most useful when acne is moderate to severe, does not respond to treatment, or comes with irregular periods or excess hair growth. Reproductive hormones are best drawn on days 2 to 5 of the menstrual cycle, ideally before starting a contraceptive pill.

Do men get hormonal acne?

Men do get hormonal acne, especially when androgen levels rise because of anabolic steroids or testosterone replacement therapy. The breakouts often spread to the back, chest and shoulders as well as the face. Men are not treated with spironolactone or combined pills because of feminizing side effects, so options center on topical retinoids, benzoyl peroxide, clascoterone cream, oral antibiotics and isotretinoin, plus a review of any testosterone dose with the prescribing clinician.

Does diet help hormonal acne?

Diet can help hormonal acne, mainly by lowering insulin and IGF-1. Small randomized trials by Smith et al. (2007) and Kwon et al. (2012) found that a low glycemic load diet reduced acne lesions over 10 to 12 weeks compared with a usual diet. Skim milk and other dairy are linked with more acne in observational studies, so a trial reduction is reasonable. Diet works best alongside medical treatment for moderate or severe acne, not instead of it.