Hormonal Acne: Why Topical Treatments Often Don't Work and What to Do Instead
You wash your face twice a day. You have cycled through cleansers, serums, and treatments. You have tried cutting out dairy, cutting out sugar, drinking more water. And you are still breaking out, in the same places, in roughly the same pattern, month after month.
The reason topical treatments so often fail to resolve acne is that they are treating the surface of something that is coming from much deeper body. Hormonal acne is not a skin hygiene problem. For many women it is one of the most visible signs of what is happening with their androgens, their insulin, and their oestrogen balance. And until those things are addressed, the acne continues regardless of what is applied externally.
Where you break out and when tells you something specific about what is driving it. That information is the starting point for treatment that actually works.
The Mechanism: Why Hormones Drive Acne
Acne develops when the sebaceous glands produce excess sebum, when that sebum changes in composition, and when the follicles become blocked and colonised by acne-causing bacteria. Hormones, specifically androgens, are the primary regulators of sebaceous gland activity. Androgens bind to receptors in the sebaceous glands and directly stimulate sebum production and follicular hyperkeratinisation, the process by which follicle cells proliferate and block the pore.
A 2024 review published in the Journal of Cutaneous and Aesthetic Surgery confirmed that the cutaneous effects of hormones are attributable to the influence of steroid hormones, particularly androgens, on sebocyte development and sebum production. Topical treatments can reduce bacterial load, unclog follicles, and manage surface inflammation. But they don't alter androgen signalling, insulin levels, or oestrogen balance. This is why they manage the symptom without resolving the cause.
Three Distinct Hormonal Acne Patterns
The most clinically useful thing about hormonal acne is that it tends to follow recognisable patterns. Where the breakouts appear and when they occur in relation to the menstrual cycle are two of the most informative diagnostic clues available, and two of the things most often overlooked in standard acne management.
Pattern One: Jaw and Chin Acne
Persistent, deep, or cystic acne concentrated along the jaw, chin, and lower face is the pattern most strongly associated with androgen excess. This is the most common acne pattern in PCOS/PMOS, and in women with elevated adrenal androgens. It tends to be cyclical but present throughout the month rather than being exclusively premenstrual. The lesions are often deeper and more inflamed than comedonal acne, and they do not respond well to topical treatment because the driver is systemic androgen production rather than a local skin environment issue.
Investigation in this pattern includes a full hormone panel, testosterone, androstenedione, and DHEA-S measured separately. DHEA-S elevation in isolation points toward adrenal origin and adrenal PCOS/PMOS. Testosterone and androstenedione elevation together point toward ovarian origin and insulin-resistant or inflammatory PCOS/PMOS. The source determines the approach to treatment.
Pattern Two: Cyclical Premenstrual Acne
Acne that flares predictably in the luteal phase, the one to two weeks before menstruation, and clears after the period begins reflects the hormonal shifts of the second half of the cycle rather than a sustained androgen excess. As progesterone falls in the premenstrual phase and oestrogen dominance increases relative to it, sebaceous gland activity rises. The skin becomes oilier, pores become more prone to blockage, and inflammatory lesions develop in the premenstrual window.
This pattern points toward oestrogen dominance and inadequate progesterone rather than primary androgen excess. It responds to support for oestrogen metabolism and clearance, and for progesterone adequacy in the luteal phase, rather than to androgen-focused interventions. A woman with this pattern who is treated as though she has PCOS-type androgen excess will not see meaningful improvement because the driver is different.
Oestrogen clearance depends on adequate liver glucuronidation and a gut microbiome that is not reactivating already-cleared oestrogen. The estrobolome, the collection of gut bacteria governing oestrogen metabolism, directly influences how much oestrogen recirculates, and elevated recirculating oestrogen in the luteal phase amplifies the sebaceous gland activity that produces this pattern of acne.
Pattern Three: Post-Pill Acne
Acne that develops or significantly worsens after stopping the oral contraceptive pill is also common. Women who were prescribed the pill partly or entirely to manage acne often find that stopping it produces a rebound that is worse than anything they experienced before starting.
The oral contraceptive pill suppresses ovarian and adrenal androgen production directly, and many formulations also increase sex hormone-binding globulin, which reduces the proportion of free androgens in circulation. When the pill is stopped, both effects reverse. Androgen production rebounds, often significantly above pre-pill levels in the weeks and months after discontinuation. Sex hormone-binding globulin falls. Free androgens rise. And the sebaceous glands, which have been relatively suppressed, respond to this surge.
This pattern is frequently misinterpreted as the pill having been the solution to acne when in fact it was masking an underlying androgenic tendency. The acne rebound after stopping the pill reveals what was there before the pill began, and in some cases amplifies it through the rebound mechanism. Treatment focuses on supporting the HPO axis recovery process and managing the androgen rebound period, rather than treating a long-term PCOS/PMOS diagnosis.
“The single most common reason I see hormonal acne fail to respond to treatment is that the pattern has never been identified. A woman with cyclical premenstrual acne driven by oestrogen dominance has been prescribed the same approach as a woman with jaw and chin acne driven by PCOS/PMOS. A woman with post-pill acne has been told she needs to try a different cleanser. The pattern tells you what is driving it. The pattern is the starting point. When the right driver is identified and addressed, the skin improves in ways that no topical treatment has managed to achieve.”
- Gemma Knaap, Naturopath (BHSc Naturopathy, Certified Natural Fertility Educator, Gut Microbiome Analyst)
Southernwood Apothecary & Clinic
The Role of Insulin Resistance
Across all three patterns, insulin resistance is one of the most significant and modifiable contributors to hormonal acne. Insulin directly stimulates androgen production from both the ovaries and adrenal glands. It also reduces sex hormone-binding globulin, the protein that binds androgens and keeps them inactive, increasing the proportion of free androgens available to stimulate sebaceous glands.
A study published in 2025 found that among 195 women with PCOS, 84.1% had vitamin D deficiency and 44.5% had insulin resistance. Hyperinsulinaemia stimulated ovarian androgen production while simultaneously reducing hepatic synthesis of sex hormone-binding globulin, further increasing the bioavailability of free testosterone and worsening the androgenic picture.
This means that dietary approaches targeting blood sugar and insulin sensitivity, regardless of whether a PCOS/PMOS diagnosis is present, can produce meaningful improvement in hormonal acne by reducing the insulin-driven androgen stimulus. The effect is not immediately visible and works across several cycles rather than overnight, but it is mechanistically sound and clinically consistent.
What Thorough Investigation Looks Like
An assessment for hormonal acne goes considerably further than a skin consultation.
• Full androgen panel: testosterone, androstenedione, and DHEA-S measured separately to identify the source and degree of androgen excess.
• Fasting insulin and glucose: to assess insulin resistance, which drives androgen excess independently of a PCOS/PMOS diagnosis.
• Thyroid function: thyroid dysfunction alters sex hormone metabolism and can contribute to hormonal acne indirectly.
• Oestrogen and progesterone: assessed at the appropriate cycle phase to evaluate the oestrogen to progesterone ratio in the luteal phase, relevant to cyclical premenstrual acne.
• Cycle and symptom history: detailed documentation of when and where acne appears in relation to the menstrual cycle, recent contraceptive history, and the full hormonal symptom pattern.
Together these provide a complete enough picture to direct treatment that is matched to the actual driver rather than applied generically.
Treatment Approaches by Pattern
For jaw and chin androgen-excess acne: targeting the source of androgen excess. For insulin-resistant PCOS/PMOS, this means blood sugar regulation through dietary intervention, and exercise that supports insulin sensitivity. For adrenal PCOS/PMOS, nervous system regulation, cortisol management, and adrenal nutritional support.
For cyclical premenstrual acne: supporting oestrogen clearance through the liver and gut, addressing the estrobolome, and supporting progesterone adequacy in the luteal phase through ovulation support and targeted nutritional interventions.
For post-pill acne: supporting HPO axis recovery and the return of normal ovulatory cycling, with nutritional repletion of nutrients commonly depleted by oral contraceptive use including B6, zinc, magnesium, and folate.
Across all patterns, reducing the overall systemic inflammatory load through dietary improvement and gut health support creates a less reactive foundation for the skin, and addressing vitamin D deficiency, which is highly prevalent in women with hormonal acne and PCOS/PMOS, supports immune regulation and reduces inflammatory acne severity.
More Than a Skin Problem
Hormonal acne, particularly when it is persistent, cyclical, and treatment-resistant, is often the most visible symptom of a hormonal imbalance that affects far more than the skin. The same androgen excess driving jaw acne may be affecting cycle regularity, fertility, and metabolic health. The same oestrogen dominance driving premenstrual breakouts may be driving heavy periods and mood changes. Treating the acne in isolation misses the opportunity to improve your health and the way you feel more broadly. When the hormonal pattern is understood and addressed comprehensively, skin improvement is one of several outcomes.
If you've been struggling with acne that isn't responding to help. In person consultations are available at my Albany clinic, or Telehealth consultations are available from anywhere in Australia.
Frequently Asked Questions
Why does hormonal acne not respond to topical treatments?
Hormonal acne is driven by androgens acting on the sebaceous glands to increase sebum production and alter its composition. This process is governed by hormonal signals from the bloodstream, not by the skin surface environment. Topical treatments can manage bacterial load and surface inflammation but do not alter androgen levels, insulin sensitivity, or oestrogen balance. Treatment that does not address the hormonal driver will produce limited or temporary results.
What causes jaw and chin acne in women?
Persistent, deep, or cystic acne along the jaw, chin, and lower face is strongly associated with androgen excess, most commonly from PCOS/PMOS or elevated adrenal androgens. Research has found that in women presenting with acne as their primary complaint, over 65 percent had a PCOS diagnosis. Insulin resistance amplifies androgen production and reduces sex hormone-binding globulin, increasing free androgens available to stimulate sebaceous glands. A full androgen panel including testosterone, androstenedione, and DHEA-S identifies the source and directs treatment.
What causes acne to flare before a period?
Cyclical premenstrual acne reflects the hormonal shifts of the luteal phase. As progesterone falls and oestrogen dominance increases in the premenstrual phase, sebaceous gland activity rises. This pattern points toward oestrogen dominance and inadequate progesterone rather than primary androgen excess, and responds to support for oestrogen clearance and progesterone adequacy rather than androgen-focused interventions.
Why did my acne get worse after stopping the pill?
The oral contraceptive pill suppresses androgen production and increases sex hormone-binding globulin, reducing the proportion of free androgens. When the pill is stopped, both effects reverse. Androgens rebound, often above pre-pill levels, and sex hormone-binding globulin falls. Free androgens rise and stimulate sebaceous gland activity that was suppressed while on the pill. This rebound reveals and often amplifies an underlying androgenic tendency rather than creating a new condition. Treatment focuses on supporting HPO axis recovery and managing the rebound period.
Does insulin resistance cause acne?
Yes. Insulin directly stimulates androgen production from the ovaries and adrenal glands, and reduces sex hormone-binding globulin, increasing the proportion of free androgens available to stimulate sebaceous glands. Insulin resistance is present in 70 to 80 percent of women with PCOS/PMOS, and dietary approaches targeting blood sugar and insulin sensitivity produce meaningful improvement in hormonal acne by reducing the androgen stimulus at its source.
Can a naturopath help with hormonal acne?
Yes. A naturopath assesses the full hormonal, metabolic, and cycle picture to identify which pattern of hormonal acne is present and what is driving it. Treatment is targeted to the specific driver: androgen excess, insulin resistance, oestrogen dominance, post-pill rebound, or a combination of these. This approach produces more lasting results than topical treatment alone because it addresses the cause rather than the surface expression.
About the Author
Gemma Knaap is a naturopath specialising in women's hormonal health, gut health, fertility, and reproductive wellbeing. She holds a Bachelor of Health Science in Naturopathy and is a Certified Natural Fertility Educator and Gut Microbiome Analyst. In person consultations are available at her Albany, WA clinic. Telehealth consultations are available across Australia.
References
Thiboutot, D. et al. (2024). The cutaneous effects of androgens and androgen-mediated sebum production and their pathophysiologic and therapeutic importance in acne vulgaris. Journal of Cutaneous and Aesthetic Surgery. https://doi.org/10.1080/09546634.2023.2298878
Cureus. (2025). Polycystic Ovary Syndrome-Associated Acne: The Interplay of Hyperandrogenism, Insulin Resistance, and Therapeutic Strategies. https://pmc.ncbi.nlm.nih.gov/articles/PMC12747725/
Balogh, Z. et al. (2025). Relations of Insulin Resistance, Body Weight, Vitamin D Deficiency, SHBG and Androgen Levels in PCOS Patients. Biomedicines, 13(8), 1803. https://pmc.ncbi.nlm.nih.gov/articles/PMC12383698/
Gruszczyńska, M. et al. (2023). Insulin resistance in patients with acne vulgaris. Biomedicines, 11(8), 2294. https://doi.org/10.3390/biomedicines11082294
PMC. (2024). Association of Polycystic Ovary Syndrome (PCOS) with acne vulgaris. International Journal of Clinical and Experimental Dermatology. https://ijced.org/archive/volume/12/issue/2/article/27089/pdf
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