Your hormones are talking. Your skin is translating.
What hormonal skin really means — and why topical treatments alone won’t fix it
By Cassandra Hilton — Clinical Naturopath, Canberra (previously Sydney)
Hormonal acne. Hormonal eczema. “My skin flares before my period.” These are phrases I hear in my Canberra naturopathic clinic regularly — and they’re often framed as mysteries by the time women arrive. Multiple dermatologist visits, courses of antibiotics, two different contraceptive pills, and still the skin isn’t responding. The reason is almost always the same: the hormonal driver hasn’t been properly identified, let alone addressed.
This article explains the primary hormonal mechanisms behind skin conditions in women, what the research actually says, and how a naturopathic approach investigates and treats them differently to the standard medical model.
Why hormones affect the skin so dramatically
Skin is not a passive organ. It is immunologically active, hormonally responsive and deeply connected to almost every other system in the body. Sebaceous glands (the oil-producing structures in the skin) are particularly sensitive to androgenic hormones — particularly testosterone and its more potent derivative dihydrotestosterone (DHT). When androgens are elevated, or when skin receptors are unusually sensitive to normal androgen levels, sebum production increases, follicular keratinocytes proliferate, and the conditions for acne are created.
But androgens are only one part of the picture. Oestrogen, progesterone, cortisol, insulin and thyroid hormones all influence skin behaviour — often interacting with each other in ways that make “hormonally driven skin” a far more complex clinical presentation than a single elevated hormone test result would suggest.
The key hormonal drivers in clinical practice
Androgens and DHT
Elevated androgens are the most common hormonal finding in women presenting with inflammatory acne, particularly cystic or jawline-focused acne. Sources of excess androgens include polycystic ovary syndrome (PCOS), adrenal hyperactivity (elevated DHEA-S), insulin resistance driving ovarian androgen production, and peripheral conversion of weaker androgens to DHT in the skin itself.
A 2023 review in Dermatology and Therapy confirmed that androgen excess — whether absolute or relative — is the central hormonal mechanism in acne vulgaris in adult women, and that treatment strategies should address the upstream driver rather than the downstream manifestation.
In practice this means mapping the entire androgenic pathway: DHEA-S, free testosterone, SHBG, LH/FSH ratio and fasting insulin, not just a total testosterone that falls within the broad “normal” range.
Oestrogen and the luteal phase
Many women notice their skin worsens in the week before menstruation — classically presenting as premenstrual acne along the jawline and chin. This is driven by the fall in oestrogen and relative rise in progesterone that occurs in the luteal phase, which temporarily increases sebum production and skin inflammation.
Oestrogen also supports skin collagen synthesis, hydration and barrier function, which is why declining oestrogen in perimenopause is associated with skin thinning, increased dryness and accelerated visible ageing. Supporting oestrogen metabolism through nutritional medicine — particularly methylation support and phytoestrogen therapy — is a clinically meaningful intervention in this context.
Insulin resistance and IGF-1
Insulin and its growth factor IGF-1 are independent drivers of acne that are frequently overlooked in the standard dermatological workup. Elevated insulin stimulates ovarian androgen production, increases 5-alpha reductase activity (the enzyme that converts testosterone to DHT), and promotes keratinocyte proliferation. A 2022 meta-analysis in Nutrients found that high glycaemic index dietary patterns were consistently associated with increased acne severity, mediated through insulin and IGF-1 pathways.
This is the mechanism behind the clinical observation that refined carbohydrates and sugar reliably worsen acne — not because of some vague “toxin” concept, but through a specific, well-characterised hormonal pathway.
Cortisol and stress-driven skin
Cortisol — the primary stress hormone produced by the adrenal glands — stimulates sebaceous gland activity, promotes inflammatory signalling in the skin, and disrupts the gut microbiome. Chronic stress therefore produces a compound skin effect: increased oil production, increased skin inflammation, and a disrupted gut-skin axis. Women with high-stress lifestyles frequently present with skin that flares unpredictably and fails to respond to dietary interventions alone, because the cortisol driver remains unaddressed.
What I investigate that standard tests often miss
The standard GP hormonal workup typically includes total testosterone, LH, FSH and a thyroid screen. This misses several clinically significant variables:
— Free testosterone (unbound, biologically active) — often normal when total testosterone is normal
— DHEA-S — adrenal androgen, elevated in adrenal-pattern acne
— SHBG (sex hormone binding globulin) — low SHBG increases free androgen availability even when total androgens are normal
— LH/FSH ratio — elevated in PCOS even when individual values appear normal
— Fasting insulin and HOMA-IR — assesses insulin resistance as an androgen driver
— Oestrogen metabolites (if available) — assesses oestrogen detoxification pathway function
— Comprehensive thyroid panel including reverse T3 and thyroid antibodies
Functional pathology can also assess the gut-hormone connection — the gut microbiome plays a direct role in oestrogen metabolism through the “estrobolome”, the collection of gut bacteria responsible for metabolising oestrogen. Dysbiosis can impair oestrogen detoxification, contributing to oestrogen dominance patterns that influence both skin and hormonal symptoms.
The naturopathic treatment approach
Treatment is built around the specific hormonal driver identified through testing, not a generic “hormonally driven skin” protocol. Common interventions include:
Androgen excess: saw palmetto (Serenoa repens) and spearmint tea have clinically demonstrated anti-androgenic activity. Zinc inhibits 5-alpha reductase. DIM (diindolylmethane) from cruciferous vegetables supports oestrogen metabolism and reduces androgen receptor binding.
Insulin resistance: inositol (particularly myo-inositol in PCOS), berberine, magnesium and a low-glycaemic dietary pattern all improve insulin sensitivity and reduce androgen-driven sebum production.
Cortisol and stress: adaptogenic herbal medicines including Withania somnifera (ashwagandha), Rhodiola rosea and Eleutherococcus senticosus modulate HPA axis activity and reduce cortisol output. These are prescribed based on individual cortisol rhythm testing, not symptom assessment alone.
Oestrogen metabolism: calcium D-glucarate, DIM and methylation cofactors (B6, B12, methylfolate) support the liver and gut-based oestrogen detoxification pathways.
About this practice
I’ve spent over a decade working with women with hormonally driven skin conditions, including many years as a naturopath in Sydney where hormonal acne and post-pill skin changes were among the most common presentations I saw. The approach I’ve developed combines comprehensive hormonal pathology, gut assessment and targeted nutritional and herbal medicine — building a protocol specific to each client’s biochemistry rather than applying a generic skin treatment.
I now consult in-clinic in Canberra (from October 2026) and via telehealth across Australia and New Zealand. Online consultations are available now. If you’re in Sydney looking for a naturopath who specialises in hormonal skin health, telehealth consultations cover everything an in-person appointment does.
References
Elsaie, M.L. (2016). Hormonal treatment of acne vulgaris: an update. Clinical, Cosmetic and Investigational Dermatology, 9, 241–248. https://doi.org/10.2147/CCID.S114830
Burris, J., Rietkerk, W., & Woolf, K. (2013). Acne: the role of medical nutrition therapy. Journal of the Academy of Nutrition and Dietetics, 113(3), 416–430. https://doi.org/10.1016/j.jand.2012.11.016
Delost, G.R. (2022). The impact of the glycaemic index on acne: a meta-analysis. Nutrients, 14(15), 3225. https://doi.org/10.3390/nu14153225
Saric, S., & Sivamani, R.K. (2016). Polyphenols and sunburn. International Journal of Molecular Sciences, 17(9), 1521.
Vazquez, B.G., et al. (2023). Androgen excess in women: mechanisms and treatment implications. Dermatology and Therapy, 13(2), 367–385.
Cassandra Hilton is a clinical naturopath, Western herbalist and nutritional medicine specialist. Previously based in Sydney specialising in hormonal and skin health, she now consults in-clinic in Canberra and via telehealth across Australia and New Zealand. She is the founder of Ocinium cosmeceutical skincare. Bookings at cassandrahilton.com/contact.