Many women assume acne ends with their teenage years. But there is one type that appears or persists into your twenties and thirties, usually along the chin, jawline and lower cheeks, and it rarely clears with an ordinary face wash. This is adult hormonal acne, and for some Malaysian women it is the first visible clue of undiagnosed PCOS.

Why hormonal acne favours the chin and jawline

The oil (sebaceous) glands in your skin carry androgen receptors. When androgens such as testosterone rise, or when the glands simply become more sensitive to androgens, they produce more oil. That excess oil mixes with dead skin cells, clogs the pore, and encourages bacteria and inflammation. The result is deep, red, sometimes painful pimples that are hard to clear.

The chin, jawline and lower neck carry the most androgen receptors, which is why hormonal acne clusters there. Here is something many people do not realise: research shows that most women with adult acne actually have normal hormone levels in their blood. The problem is not always too much hormone circulating, but skin that responds more strongly to androgens at the gland level. Some women have more androgen receptors in the skin, or more sensitive ones, so the glands react even when androgen levels are low. That is why a normal blood test does not mean your acne is not hormonal, and anti-androgen treatment can still help.

Teenage acne versus adult hormonal acne

Telling the two apart helps you and your doctor choose the right treatment. Teenage acne tends to spread across the forehead, nose and upper cheeks, the oily T-zone, and usually settles once puberty hormones stabilise. Adult hormonal acne is more concentrated on the lower half of the face, often appears as deep bumps under the skin, and many women notice it flares in the week before their period. That recurring monthly pattern is a strong clue that hormones are involved.

Another difference is the response to ordinary skincare. Teenage acne often responds well to cleansers and over-the-counter topicals, while adult hormonal acne tends to be stubborn even when the skincare routine is already correct. If you have been consistent with your skin for months but the chin and jawline acne keeps returning with your cycle, the cause is most likely hormonal rather than hygiene.

How it connects to PCOS

PCOS is one of the most common causes of androgen excess in women of reproductive age, so acne often forms part of the picture. Unlike teenage acne, which usually rises and settles with age, PCOS-related acne tends to be persistent and chronic because androgens stay elevated over time. It also rarely arrives alone. If your acne comes alongside irregular periods, excess facial hair, or weight that is hard to shift, that combination points more towards PCOS than ordinary acne.

Keep in mind that acne alone does not diagnose PCOS. The international PCOS guideline (the 2023 Monash, ESHRE and ASRM guideline that Malaysia follows) requires at least two of three features: irregular periods, signs of androgen excess (either clinical, such as acne or excess hair, or on a blood test), and polycystic ovaries on a scan. Acne is one clue, not a verdict. See the full list of PCOS symptoms for the wider picture.

It is also worth knowing that PCOS is not the only cause of androgen excess. If acne comes on suddenly and severely over a short time, or alongside signs such as a deepening voice, noticeably increasing muscle, or male-pattern thinning at the hairline, a doctor may need to rule out rarer causes before confirming PCOS. This is exactly why a full assessment by a doctor is better than diagnosing yourself from acne alone.

When to see a doctor

Hormonal acne is not an emergency, but there is a point where it makes sense to stop experimenting with shop-bought products and see a doctor. Consider booking an appointment if:

  • Your acne is deep, cyst-like, and leaves scars or dark marks
  • It comes with infrequent or absent periods, increasing facial hair, or a sudden deepening of the voice (the last one should be checked promptly)
  • Months of over-the-counter products have made no real difference
  • The acne is affecting your confidence and mental wellbeing

In Malaysia, you can start at a KKM Klinik Kesihatan for around RM1 for citizens, and the medical officer can refer you to a hospital gynaecology or endocrine clinic if needed. Follow-up visits at government clinics are usually around RM5. Private clinics and dermatology specialists offer faster access, but costs vary by centre. If your acne is treated as a clue to PCOS, the doctor may suggest hormone blood tests and a scan. For unmarried women or those with no history of intercourse, a transabdominal ultrasound is the usual first-line choice in Malaysia, and PCOS can still be diagnosed without a transvaginal scan.

What to ask your doctor

An appointment is more useful when you arrive with clear questions. Some helpful ones to ask:

  • Is my acne considered a clue to PCOS, and do I need hormone blood tests or a scan?
  • If I need the combined pill or spironolactone, what side effects should I watch for and how long before I see results?
  • Are these medicines safe if I am planning to get pregnant soon?
  • What skincare routine suits my skin during treatment?
  • When should I come back for a follow-up to review progress?

Bringing a list of any medicines and supplements you already take also helps the doctor avoid interactions and give more accurate advice.

Treatment options: from topicals to anti-androgen medication

Hormonal acne treatment is usually layered, and patience matters because almost every option takes 8 to 12 weeks before the real effect shows.

Basic topical care. Dermatologists usually start with a topical retinoid to help skin cells turn over and benzoyl peroxide to reduce bacteria. This is often the foundation for mild to moderate acne. Clascoterone 1% cream is a newer topical option that blocks androgen effects directly on the skin, and it was the first acne drug with a new mechanism of action approved by the FDA in roughly 40 years, but its availability in Malaysia is still limited.

Oral anti-androgen medication. When acne is more severe or clearly hormone-driven, a doctor may suggest a combined oral contraceptive (estrogen and progestin), which lowers active androgens in the blood. Spironolactone is another option that blocks androgen receptors; good-quality dermatology studies, including a large randomised controlled trial with more than 400 participants, show benefit at doses of 50 to 100 mg a day, with a dose-dependent effect that continues to improve by 24 weeks. Spironolactone can raise potassium levels, so a doctor may avoid combining it with potassium supplements or certain medicines, and it must be avoided in pregnancy. These are prescription-only and not suitable while trying to conceive or during pregnancy, so the decision should be made together with your doctor.

Isotretinoin for severe cases. For severe, scarring nodulocystic acne that has not responded to other treatments, a dermatologist may consider oral isotretinoin. It is effective but tightly monitored because it causes severe birth defects even with short exposure. It is therefore given under a strict pregnancy prevention programme, with pregnancy testing and agreed contraception. This is a specialist prescription, not something to start on your own.

Managing the metabolic root. Because PCOS often involves insulin resistance, improving insulin sensitivity through diet, movement and sometimes metformin can help lower androgens at the source. This is not a direct acne treatment, but it addresses the engine driving the androgen excess. In Malaysia, weight and insulin resistance are among the heaviest PCOS burdens, so addressing the metabolic side brings broader long-term benefits, including lowering the later risk of type 2 diabetes and heart disease.

Daily skincare and common mistakes

Although skincare alone rarely fixes moderate to severe hormonal acne, the right routine supports treatment and avoids extra irritation. A few principles that help:

  • Use a gentle cleanser twice a day; over-washing or harsh scrubbing only irritates the skin and can worsen acne
  • Choose products labelled “non-comedogenic” so they do not clog pores
  • Do not pick or squeeze deep pimples, as this raises the risk of scars and dark marks that last longer, especially on darker skin
  • Wear sunscreen daily, because some acne treatments make the skin more sensitive to light
  • Give each treatment enough time; switching products every few weeks makes it hard to judge what is actually working

The myth that acne comes from “dirty” skin needs to be put aside. Hormonal acne is not a sign of poor hygiene, and blaming yourself only adds stress, which can also worsen the skin.

Supplements: what is true and what is overstated

Many supplements are marketed for “PCOS skin”, so it is worth being honest about the evidence. Inositol and better blood sugar control may help indirectly through metabolism, but the specific evidence for acne is weak.

N-acetylcysteine (NAC) comes up often. The dose used in PCOS studies is around 1.8 grams a day, and NAC shows some benefit for certain metabolic and fertility outcomes. But for acne specifically, a large systematic review and meta-analysis (eight studies, about 910 women) found no significant difference in acne between NAC and placebo. So if you want to try it, treat it as possible metabolic support rather than a proven acne treatment.

Spearmint tea also comes up often because it has shown an androgen-lowering effect in a few small studies, including a randomised controlled trial in women with PCOS who drank two cups of spearmint tea a day. The evidence is moderate to limited, and most studies measured androgen levels and hair rather than acne directly, so treat it as light support worth trying rather than a main treatment. Always check halal status and NPRA registration for any supplement, tell your doctor if you take other medication, and avoid it without advice if pregnant or breastfeeding. For the full picture, read our supplements guide.

The honest reality is that no supplement matches proper anti-androgen treatment for moderate to severe hormonal acne. Supplements work best as a complement, not a replacement.

A calm next step

If you have only just noticed this pattern, start with one step at a time. Note where the acne appears, your period dates, and any other symptoms over one to two months, then bring those notes to a clinic. This information helps a doctor tell ordinary acne apart from PCOS-related acne more quickly. Our newly diagnosed PCOS guide explains the early steps after diagnosis in more detail. Hormonal acne can be managed well, and it is not a failure of your skincare; it is a hormonal issue that has solutions.