Adult Acne in Australia: Causes, Treatments, and How an Online GP Can Help
Acne in adulthood is one of the most under-talked-about skin concerns in Australia. The standard assumption is that acne is something you grow out of in your late teens. For a meaningful minority, it isn't. Estimates suggest somewhere between 10 and 25 per cent of Australian adults have ongoing acne, with prevalence higher in women than men, and it can persist or even appear for the first time well into the 30s and 40s (Australasian College of Dermatologists, 2026).
The plain-English answer is this. Adult acne behaves differently from teen acne. The location is often different (more along the jawline, chin, and lower face). The triggers are different (hormones and stress feature more heavily). The skin is different (drier, more sensitive, more prone to redness and post-inflammatory marks). And, importantly, the treatments that worked at 16 often aren't the right fit at 36, and can sometimes make things worse.
Adult acne is also a quietly disproportionate burden on mental health. Studies consistently link visible adult acne to lower self-esteem, anxiety, and avoidance of social situations (Beyond Blue, 2026). That's worth saying out loud. It's not vanity. It's a skin condition that can affect how you feel about yourself, and it's worth treating.
This guide walks through how adult acne is different, what causes it, treatment categories at the class level, when an Australian GP is the right starting point, and when a dermatologist needs to be involved.
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The biology is similar. Acne is fundamentally about hair follicles getting blocked with skin cells and oil, a bacterial component, and inflammation. The difference in adults is in the pattern and the picture.
Location. Teen acne tends to spread across the forehead, nose, and cheeks. Adult acne, especially in women, often concentrates along the jawline, chin, and around the mouth. This jawline pattern is one of the typical signs of a hormonal driver.
Type of lesions. Teen acne is often dominated by whiteheads and blackheads. Adult acne is more often inflammatory: deeper, painful, slower-to-resolve cysts and nodules that leave marks long after they've healed.
Skin sensitivity. Adult skin is generally less oily, more reactive, and more prone to redness, dryness, and irritation. This matters because some classic acne treatments are drying or irritating, which can be poorly tolerated on adult skin.
Scarring and pigmentation. Adults are more prone to leaving post-inflammatory marks (dark spots, especially on darker skin, and red marks on lighter skin) that can take months to fade. True scarring (textural change to the skin) also concerns adults more, often because they've had ongoing acne for years.
Cycle pattern. In women, adult acne often flares in a predictable pattern with the menstrual cycle, typically the week before a period.
Adult acne is rarely about not washing your face. The real drivers cluster into a few categories.
Hormonal. The single biggest factor in adult female acne. Fluctuations in androgens (the hormone family that includes testosterone) drive oil production and follicular changes. This shows up as cyclical flares, jawline distribution, and a pattern that's resistant to topical-only treatment. Polycystic ovary syndrome is a common underlying contributor in women with persistent acne, especially when accompanied by irregular periods, unwanted hair growth, or weight changes.
Lifestyle. Stress is genuinely an acne trigger; cortisol affects oil production and inflammation. Sleep matters too. Diet has a more nuanced relationship than the internet suggests: high-glycaemic-load diets and possibly skim dairy show modest links in research, while chocolate as a single villain is less well supported (Royal Australian College of General Practitioners, 2026).
Skincare and cosmetics. Products that are too occlusive (thick oils, heavy makeup), too stripping (harsh cleansers, over-exfoliation), or too active (multiple exfoliating acids and retinoids combined) can all worsen adult acne. The trend toward elaborate skincare routines has, in some cases, made the problem worse.
Medications. A handful of medications can contribute to acne. If acne started or worsened after a new prescription, mention this to your GP. The fix can be straightforward.
Underlying conditions. Beyond polycystic ovary syndrome, less commonly, other endocrine conditions can drive acne. A GP will work through these where the picture warrants it.
Friction and occlusion. Helmets, headphones, masks, sports gear, and even prolonged phone-against-the-face can trigger acne in localised patterns. A small change to the trigger often makes a meaningful difference.
For most adults, the right first step is a GP. The threshold for an appointment is lower than people often think.
Book an appointment if:
- You've had acne for more than a few months and it's not settling with basic skincare
- You've been using over-the-counter treatments without improvement
- Lesions are painful, deep, or leaving marks
- It's affecting your confidence, mood, or social life
- Acne has appeared or worsened suddenly in adulthood
- You also have irregular periods, unwanted hair growth, or other changes that might point to a hormonal cause
- You're pregnant or planning to be (some acne treatments are not safe in pregnancy)
- You've tried a friend's prescription cream or supplement and want to know what's actually right for you
See a GP sooner if:
- Lesions are large, painful, and clearly inflamed (the early signs of severe acne, where the threshold for stronger treatment is lower)
- You're noticing ongoing scarring
- Acne is significantly affecting your mental health
Direct dermatologist or specialist referral is appropriate when:
- Acne is severe, scarring, or unresponsive to standard GP-led treatment
- A specific class of medication (the strongest oral treatments, used for severe acne) is being considered
- The diagnosis isn't clear and it might be something other than acne
A GP will know when to start treatment and when to refer.
This section deliberately avoids brand and molecule names. The right specific choice depends on your skin, history, other conditions, pregnancy plans, and tolerance, all of which are between you and your GP. What's useful at this stage is understanding the categories.
Topical treatments. The first-line option for most mild-to-moderate adult acne. Categories include:
- Topical retinoids. A foundational class for adult acne, working on follicular blockage and skin cell turnover. These take weeks to months to show full effect, and skin often gets a bit worse before it gets better.
- Topical antibacterials. Often combined with retinoids. They target the bacterial component.
- Topical antibiotics. Used for shorter periods to avoid antibiotic resistance, typically combined with another agent.
- Other topicals including anti-inflammatory and exfoliating actives, used either as foundations or alongside other treatments.
Oral antibiotics. A short course (typically a few months) for moderate, inflammatory adult acne, used in combination with topical treatment to address inflammation and bacteria. Not a long-term strategy.
Hormonal therapy in women. Where hormones are clearly driving the acne, options at the class level include the combined hormonal contraceptive pill, and in some cases, a class of medication that blocks androgen activity. These are particularly useful for jawline-pattern, cyclical adult acne in women.
Oral retinoids. Reserved for severe, scarring, or treatment-resistant acne. This class is prescribed only by dermatologists in Australia, requires careful monitoring, and is highly regulated, particularly because it can't be used in pregnancy. It's mentioned here so you know it exists; the conversation about whether it's right for you is one a GP and a dermatologist have together.
Procedures. Once acne is controlled, dermatologists or trained professionals can address scarring and pigmentation through procedures. The right time for these is when active acne has settled, not while it's still flaring.
Skincare and lifestyle support. Underrated. A simple, gentle routine (a non-stripping cleanser, a non-comedogenic moisturiser, daily sunscreen) supports any prescription treatment. Adding too many products usually makes things worse.
A GP will walk through which combination is appropriate for your situation and write the right prescriptions. Repeat scripts can often be issued through an online prescription once treatment is established.
Online appointments for skin concerns
Abby Health is an online-first clinic where Australian GPs see skin concerns seven days a week. For most adult acne, the format suits the care well. Skin concerns can be assessed via video consult and clear photos of the affected areas, which patients often find easier than booking time off work to sit in a waiting room.
A GP can take a careful history (including hormonal pattern, stress, skincare, medications), assess what's likely driving your acne, and start treatment, almost always with a structured plan and a follow-up. Continuity matters here: acne treatment takes time, and seeing a doctor who already knows your story makes adjustments easier. Abby AI, our medical AI, supports the doctor by surfacing your history before the consult, never replacing clinical judgment.
For situations that genuinely need a dermatologist (severe, scarring, or treatment-resistant acne, or where stronger oral treatments are being considered), an Abby GP can refer. To schedule an appointment, see the booking page.
Abby Health is bulk billed for eligible patients with a valid Medicare card. Strict eligibility criteria apply.
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