MD Dermatology · 25+ yrs international practice
Dermatologist's quick take
- Teen, adult, hormonal and menopausal acne are clinically different
- Adult acne is usually inflammatory, on the lower face and jaw
- Hormonal acne flares cyclically and responds to internal treatment
- Topical retinoids + benzoyl peroxide remain the evidence base for most types
- If acne scars or you've tried OTC for 12+ weeks, escalate to a dermatologist
Calling acne "a teenage problem" is one of the most stubborn myths in skincare. In my Nairobi clinic and across the international cases I review, the largest single cohort of acne patients is women aged 25–45. I'm Dr. Urhekar, and in this guide I want to break acne down into the four distinct conditions clinicians actually treat — because the right treatment depends entirely on which one you have.
Throughout, I'll cross-link the rest of the Ask a Dermatologist cluster and to ScanSkinAI, where a free AI skin analysis can help you confirm which acne type you have before you start spending on products.
The four ages of acne
Teen acne (12–19)
Sebum-driven, T-zone, mix of comedones and inflammatory papules. High response to topical retinoids + BPO.
Adult acne (20–35)
Stress and hormonal flares. Lower face, jaw, neck. Deep, painful papules; fewer comedones.
Hormonal acne (any age)
Cyclical flares before menstruation. Often jawline. Driven by androgen receptor sensitivity, not hormone levels.
Perimenopausal acne (40–55)
Oestrogen drops, relative androgen excess. Often coexists with rosacea, dry skin, melasma.
Why acne actually happens (in plain English)
Four things have to go wrong simultaneously: (1) follicles produce more sebum than they can clear; (2) dead skin cells clump and block the follicle opening; (3) Cutibacterium acnes bacteria proliferate in the trapped environment; and (4) the immune system mounts an inflammatory response. Each step is treatable, but most over-the-counter products only target one or two.
What works — by acne type
Teen and comedonal acne
Topical retinoid (adapalene 0.1% nightly) + benzoyl peroxide 2.5% (mornings or alternate evenings). This combination has the strongest evidence base of any acne regimen. Add a non-comedogenic moisturiser and SPF — both adapalene and BPO cause photosensitivity.
Adult inflammatory acne
Same backbone (retinoid + BPO), plus consider azelaic acid 15–20% for the post-inflammatory hyperpigmentation that adult acne leaves behind. Niacinamide 5% can help calm the inflammatory cascade. For most adults, layering 3–4 actives is enough — and adding more usually irritates the barrier.
Hormonal acne
Topicals alone often plateau. Internal options that work in published trials include spironolactone (50–200 mg daily under medical supervision), combined oral contraceptives in suitable patients, and in resistant cases, oral isotretinoin. These all need a clinician's prescription and monitoring.
Perimenopausal acne
Treat the acne and the dryness simultaneously. Use a gentler retinoid (retinaldehyde or low-dose tretinoin), add ceramide-rich moisturiser, and consider HRT discussion with your GP if other menopausal symptoms warrant it. Heavy occlusive products will flare both acne and rosacea — choose lightweight gels.
The acne-fighting non-negotiables
- Use SPF 30+ daily — sun makes post-acne marks darker and more permanent
- Change your pillowcase 2x weekly; clean your phone screen daily
- Don't switch products every 2 weeks — give each routine 12 weeks before judging
- Stop popping. Every squeezed lesion adds 4–6 weeks of healing time
- Track your cycle alongside breakouts — patterns reveal hormonal drivers fast
Acne marks vs acne scars
Marks (red or brown discolouration) are post-inflammatory changes — they fade in 6–12 months with sunscreen, retinoids and azelaic acid. Scars (depressed, raised or ice-pick lesions) are permanent textural changes that need procedural treatment: subcision, microneedling with PRP, fractional laser, or TCA CROSS for ice-pick scars.
When to escalate to a dermatologist
- Cystic or nodular lesions — these scar without aggressive treatment
- OTC routine for 12+ weeks with no improvement
- Acne distributed beyond the face (chest, back, shoulders)
- Significant emotional impact or social withdrawal
- You're starting to scar (even mild)
Skin of colour: an extra warning
In Fitzpatrick IV–VI skin, the most damaging legacy of acne is not the active lesion but the dark mark that follows. Aggressive treatments can paradoxically worsen hyperpigmentation by irritating the skin. Start gentler, layer SPF religiously, and read skincare for dark skin tones and hyperpigmentation: causes and treatments.
How ScanSkinAI fits in
Use ScanSkinAI at the start of any new acne routine to confirm the type (inflammatory vs comedonal vs rosacea — these often get confused), then track lesion counts every 2 weeks. Objective tracking beats memory every time, and dermatologists can review your photo timeline for context.
Identify your acne type in 60 seconds
Free AI skin check distinguishes inflammatory acne, comedonal acne, rosacea and folliculitis.
Frequently Asked Questions
Dr. Anand S. Urhekar
VerifiedMD Dermatology · 25+ yrs · Section Head, M.P. Shah Hospital Nairobi · Former UN Dermatologist
Dr. Urhekar is a board-certified dermatologist with over 25 years of practice across Africa, the Middle East and Asia. As Section Head of Dermatology at M.P. Shah Hospital Nairobi and a former UN dermatologist, he specialises in tropical skin disease, Fitzpatrick IV–VI skin care and global health.