Health condition · Clinically reviewed
Acne, topical retinoids, oral options — and when isotretinoin fits.
Not just teenage acne — adult and hormonal acne is common and treatable. A stepped medical approach beats endless product-hopping.
Why trust this guide
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Clinically reviewed
Written by our editorial team and reviewed by a registered UK clinician before publication.
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Sourced from guidance
Checked against NICE, BAD and peer-reviewed sources you can see at the end.
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Current for 2026
Reflects modern UK guidance including topical retinoids, hormonal options and isotretinoin monitoring.
Key facts
Acne at a glance.
The essentials, in plain English — what it is, the types, and how it’s treated in the UK today.
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What it is
Pilosebaceous inflammation — comedones plus inflammatory papules driven by sebum, keratin plugging and Cutibacterium acnes.
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Types
Comedonal, inflammatory, nodulocystic and hormonal — each responds to a slightly different treatment mix.
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Adult acne
Increasingly common, especially in women — often hormonal, distributed on the jaw and chin.
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Foundation therapy
Topical retinoids (adapalene, tretinoin) are the backbone of nearly every acne plan.
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Oral antibiotics
Short-course only — typically lymecycline or doxycycline for up to 12 weeks alongside topicals.
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Isotretinoin
The best-evidenced option for moderate-to-severe acne — dermatology-led, with pregnancy and mood monitoring.
Why this guide matters
A stepped plan, not a shelf of products.
Acne is common, treatable and — with the right ladder — usually controllable. The three points below shape everything else on this page.
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Topical retinoids are foundational
Adapalene or tretinoin is the backbone of nearly every acne plan — introduce slowly and give it 12 weeks.
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Antibiotics are short-course tools
Oral antibiotics belong in acne care for up to 12 weeks at a time, alongside a topical — never as a solo long-term strategy.
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Isotretinoin changes outcomes
For moderate-to-severe or scarring acne it is the best-evidenced option — worth an early conversation with dermatology.
How the diagnosis is made
From first spots to a clear plan.
The steps a UK GP or dermatologist will normally follow, in order — so you know what to expect and why.
Phase 1 · Assessing
Severity, impact and endocrine review
Phase 2 · Confirming
Investigations and referral
Phase 3 · Preparing
Bloods and contraception for isotretinoin
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Assessing
Skin exam and severity
A structured look at comedones, inflammatory lesions, nodules and scarring — mild, moderate or severe.
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Assessing
Life-impact assessment
DLQI (Dermatology Life Quality Index) puts a number on how much acne is affecting mood, sleep and confidence.
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Assessing
Rule out endocrine causes
In hormonal acne — especially with irregular periods or hirsutism — consider PCOS and check the appropriate bloods.
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Confirming
Bacterial swab if unusual
Not routine — reserved for atypical, gram-negative folliculitis or treatment-resistant pustular disease.
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Confirming
Dermatology referral
Moderate-to-severe disease, scarring, or failure of first-line therapy warrants a specialist opinion.
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Preparing
Baseline bloods for isotretinoin
Lipids, liver function and pregnancy testing before starting — monitored during treatment.
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Preparing
Contraception plan (women)
Isotretinoin is highly teratogenic — two forms of contraception and monthly pregnancy testing under the Pregnancy Prevention Programme.
Typical timeline: a first visit to a settled plan in weeks, not months.
Symptoms
What acne actually looks like.
The classic mix of comedones, inflammatory lesions and — in some — nodulocystic disease. And the features that mean it’s time to escalate.
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Comedones
Open (blackheads) and closed (whiteheads) — the earliest lesion and a key target for topical retinoids.
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Papules
Small, red, tender bumps — inflammatory lesions that respond to combined topical therapy.
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Pustules
Pus-filled inflammatory lesions — benzoyl peroxide and topical antibiotics help.
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Nodules and cysts
Deep, painful lesions that scar — a clear indication for oral therapy and dermatology review.
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Pigmentation and scarring
Post-inflammatory hyperpigmentation and atrophic scars — early treatment prevents both.
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Hormonal distribution
Chin, jawline and lower face — often cyclical and worse premenstrually in women.
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Adult-onset acne
New acne appearing in the 20s, 30s or later — usually responds to hormonal or standard therapy.
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Red flag — scarring or nodulocystic
Deep, scarring or nodulocystic disease deserves early dermatology referral for isotretinoin.
Treatment
How acne is treated in the UK.
Topical retinoids first, hormonal and short-course oral options next — and isotretinoin for moderate-to-severe or scarring disease.
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Topical retinoid
Adapalene or tretinoin — foundational for comedonal and inflammatory acne. Introduce slowly to reduce irritation.
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Benzoyl peroxide
Antibacterial and anti-comedonal — often combined with a retinoid or antibiotic to prevent resistance.
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Topical antibiotic
Clindamycin — always paired with benzoyl peroxide or a retinoid, never used alone for long.
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Azelaic acid
Useful for pigmentation and sensitive or pregnant patients — anti-inflammatory and lightening.
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Combined oral contraceptive
A hormonal option for women — reduces androgen-driven sebum production over three to six months.
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Spironolactone
Off-label anti-androgen for adult women with hormonal acne — often used long-term at low doses.
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Short-course oral antibiotic
Lymecycline or doxycycline for up to 12 weeks with a topical — never as monotherapy.
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Isotretinoin
Dermatology-only oral retinoid — the best-evidenced option for moderate-to-severe or scarring acne. Strict monitoring.
What this guide is based on
The sources behind every claim on this page.
UK national guidance and specialist society standards, current at the time of last review.
Key references
Guidelines and standards we relied on.
A quiet reminder
This guide is for information, not medical advice.
Your GP or dermatologist knows your skin and history and can tell you which parts apply to you. If in doubt, get seen.
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NICE. Acne vulgaris: management (NG198).
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British Association of Dermatologists (BAD). Guidance and patient leaflets on acne.
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European Dermatology Forum. Guideline for the treatment of acne.
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MHRA. Isotretinoin monitoring update (mood and sexual health).
Red flags
When acne needs urgent attention.
Most acne is manageable in primary care. These are the situations that aren’t — and where a specialist opinion is needed.
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Acne fulminans
Sudden severe systemic acne with fever, joint pain and ulcerating nodules — an emergency needing hospital-based dermatology care.
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Deep scarring
Any atrophic or ice-pick scarring is a strong signal for early dermatology referral before more scars form.
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Psychological distress and suicidality
Acne carries a real mental-health burden — low mood or suicidal thoughts need urgent GP or crisis support.
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Isotretinoin — mood monitoring
MHRA guidance requires regular mood and mental-health checks while on isotretinoin. Report changes early.
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Isotretinoin — pregnancy exposure
Severely teratogenic — any suspected exposure needs immediate specialist review.
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Skin dysmorphia
When perceived severity outstrips clinical severity — deserves a compassionate mental-health assessment.
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Steroid-induced acne
Sudden monomorphic papules after oral or topical steroids — review the steroid and treat conservatively.
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Endocrine features
Rapid virilisation, hirsutism or weight change — consider PCOS or, rarely, a Cushing screen.
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Chloracne
Occupational exposure to halogenated aromatic hydrocarbons — a distinct pattern needing occupational-health input.
Living with it
A treatable condition, with a clear ladder.
Four things that make the biggest difference day to day — a simple routine, patience with topicals, daily sunscreen and knowing when to step up.
A quiet reminder
Consistency beats intensity, every time.
Small, steady habits — kept up for months — do more than a heroic week that doesn’t last.
- 01 Routine
Keep it simple
Gentle cleanser, one active in the morning, one at night. Fewer products often work better than more.
- 02 Patience
Give it 8 to 12 weeks
Topicals take weeks to work — judge success at three months, not three days.
- 03 Sun
Sunscreen matters
Retinoids and some antibiotics increase sun sensitivity — daily SPF prevents pigmentation and scarring.
- 04 Escalate
Don’t settle for scarring
If treatment isn’t enough, isotretinoin has transformed outcomes for moderate-to-severe acne — ask for a referral.
Frequently asked
Everything we get asked about acne.
Quick answers on retinoids, antibiotics, hormonal options and isotretinoin.
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What is acne?
A pilosebaceous inflammatory condition — comedones and inflammatory papules driven by sebum, keratin plugging, hormones and Cutibacterium acnes. It ranges from mild comedonal disease to severe nodulocystic scarring acne.
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Is adult acne different from teenage acne?
It often looks and behaves differently — commonly appearing on the chin and jawline in women and often hormonal. Treatment principles are similar but hormonal options like the combined pill or spironolactone are frequently used.
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When should I use a topical retinoid?
Almost always — adapalene and tretinoin are the backbone of acne care. Start slowly, use pea-sized amounts at night, and expect 8 to 12 weeks to see full benefit.
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Are oral antibiotics safe long-term?
No — they should be used for no more than 12 weeks at a time and always alongside a topical to reduce resistance. Long courses drive antimicrobial resistance without giving lasting benefit.
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What does isotretinoin actually do?
It shrinks sebaceous glands, reduces sebum, normalises keratin production and calms inflammation. It is the best-evidenced treatment for moderate-to-severe acne and often produces long-term remission.
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What are the risks of isotretinoin?
Dry skin, dry eyes and lips are common. It is severely teratogenic — pregnancy must be excluded and prevented. MHRA guidance requires monitoring for mood, mental-health and sexual side effects during treatment.