Breakouts & Pores
Acne
Acne is an inflammatory skin condition in which hair follicles become blocked and inflamed, producing blackheads, whiteheads, spots and sometimes deeper painful lesions.
Overview
What is acne?
Acne develops when oil, dead skin cells and other material collect inside hair follicles. Inflammation and changes involving bacteria that normally live on the skin can then contribute to visible lesions.
It most often affects the face, chest, shoulders and back. Acne can occur at any age, although it is especially common during adolescence and may continue or begin in adulthood.
Common signs and patterns
What acne can look or feel like
These features can provide context, but they do not confirm a diagnosis on their own.
Blackheads and whiteheads
Open and closed comedones form when follicles become blocked without deep inflammation.
Inflamed spots
Papules and pustules appear red or tender and may contain visible pus.
Deep painful lesions
Nodules and cyst-like lesions develop deeper in the skin and carry a higher risk of scarring.
Post-acne marks and acne scars
Flat red or brown marks may remain after lesions settle; indented or raised scars reflect structural change.
Causes and contributors
Acne develops through several overlapping processes.
Follicular blockage, oil production, inflammation and acne-associated bacteria all contribute. Genetics and hormonal changes can influence who develops acne and how severe it becomes.
Some medicines, friction, occlusive products, picking and aggressive scrubbing may worsen the pattern. Diet may affect acne in some people, but it is not the only cause and evidence does not support blaming a single food in every case.
What it may be confused with
Similar-looking concerns need different decisions
Persistent or unusual bumps should not automatically be treated as acne, especially when the distribution, symptoms or triggers do not fit.
Rosacea
Usually centres on facial redness, flushing and inflammatory bumps; blackheads and whiteheads are not typical.
Perioral dermatitis
Often clusters around the mouth, nose or eyes and usually lacks the comedones typical of acne.
Folliculitis
Inflammation around hair follicles may produce similar-looking bumps, sometimes with itch or a more uniform appearance.
Hidradenitis suppurativa
Deep recurring lumps, tunnels or drainage in body folds require medical assessment and are not ordinary acne.
Bottom line
Treat early enough to reduce scarring, but do not overload the skin.
Most acne treatments need consistent use for several weeks before the direction of improvement becomes clear.
Choose treatment according to lesion type, severity, sensitivity, pregnancy considerations and risk of scarring rather than adding multiple strong products at once.
Evidence-supported options
Choose the option that matches the condition and its severity
This is general education, not a personal treatment plan. Product strengths, permitted uses and prescription status vary by country.
Topical retinoids
Help prevent blocked follicles and can improve both comedonal and inflammatory acne.
Limit: Irritation is common during introduction, and pregnancy-related restrictions require professional guidance.
Benzoyl peroxide
Helps reduce inflammatory acne and is often combined with other treatments.
Limit: It can dry or irritate skin and bleach fabrics; lower strengths may be easier to tolerate.
Azelaic acid or salicylic acid
Azelaic acid may help acne and post-acne discoloration; salicylic acid may help loosen material within clogged pores.
Limit: Results vary, irritation is possible, and neither replaces medical care for deep or scarring acne.
Prescription combinations or oral treatment
Topical combinations, oral antibiotics, hormonal options or isotretinoin may be appropriate depending on severity and individual circumstances.
Limit: These require clinician selection, monitoring and attention to pregnancy and medicine-specific safety rules.
Supportive skincare
A simple routine while acne is being managed
Supportive skincare should improve comfort and treatment tolerance. It does not replace the selected acne treatment.
Morning
- Cleanse gentlyUse a mild cleanser and lukewarm water without scrubbing.
- Apply treatment if directedFollow the product label or clinician’s instructions.
- Moisturise and protectUse a comfortable non-comedogenic moisturiser and broad-spectrum sunscreen.
Evening
- Remove sunscreen and makeupCleanse once without rough cloths or brushes.
- Use the selected acne treatmentIntroduce gradually when appropriate and avoid combining several new actives at once.
- MoisturiseSupport the skin rather than trying to dry every lesion out.
Common mistakes
What can make acne harder to assess or manage
- Scrubbing, squeezing or picking lesions, which can worsen inflammation, marks and scarring.
- Starting several strong treatments at the same time and then being unable to identify the cause of irritation.
- Stopping treatment after a few days because improvement is not immediate.
- Using topical or oral antibiotics alone for prolonged periods without appropriate clinical guidance.
When professional help makes sense
Seek assessment when the risk of scarring or treatment complexity is rising.
- Deep, painful nodules, widespread inflammation or rapidly worsening acne
- Scarring, persistent dark marks or major impact on confidence and wellbeing
- No meaningful improvement after a consistent evidence-based treatment period
- Pregnancy, pregnancy planning, suspected medicine-related acne or a need for prescription treatment
Related reading
Continue with the next useful question
Editorial record
What this page knows, and what remains uncertain
Evidence summary
Current clinical guidelines and authoritative dermatology information support gentle skincare, lesion-specific treatment, combination therapy when appropriate and early referral for scarring or severe acne.
Review status
Financial transparency
No paid product placement or affiliate ranking is included on this foundation page.
Recommendation logic
Options are organised by lesion type, severity, tolerability, safety limits and the point at which professional care becomes more appropriate.
Frequently asked questions
Short answers to common questions
How long does acne treatment take to work?
Many treatments need several weeks of consistent use, and guideline-based first courses are often assessed over about 12 weeks. Early irritation or one new spot does not reliably show whether a plan will work.
Should acne be dried out?
No. Excessive drying can worsen irritation and reduce treatment tolerance. Acne-prone skin can still benefit from an appropriate moisturiser.
When is acne considered severe?
Deep painful lesions, widespread inflammation, scarring or a major effect on wellbeing are reasons to seek professional assessment rather than escalating products alone.
Sources reviewed
Guidance behind this page
- NICE: Acne vulgaris—management
- American Academy of Dermatology: Acne clinical guideline
- NIAMS: Acne overview, symptoms and causes
- NIAMS: Acne diagnosis, treatment and self-care
Sources support general editorial guidance. They do not replace regional product labels, prescribing information or personal medical assessment.