Acne arises from overactive oil glands, clogged follicles, bacteria and inflammation. Start with consistent topical treatments (benzoyl peroxide, retinoids, salicylic or azelaic acid), gentle cleansing, and avoid picking or harsh products. See a clinician if acne is severe, scarring, or unresponsive after 6-12 weeks.
What acne is and why it happens
Acne results when sebaceous (oil) glands, hair follicles and skin bacteria interact to cause inflammation. Hormones - especially androgens - increase sebum production, which is why acne is common in puberty and can persist into adulthood. Up to about 85% of people develop acne at some point in life .
Acne shows as blackheads, whiteheads, pimples, and in more severe cases, nodules or cysts. Picking or squeezing lesions, stress, and certain hair or skin products can make acne worse.
Basic, evidence-based treatments
Topical treatments are first-line for most mild-to-moderate acne. Try one of these active ingredients, used consistently on affected areas:
- Benzoyl peroxide - antimicrobial and anti-inflammatory. Use in washes, gels, or creams.
- Topical retinoids (adapalene is available over the counter in many places) - normalize follicle cell turnover and improve comedones.
- Salicylic acid - helps unclog pores and reduce blackheads.
- Azelaic acid - reduces inflammation and bacteria and can help with post-inflammatory discoloration.
Tea tree oil has modest evidence for mild acne for some people, but it can irritate sensitive skin and should be used cautiously.
When to see a clinician
See your primary care doctor or a dermatologist if acne is moderate-to-severe, painful, leaving scars, or not improving after 6-12 weeks of consistent topical use. Clinicians may prescribe oral options (antibiotics, combined oral contraceptives for women, spironolactone) or isotretinoin for severe cystic acne.
Daily care and things to avoid
- Cleanse gently once or twice daily with a mild, non-comedogenic cleanser (for example, fragrance-free formulas such as Cetaphil-style cleansers).
- Avoid scrubbing, abrasive exfoliants, and alcohol-based toners - they increase irritation.
- Remove makeup before bed and use non-comedogenic cosmetics.
- Avoid leaving sweaty clothes on and clean reusable makeup tools regularly.
- Minimize oily hair products near the forehead and hairline.
Managing expectations
Acne treatments often take weeks to show results. Mild cases often respond to OTC regimens; persistent or severe acne benefits from medical assessment to reduce scarring and accelerate improvement.
- Verify the cited prevalence figure ("Up to about 85% of people develop acne at some point") against current epidemiological sources.