Blackheads and whiteheads (comedonal acne)
Blackheads (open comedones) and whiteheads (closed comedones) form when a hair follicle gets clogged with excess sebum and dead skin cells. In blackheads the plug is exposed to air and oxidizes to a dark color; in whiteheads the pore stays closed, so it stays white. They cluster on the nose, chin, and forehead because these areas have the highest density of oil (sebaceous) glands - the classic "T-zone."
What actually works
1. Topical retinoids - the most effective option
Retinoids (adapalene, tretinoin, tazarotene) normalize how skin cells shed inside the follicle, which is the core defect causing comedones. They both clear existing blackheads/whiteheads and prevent new ones from forming - - Dermatology 2-Volume Set, p. 2758; Harrison's Principles of Internal Medicine 22E, p. 1897. Adapalene 0.1% gel is available over the counter (Differin); start 2-3 nights/week and build up, since it can cause dryness and peeling initially.
2. Salicylic acid (BHA)
Oil-soluble, so it penetrates into the pore itself and dissolves the sebum plug. Found in cleansers, toners, and spot treatments (0.5-2%). Good for daily maintenance alongside a retinoid.
3. Benzoyl peroxide
Also comedolytic and useful if you have any inflamed pimples mixed in with the comedones, not just pure blackheads/whiteheads.
4. Gentle, consistent routine
- Cleanse twice daily with a mild, non-comedogenic cleanser (avoid harsh scrubbing, which irritates skin and can worsen oil production)
- Use a non-comedogenic, oil-free moisturizer and sunscreen (retinoids increase sun sensitivity)
- Avoid pore strips and picking/squeezing - this is repeatedly flagged as causing more harm (inflammation, scarring) than benefit
- Give any regimen 8-12 weeks before judging results; comedonal turnover is slow
5. Professional extraction
For deep or persistent comedones, a dermatologist can perform manual comedo extraction with sterile tools. Textbooks note this works best when combined with a topical retinoid, and some clinicians pretreat with a retinoid for a few weeks first to loosen the plug before extracting - - Dermatology 2-Volume Set, p. 2952; Fitzpatrick's Dermatology Vol 1/2, p. 159.
6. When to see a dermatologist
- If comedones are extensive, keep recurring quickly, or are mixed with painful cysts/nodules
- If OTC salicylic acid + retinoid for 2-3 months hasn't helped
- They may add azelaic acid, prescription-strength retinoids, or in some cases hormonal therapy (e.g., spironolactone in appropriate candidates) - a recent 2025 meta-analysis supports spironolactone's effectiveness and safety for acne, though it's more relevant if you also have inflammatory lesions, not pure comedones.
A simple starting routine
- Morning: gentle cleanser -> oil-free moisturizer -> sunscreen (SPF 30+)
- Night: gentle cleanser -> pea-sized amount of adapalene 0.1% gel (start every other night) -> moisturizer
- Add a salicylic acid cleanser or toner on the mornings you skip retinoid, or use a leave-on 2% salicylic acid product a few times a week
Do not combine retinoid and benzoyl peroxide/salicylic acid heavily at first - introduce one active at a time to avoid excessive dryness and irritation.
If you want, tell me your skin type (oily/dry/sensitive) and whether you have any inflamed pimples too, and I can tailor the product choices and sequencing more specifically.