What actually works for acne
Four ingredients with real evidence, matched to the kind of breakout you have.
Match the ingredient to the lesion
Acne is not one thing, and the ingredient that clears blackheads is not the one that clears cysts.
Blackheads and clogged pores — salicylic acid. It is oil-soluble, so it gets down inside the pore where the plug is. A leave-on 2% liquid, two or three nights a week.
Red, inflamed spots and pustules — benzoyl peroxide. It kills the bacteria involved directly, and resistance never develops. 2.5% works about as well as 10% with much less dryness.
Persistent, recurring breakouts — adapalene. A true retinoid, available without prescription, that stops comedones forming in the first place. This is the one that changes the trajectory rather than treating what has already appeared.
Deep, painful cysts — see a doctor. Topicals are not the answer, and cystic acne scars. Prescription options work.
The four to six week rule
Every one of these takes four to six weeks to show meaningful change, and adapalene often looks worse before it looks better. The most common reason people conclude that "nothing works" is abandoning a product at week three.
Pick one approach and commit to eight weeks before judging it.
Purging is real, but it is not universal
Retinoids purge because they accelerate turnover, pushing already-forming comedones to the surface faster. This happens where you normally break out and settles by week six.
Benzoyl peroxide and salicylic acid do not purge. If they are breaking you out, they are breaking you out.
What to stop doing
Over-washing. Twice a day maximum. Acne is not a hygiene problem, and stripping the skin drives more oil production.
Scrubs. Physical scrubs on inflamed acne rupture lesions and spread the inflammation.
Stacking everything. Benzoyl peroxide plus an acid plus a retinoid plus a clay mask is how you end up with a damaged barrier on top of the acne you started with.
Skipping moisturiser. Dehydrated skin overproduces oil. Every acne treatment listed here is drying, and a moisturiser makes them tolerable enough to keep using.
When to see a doctor
Cystic or nodular acne. Scarring. Acne that has not improved after three months of consistent over-the-counter treatment. Acne causing real distress.
Prescription treatment — topical or oral — is markedly more effective, and waiting it out risks permanent scarring.
Ingredients mentioned
Salicylic acid
An oil-soluble exfoliant that gets inside the pore and clears out the plug.
Adapalene
A third-generation retinoid, available without prescription, that is unusually stable and acne-focused.
Benzoyl peroxide
Kills acne bacteria directly, and unlike antibiotics they cannot become resistant to it.
Azelaic acid
Unusually versatile and unusually gentle — and one of the few actives considered safe in pregnancy.
Keep reading
Want this applied to your own skin?
The quiz turns all of this into a specific routine, with the reasoning shown for every choice.
Take the quizRoutine is educational and is not medical advice. Recommendations are generated from the answers you gave and general dermatological guidance — they cannot account for your full history. For persistent or severe skin conditions, or before starting anything new during pregnancy, speak to a doctor or dermatologist.