Clear, honest information about acne, skin and what actually helps
Written by careful researchers who read the studies. We are not dermatologists — and we say so on every page.
Acne Cut Editorial Team 
Azelaic acid calms redness and inflammation, helps unclog pores, slows down the pigment-making cells that cause dark marks, and has some effect on acne-related bacteria. It comes in over-the-counter and prescription strengths and is generally considered one of the gentler active ingredients available. What is azelaic acid, exactly? Azelaic acid is a naturally occurring acid … Read more
Retinol is a form of vitamin A sold over the counter in ordinary skincare products, usually at lower strengths. A prescription retinoid is a stronger, medically regulated form of the same vitamin A family, available only through a doctor, and it typically requires monitoring because of how much more active it is on the skin. … Read more
Niacinamide is a form of vitamin B3 used in skincare to help calm redness, support the skin’s outer barrier, and regulate oil production. It’s found in serums and moisturisers and is generally considered one of the gentler active ingredients, though it isn’t a cure for acne on its own and works best as part of … Read more
Benzoyl peroxide works by releasing oxygen into the skin, which creates an environment that acne-causing bacteria can’t tolerate well. It also helps clear away dead skin cells that can clog pores. It doesn’t treat oil production or hormones, which is why it often gets paired with other ingredients. What is benzoyl peroxide, in plain terms? … Read more
Salicylic acid works by loosening the glue-like buildup of dead skin cells inside a pore, so blocked follicles are less likely to clog and oil can move more freely. It also has a mild anti-inflammatory effect on the skin’s surface. It does not stop acne forming at the source, and it is not a cure … Read more
Rebuilding a damaged skin barrier generally means stripping a routine back to the basics — a gentle cleanser, a plain moisturiser, and sun protection — while pausing exfoliants and strong actives. Most people notice some settling within a few weeks, though how long it takes varies a lot from one person to the next. How … Read more
Yes. Acne-prone skin needs sunscreen just as much as any other skin type — arguably more, since many acne treatments make skin more sensitive to UV light. The idea that sunscreen clogs pores or “suffocates” skin is largely outdated; the real issue is picking a formula that suits oily or breakout-prone skin. Why does acne-prone … Read more
Over-exfoliating wears down the outer layer of skin faster than it can rebuild itself. This weakens the skin barrier, leading to redness, tightness, stinging, peeling, and sometimes more breakouts rather than fewer, because irritated, compromised skin is more reactive and often produces more oil to compensate. What is actually happening to the skin when it’s … Read more
Yes, but not by much. The core steps — cleanse, treat, moisturise — stay the same morning and night. The real differences are usually just one thing: sunscreen in the morning, and sometimes a stronger active (like a retinoid) at night, because some ingredients break down in sunlight or make skin more sun-sensitive. Do mornings … Read more
Skin purging is a temporary increase in breakouts that can happen when a product speeds up skin cell turnover, pushing existing clogged material to the surface faster than usual. A bad reaction is different: it’s irritation or new breakouts caused by a product that doesn’t suit the skin, and it tends to keep getting worse … Read more
8 of 26 letters have an entry so far. We would rather show the gaps than pad the index.
Written by careful researchers who read the studies. We are not dermatologists, and we say so on every page.
Medical disclaimer. Acne Cut publishes general information about skin and acne. It is not medical advice, it is not a diagnosis, and it is not a substitute for speaking to a doctor or pharmacist about your own skin. We do not recommend prescription treatments or give doses. If your acne is painful, scarring, getting worse, or affecting how you feel day to day, please talk to a doctor — going early is not an overreaction.
About what you read here. Everything on Acne Cut is general information and our own editorial opinion. We research carefully and we say when the evidence is unclear, but we can be wrong, things change, and no article can know your particular situation. Please do your own research and make your own judgement rather than treating anything here as the final word. This is not medical advice, not a diagnosis, and not a substitute for speaking to a doctor or dermatologist about your own acne and skin. We are writers and researchers, not clinicians. We do not recommend prescription treatments or give doses. If something is painful, getting worse, or worrying you, please talk to a professional — going early is not an overreaction.