Salicylic Acid for Skin: What Skincare Experts Say
The oil-loving acid for blackheads, clogged pores and breakouts. What it does, what the research shows, how strong it can legally be, and what 13 skincare experts said about it on camera.
Salicylic acid is usually the first thing people grab when their skin starts breaking out. Then the questions start. Is it an AHA or something else? Why is it in your cleanser, your toner and your moisturiser all at once? Should you wash it off or leave it on? Will it dry you out? And is it safe in pregnancy, when it is a close cousin of aspirin?
Happily, the experts we follow are on its side for oily, congested and acne-prone skin. It mixes with oil, so it can work its way down into a clogged pore, which is why it is the one to reach for with blackheads and whiteheads.
Salicylic acid's own Guru Score is 92%, from 32 mentions by 13 experts, among them dermatologists, a medical esthetician and a skincare consultant. Their doubts are about how you use it: it can dry the skin, it hides in lots of products at once, and it is easy to stack too much. Below, what the experts said sits next to what the studies and regulators say, so you can see where the two line up.
The quick answer
Salicylic acid is an oil-soluble exfoliating acid used to unclog pores, so it is mainly for blackheads, whiteheads and mild acne. The experts we follow recommend it, with their worries aimed at dryness and doubling up rather than at the acid itself. In the US it is an approved over-the-counter acne medicine at 0.5% to 2% [1], and the American Academy of Dermatology says it works best on whiteheads and blackheads [9]. The main downside is dryness and irritation, which is more likely if you use another acne product at the same time [2].
Before you buy
What to look for in a salicylic acid product
0.5% to 2% for acneThat is the US over-the-counter range [1], and most EU skincare is capped at 2% [4]. Higher strengths are for clinic peels [5].
Wash-off or leave-onA leave-on spends longer on your skin, while a cleanser is gentler. If you pick a wash, let it sit for a while before you rinse.
What else is in your routineIt hides in cleansers, toners, moisturisers and spot treatments, and two acne medicines at once make dryness more likely [2].
Body sprays away from your faceEU rules keep it out of sprays that could be breathed in [4], so keep a body spray well away from your face.
Salicylic acid at a glance
Question
What we found
What is it used for?
Blackheads, whiteheads, clogged pores and mild acne, on the face and body. It is also a dandruff shampoo ingredient [1, 3].
Do skincare experts recommend it?
Yes, for blackheads, whiteheads and oily skin. Their worries are dryness and doubling up.
How strong is it?
0.5% to 2% in US over-the-counter acne products [1]. EU cosmetics rules cap most products at 2%, and rinse-off hair products at 3% [4].
Is it an AHA?
No. It is usually called a BHA (beta hydroxy acid). Unlike glycolic acid, it is fat soluble, which suits oily skin [6].
Does it irritate?
It can dry the skin. Start with one application a day and build up only if your skin is comfortable [2].
Is it safe in pregnancy?
Low-strength skincare is generally considered acceptable, but salicylic acid peels are not recommended. Ask your doctor or midwife [5, 12].
Salicylic acid for skin: what does it do?
Salicylic acid is an exfoliating acid. It loosens the bonds that hold dead skin cells together, so they shed more easily instead of building up into a plug [5]. That plug of dead cells and oil is what a blackhead or whitehead is.
What sets it apart from acids like glycolic and lactic is that it is fat soluble [6]. Because it mixes with oil, it can follow sebum down into the pore and concentrate there, which is why it is used so widely for acne and comedones [5]. It also has some anti-inflammatory action, being a close chemical cousin of aspirin [5].
You will almost always see it called a BHA, or beta hydroxy acid, and that is how our experts describe it. Strictly speaking, chemists point out that it does not behave like a true beta hydroxy acid [6]. The label has stuck anyway, and for choosing products it does no harm.
The short versionSalicylic acid is an oil-loving exfoliant. It loosens the dead cells that clog pores, which is why it suits blackheads, whiteheads and oily skin.
What do skincare experts say about salicylic acid?
Here is what each of them said on camera, with a link to the moment they said it.
A big fan because it slips into an oily pore and breaks up the plug that makes a blackhead.
I'm a big fan of salicylic acid. It actually can get into the pore really easily because it's oil loving, so it just has a tendency to fall right in there, and then it actually precisely goes in and breaks up some of that stuff that is sticking together those dead cells and causing the plug. With consistent use, it can help keep the lining of the pores smooth and cut down on pore clogging.Watch ▸
Her number one acid for acne, because it is oil soluble and unclogs the pore.
Salicylic acid is my absolute number one go-to for topical acid when it comes to treating acne. It is a BHA or a beta hydroxy acid which means that it is oil soluble so it specifically gets absorbed down into the oil gland or the pore where it breaks up that acne causing debris and it will unclog your pore.Watch ▸
Points oily, acne-prone skin to a BHA for congestion, pores and texture.
The BHA or beta hydroxy acid is going to be ideal for someone with more oily acne prone skin because it's oil loving and really can dive deep into your pores. [...] It's fantastic if you're needing to minimize your pores, get rid of some congestion and improve the texture of your skin.Watch ▸
Rates it, but warns it is very drying, and that severe acne needs a dermatologist rather than more salicylic acid.
salicylic acid is a very drying product. What I would say is you do need to see a dermatologist for this because you're probably going to need isotretinoin, which is a prescription only medicationWatch ▸
Warns against doubling up: no extra salicylic acid on top of an AHA and BHA peel.
Something like glycolic acid or more Salicylic Acid you absolutely want to avoid because even though this says AHA BHA, AHAs are things like glycolic acid and BHA is Salicylic Acid so you don't want to be using this and then use a Salicylic Acid cream or use a Salicylic Acid moisturizer and totally double up.Watch ▸
Key takeawayThe experts reach for salicylic acid for oily, clogged and acne-prone skin. Their warnings are about dryness, doubling up, and pregnancy.
Where do the experts agree?
The experts are on its side, so the caveats are where the useful detail sits.
Where they agree
It is the oil-loving acid: the one to reach for with blackheads, whiteheads and oily, clogged skin.
It works in many formats, from cleansers and leave-ons to body washes and dandruff shampoos.
It earns a place as a steady, everyday treatment rather than a quick fix.
The caveats
It can dry the skin, and stacking it with other acne treatments makes that more likely [2].
It hides in lots of products at once, so check labels before you add another.
Severe or scarring acne needs a doctor, not more salicylic acid.
In pregnancy the experts disagree, and the research on acne treatments in pregnancy is sparse [12].
What does the research say about salicylic acid?
Salicylic acid has official standing as an acne medicine. In the US it is one of a handful of active ingredients allowed in over-the-counter acne products, at 0.5% to 2% [1]. The American Academy of Dermatology's 2024 acne guidelines give it a conditional recommendation, a step below the strong recommendations they make for benzoyl peroxide and topical retinoids [8].
That fits what it is good at. The American Academy of Dermatology says it works best on whiteheads and blackheads, because it unclogs pores and exfoliates, while benzoyl peroxide is especially effective on mild pimples [9]. In one small four week crossover study in 30 people with acne, only the 2% salicylic acid cleanser significantly reduced comedones when compared with a 10% benzoyl peroxide wash [10]. It is an old and small study, so treat it as a hint rather than proof.
The main side effects are on the skin: dryness and irritation. US acne labels must warn that these are more likely if you use another topical acne medicine at the same time [2]. Serious problems are rare. Salicylic acid is absorbed through the skin, and poisoning from it (called salicylism) has been reported, mostly with high strengths over large areas of the body [5, 11]. Absorption goes up under occlusion, meaning when the skin is covered [5].
One worry the research does not back is sun sensitivity. In a small study, 3.5 weeks of 10% glycolic acid made skin more sensitive to UV light, while 2% salicylic acid did not [7]. Sunscreen is still a good idea for any skin being treated for acne or marks.
The thing to rememberA recognised over-the-counter acne medicine, best for blackheads and whiteheads. It is not the strongest acne treatment, and dryness is the side effect to watch.
How strong should salicylic acid be, and is it safe in pregnancy?
Strength is set by law. In the US, over-the-counter acne products can contain 0.5% to 2% salicylic acid [1], and dandruff and seborrhoeic dermatitis products 1.8% to 3% [3]. In the EU, rules in force since 2020 cap it at 3% in rinse-off hair products and 2% in most other products, ban it in products for children under 3 (shampoo aside), and keep it out of sprays that could be breathed in [4]. Professional peels use far higher strengths, and those belong in a clinic [5].
Salicylic acid in pregnancy
The medical sources are reassuring about low strengths, with some limits.
The research leans towards the middle. A 2023 review of acne treatment in pregnancy says topical salicylic acid is considered safe in pregnancy and breastfeeding because so little is absorbed, with one caveat: avoid applying it over large areas for long periods, or under a covering [12]. The same review notes that the data on acne treatments in pregnancy are sparse [12]. Salicylic acid peels are a different matter, and a review of peels advises against them in pregnancy because salicylic acid is so closely related to aspirin [5].
Oral aspirin is a medicine, not skincare, so its rules do not carry over to a face wash. If you are pregnant or breastfeeding, check any acne treatment with your doctor or midwife first.
If you remember one thingUp to 2% for leave-on skincare in the US and most EU products. In pregnancy, low-strength products on small areas are generally considered acceptable, peels are not, and your doctor has the final say.
How do you use salicylic acid in a skincare routine?
US acne labels give a simple rule: cleanse first, apply a thin layer, and because it can dry the skin, start with once a day and build up to two or three times only if you need to [2]. Cut back if your skin gets dry or peels [2].
Cleanser or leave-on?
Both have fans among our experts. The Budget Dermatologist prefers a simple leave-on at 2%, and suggests a cleanser or a lower strength if your skin is sensitive. Dr. Shereene Idriss and Dr Dray both say to let a salicylic acid wash sit on the skin for a while before rinsing, so the active gets time to work. We found no study comparing the two head to head.
Morning or night?
Either. Some of our experts prefer bedtime for exfoliating acids, others use salicylic acid in the morning before moisturiser. Pick the slot where it does not clash with your other actives, and wear sunscreen in the day.
Body and back
Salicylic acid body washes and sprays are a common choice for breakouts on the back, chest and shoulders. Dr Dray suggests lathering a body wash on the back and leaving it a while before rinsing. If you use a spray, keep it away from your face and do not breathe it in.
Scalp and dandruff
Salicylic acid is an approved dandruff shampoo ingredient in the US [3], and the American Academy of Dermatology lists it among the actives to look for [13]. It lifts flakes, but Dr Dray points out that it does not tackle the yeast behind seborrhoeic dermatitis, so she pairs it with an antifungal shampoo such as ketoconazole on other days. The academy also suggests alternating shampoos with different actives if one is not working [13].
Worth knowingStart once a day, build up slowly, and check every product in your routine for it so you do not double up.
What can you use salicylic acid with?
The rule that matters most with salicylic acid is not to stack exfoliants by accident. It hides in cleansers, toners, moisturisers and spot treatments, so read the labels before you add another.
Salicylic acid vs benzoyl peroxide
They do different jobs. Salicylic acid is best at clearing blackheads and whiteheads, while benzoyl peroxide is especially good at mild pimples [9], and acne guidelines rate benzoyl peroxide more strongly [8]. Plenty of people use both, but irritation is more likely when you use two acne medicines together [2], so try them at different times of day or on alternate days. Our benzoyl peroxide guide has more.
Salicylic acid vs glycolic acid
Glycolic acid is an AHA. Salicylic acid is fat soluble, which is why it suits oily, clogged skin [6], and in one study it did not raise sun sensitivity the way glycolic acid did [7]. Dr Dray finds salicylic acid often better tolerated than AHAs. Cassandra Bankson warns against using the two in the same routine without meaning to. Our glycolic acid guide has more.
Salicylic acid with retinoids
Some of our experts recommend salicylic acid alongside a retinoid such as adapalene for blackheads. Both can dry the skin, and the dryness adds up [2]. Let your skin settle into one first, then bring the other in on alternate nights.
Salicylic acid and niacinamide
A common pairing in acne-prone routines, and The Budget Dermatologist likes salicylic acid cleansers that add niacinamide and ceramides to stop them drying her skin. We found no trial of the pair, so think of niacinamide as a comfortable companion rather than a booster.
The experts' picks, by what you need
The best one for you depends on your skin and your budget, so here is the top-rated pick for each need, from the products below.
A high score for the ingredient does not carry over to every product that contains it. Strength, formula and what else is in the bottle all change the verdict. These are the highest-scoring salicylic acid products that at least three experts have rated, ranked by Guru Score.
Salicylic acid loosens the dead skin cells that clog pores, so it helps clear blackheads, whiteheads and mild acne. Because it is fat soluble, it can work its way into oily pores, which is why it suits oily and acne-prone skin [5, 6]. The skincare experts we follow recommend it.
02
Does salicylic acid help with blackheads?
Yes, blackheads and whiteheads are what it is best at. The American Academy of Dermatology says it works best on them because it unclogs pores and exfoliates the skin [9]. Our experts agree: Dr Dray says it breaks up the plug of stuck dead cells, and The Budget Dermatologist calls it her number one acid for acne.
03
Can you use salicylic acid every day?
Many people can, but build up to it. US acne labels advise starting with one application a day and increasing to two or three only if needed, because it can dry the skin [2]. If your skin gets dry, tight or flaky, use it less often, and check you are not getting it from several products at once.
04
What percentage of salicylic acid is best?
For acne, 0.5% to 2% is the over-the-counter range in the US [1], and most EU skincare is capped at 2% [4]. The Budget Dermatologist goes for 2% but suggests a lower strength or a cleanser if your skin is sensitive. Higher strengths are for professional peels in a clinic [5].
05
Is a salicylic acid cleanser or leave-on better?
A leave-on spends longer on your skin, while a cleanser is gentler and easier to fit in. We found no study comparing them head to head. If you use a wash, Dr. Shereene Idriss and Dr Dray both suggest letting it sit on the skin for a while before rinsing so the active has time to work.
06
Salicylic acid vs benzoyl peroxide: which is better?
They suit different spots. Salicylic acid is best for blackheads and whiteheads, while benzoyl peroxide is especially good at mild pimples [9]. The 2024 American Academy of Dermatology guidelines rate benzoyl peroxide more strongly for acne [8]. You can use both, but irritation is more likely with two acne medicines at once [2], so split them across the day.
07
Salicylic acid vs glycolic acid: what is the difference?
Salicylic acid is fat soluble, so it suits oily skin and clogged pores [6]. Glycolic acid is an AHA, more often used for texture and dullness. In one small study, glycolic acid made skin more sensitive to UV while salicylic acid did not [7]. Using both at once raises the risk of irritation, which is Cassandra Bankson's warning.
08
Can you use salicylic acid with retinol or adapalene?
Yes, and some of our experts pair salicylic acid with a retinoid for blackheads. Both can dry the skin, and using two acne treatments together makes irritation more likely [2]. Start one, let your skin settle, then add the other on alternate nights or at a different time of day.
09
Is salicylic acid safe during pregnancy?
Low-strength skincare is generally considered acceptable. A 2023 review says topical salicylic acid is considered safe in pregnancy and breastfeeding because little is absorbed, but advises against large areas, long use or covering it [12]. Salicylic acid peels are not recommended [5]. Ask your doctor or midwife before you start.
10
Does salicylic acid dry out your skin?
It can. Dryness and irritation are its main side effects, and they are more likely if you use another acne medicine at the same time [2]. Dr. Vanita Rattan calls it a very drying product. Use a moisturiser, start slowly, and choose a gentler cleanser format if a leave-on is too much.
11
Can you use salicylic acid on your scalp?
Yes. It is an approved dandruff shampoo ingredient in the US at 1.8% to 3% [3], and the American Academy of Dermatology lists it among the actives to look for [13]. It lifts flakes but does not tackle yeast, so Dr Dray pairs it with an antifungal shampoo such as ketoconazole on other days.
12
Can salicylic acid help body acne?
It is a popular choice for breakouts on the back, chest and shoulders, usually as a body wash or spray. Dr Dray suggests lathering a salicylic acid wash on the back and leaving it a while before rinsing. Keep large-area use sensible: absorption through the skin goes up with big areas and covering [5, 11].
13
How long does salicylic acid take to work?
Give it a few weeks of steady use before you judge it. In one small study, a 2% salicylic acid cleanser reduced comedones within two weeks [10]. Dr Dray describes the benefit as coming with consistent use, keeping pores smooth and cutting down on new clogs rather than clearing them overnight.
The experts behind the score
13 experts, 32 mentions, every one traced to a video you can watch. Sponsored takes are excluded.
US Code of Federal Regulations. 21 CFR 358.710, Active ingredients for the control of dandruff, seborrheic dermatitis, or psoriasis. law.cornell.edu/cfr/text/21/358.710
Commission Regulation (EU) 2019/1966 of 27 November 2019 amending and correcting Annexes II, III and V to Regulation (EC) No 1223/2009 of the European Parliament and of the Council on cosmetic products. legislation.gov.uk/eur/2019/1966
Arif T. Salicylic acid as a peeling agent: a comprehensive review. Clinical, Cosmetic and Investigational Dermatology, 2015. pubmed.ncbi.nlm.nih.gov/26347269/
Kornhauser A, Coelho SG, Hearing VJ. Applications of hydroxy acids: classification, mechanisms, and photoactivity. Clinical, Cosmetic and Investigational Dermatology, 2010. pubmed.ncbi.nlm.nih.gov/21437068/
Kornhauser A et al. The effects of topically applied glycolic acid and salicylic acid on ultraviolet radiation-induced erythema, DNA damage and sunburn cell formation in human skin. Journal of Dermatological Science, 2009. pubmed.ncbi.nlm.nih.gov/19411163/
Reynolds RV et al. Guidelines of care for the management of acne vulgaris. Journal of the American Academy of Dermatology, 2024. pubmed.ncbi.nlm.nih.gov/38300170/
Shalita AR. Comparison of a salicylic acid cleanser and a benzoyl peroxide wash in the treatment of acne vulgaris. Clinical Therapeutics, 1989. pubmed.ncbi.nlm.nih.gov/2525420/
Madan RK, Levitt J. A review of toxicity from topical salicylic acid preparations. Journal of the American Academy of Dermatology, 2014. pubmed.ncbi.nlm.nih.gov/24472429/
Ly S et al. Treatment of Acne Vulgaris During Pregnancy and Lactation: A Narrative Review. Dermatology and Therapy, 2023. pubmed.ncbi.nlm.nih.gov/36447117/
This guide combines two kinds of information. The expert consensus comes from 32 mentions of salicylic acid by 13 skincare experts in their YouTube videos. Each one was read, given a Yay, Mixed or Nay verdict and linked to the moment it was said. Sponsored takes are excluded. The research sections summarise published studies, regulations and medical sources, listed in full above.
The Guru Score measures how warmly the experts talk about salicylic acid. It is not a measure of clinical effectiveness, and this guide is not medical advice. It has not been reviewed by a doctor.
This guide is general information, not medical advice. The Guru Score reflects how warmly the experts we track talk about salicylic acid; it is not a measure of clinical efficacy. Speak to a dermatologist or doctor about a diagnosed skin condition, and before using any medicine.
Dr. Aanchal MD
Dr. Aleksandra Brown
Dr. Daniel Sugai
Dr. Shereene Idriss
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