For red, inflamed pimples on the back, chest or shoulders, a benzoyl peroxide body wash is the usual first choice. Lather it on at the start of your shower, leave it for two to five minutes, then rinse, as the American Academy of Dermatology advises. If benzoyl peroxide irritates your skin or you can’t stand bleached towels, a 2% salicylic acid body wash is a gentler alternative, though it has weaker evidence. If your “acne” is very itchy and all the bumps look the same, it may not be acne at all (more on that below).
Body acne develops the same way as facial acne: follicles clog with oil and dead skin, bacteria multiply, and inflammation follows. The back and chest have plenty of oil glands, and sweat, heat and friction from tight clothing or backpacks can make things worse. The difference is practical: it’s hard to apply a leave-on cream to your own back, which is why washes are so useful here.
We don’t test products hands-on. The washes below were chosen using the criteria explained further down and the manufacturers’ published details.
Benzoyl peroxide vs salicylic acid for body acne
| Feature | Benzoyl peroxide wash | Salicylic acid wash |
|---|---|---|
| OTC strength (FDA M006) | 2.5%–10% | 0.5%–2% |
| Main action | Kills acne bacteria; reduces inflamed pimples | Loosens dead skin that clogs pores |
| 2024 AAD guideline | Strong recommendation | Conditional recommendation (low-certainty evidence) |
| Best for | Red pimples and pustules | Blackheads, whiteheads, rough bumps |
| Bleaches fabric? | Yes | No |
| Contact time | About 2–5 minutes on the back (AAD) | Follow the label; rinse off |
Why contact time matters
A wash only works while it’s on your skin. The AAD says studies show benzoyl peroxide works best if left on the back for two to five minutes, and that rinsing it off also protects your clothes and sheets from bleaching.
The research behind this “short contact” approach is small but consistent. In one study, a 9.8% benzoyl peroxide foam applied to the back and rinsed off after a short time reduced acne bacteria on the skin. A 2022 lab study found that 5% and 10% benzoyl peroxide killed Cutibacterium acnes after much shorter contact than lower strengths.
A simple shower routine:
- Wet your skin, then apply the wash to your back, chest and shoulders first.
- Leave it on while you wash your hair, shave or use a separate cleanser elsewhere.
- After two to five minutes, rinse thoroughly, including your neck and hairline.
- Pat dry with a white towel.
A long-handled shower brush or back scrubber can help you reach, but go gently. Rubbing hard can irritate skin and worsen acne.
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Which strength?
The FDA’s acne monograph allows over-the-counter benzoyl peroxide up to 10%, the highest strength available without a prescription. The AAD notes that a lower strength, such as 5.3%, is less likely to cause irritation, dryness or peeling, while a 10% foaming wash is the option if you need something stronger.
The back and chest usually tolerate higher strengths better than the face. A reasonable plan:
- Start with 10% on the back if your skin isn’t sensitive, since it’s rinsed off.
- Step down to a 4% to 5% wash if you get dryness, itching or peeling.
- Use a lower strength on the chest and neck, where skin is thinner, if 10% stings.
Our benzoyl peroxide strength guide covers the studies comparing 2.5%, 5% and 10%.
How we chose these body washes
We don’t run hands-on tests, score products or publish reviews. We looked for washes that:
- List benzoyl peroxide or salicylic acid as the active ingredient in the Drug Facts panel, within FDA monograph limits.
- Come in formats that work on the body, such as larger tubes or bottles and foaming or rinse-off textures.
- Include a lower-bleach option for people who can’t use benzoyl peroxide.
- Are widely available in the U.S.
- Weren’t on the FDA’s March 2025 benzene recall list when we last checked.
No company can pay to be included. We may earn a commission from links, as explained in the disclosure at the top of this page.
Body washes worth considering
Benzoyl peroxide washes
PanOxyl
Acne Foaming Wash 10% Benzoyl Peroxide
- Active ingredient
- Benzoyl peroxide 10%
- Size
- 5.5 oz
- May suit
- Inflamed back, chest and shoulder acne
Why it's here
- Maximum OTC strength, labeled for face and body
- Foams easily, which helps cover a large area
Things to know
- Bleaches towels, sheets and shirts
- A 5.5 oz tube goes quickly on the body
- Like any benzoyl peroxide product, check the lot against our benzene tracker before buying and store it somewhere cool
CeraVe
Acne Foaming Cream Wash 10% Benzoyl Peroxide
- Active ingredient
- Benzoyl peroxide 10%
- Size
- 5 fl oz
- May suit
- People who want 10% in a creamier, less stripping texture
Why it's here
- Sold for face and body
- The maker lists hyaluronic acid and niacinamide in the formula
Things to know
- Bleaches fabric
- Smaller tube than typical body washes
humane
Benzoyl Peroxide 10% Acne Wash
- Active ingredient
- Benzoyl peroxide 10%
- Size
- 8 fl oz
- May suit
- People who want a larger bottle for body use
Why it's here
- Larger bottle than most benzoyl peroxide washes
- Non-foaming, which some people find easier to leave on for a few minutes
Things to know
- Bleaches fabric
- Non-foaming washes can feel harder to spread
A salicylic acid alternative
Neutrogena
Body Clear Body Wash
- Active ingredient
- Salicylic acid 2%
- Size
- 8.5 fl oz
- May suit
- Blackheads and rough bumps, or anyone who can't use benzoyl peroxide
Why it's here
- Doesn’t bleach towels or clothing
- Full 2% monograph strength in a regular body-wash format
Things to know
- Weaker evidence than benzoyl peroxide for inflamed acne
- Some versions are fragranced; check the label if that matters to you
Sample body-acne routines
Mostly red pimples on the back and shoulders:
- In the shower: 10% benzoyl peroxide wash on the back and shoulders, left on for two to five minutes, then rinsed.
- After: a light, noncomedogenic body lotion if your skin feels tight.
- Laundry: white towels and sheets; old or white T-shirts for bed.
Sensitive chest skin plus a breakout-prone back:
- A 4% to 5% benzoyl peroxide wash, or a 2% salicylic acid body wash, on the chest.
- 10% benzoyl peroxide wash on the back.
Rough bumps and blackheads, few inflamed spots:
- 2% salicylic acid body wash, once a day, with a body moisturizer afterward.
After workouts: shower and change as soon as you can. If that isn’t possible, change out of damp clothes and rinse off at the next chance.
Give any routine about 8 to 12 weeks. If you’re also using a leave-on treatment on your body, such as adapalene, add one product at a time and watch for irritation.
Everyday habits that help body acne
These habits are commonly recommended by dermatologists for body acne:
- Shower and change soon after sweating. Sweat, heat and damp workout clothes can contribute to breakouts.
- Reduce friction. Tight straps, backpacks, sports equipment and snug synthetic fabrics can trigger acne mechanica, a type of acne caused by rubbing and pressure.
- Wash gently. The AAD warns that scrubbing skin with acne can make it worse, so skip rough loofahs and harsh exfoliants.
- Choose non-comedogenic body products, including sunscreen and moisturizer on the back and chest.
- Don’t pick. Picking increases the risk of dark marks and scars. For a single surfaced spot, a hydrocolloid pimple patch can stop you touching it.
Is it really acne? Look-alikes to know
Not every bumpy back is acne. The most common look-alike is Malassezia (Pityrosporum) folliculitis, sometimes called “fungal acne.” It’s caused by an overgrowth of yeast in hair follicles, and it tends to look like:
- Itchy bumps (acne usually isn’t very itchy)
- Small, uniform red bumps or pustules that all look alike, rather than a mix of blackheads, pimples and deeper spots
- On the chest, upper back, shoulders and upper arms, often worse with heat and sweat
Acne washes don’t treat it, because it’s caused by yeast, not acne bacteria. Clinicians usually treat it with topical or oral antifungal medicines. If your “back acne” is itchy, uniform and hasn’t improved with a benzoyl peroxide wash after several weeks, see a clinician for a diagnosis rather than trying stronger acne products.
Side effects and safety
- Dryness and irritation: cut back to every other day, or step down in strength.
- Bleaching: use white towels, sheets and shirts, and let skin dry fully before dressing.
- Rare allergic reactions: in 2014 the FDA warned that OTC acne products containing benzoyl peroxide or salicylic acid can rarely cause serious allergic reactions. Get emergency help for throat tightness, trouble breathing, feeling faint, or swelling of the face, eyes, lips or tongue.
- Benzene: in 2025, specific lots of a few benzoyl peroxide products were recalled after FDA testing. Check your lot in our benzoyl peroxide benzene tracker, store washes somewhere cool rather than a hot bathroom windowsill or car, and throw out expired product. Our explainer on benzoyl peroxide and benzene has the details.
If you’re also treating your face, our guides to benzoyl peroxide face washes and salicylic acid cleansers cover gentler facial options. You can check whether your products clash with our ingredient conflict checker.
When to see a dermatologist
Body acne often needs more than a wash. See a clinician if:
- You have deep, painful lumps or cysts, or acne is leaving scars or dark marks
- There’s no clear improvement after 8 to 12 weeks of consistent use
- The bumps are very itchy or uniform (possible fungal folliculitis)
- Acne appeared suddenly, especially alongside new medicines, supplements or hormonal symptoms
Prescription options for body acne include topical retinoids suited to large areas and oral medicines. Our free acne treatment quiz suggests whether over-the-counter care, an adult online service, or an in-person dermatologist is the best next step.