Over-the-counter acne treatments: what to buy

An over-the-counter acne treatment is an acne medicine you can buy in a store or online without a prescription. In the US, the FDA decides which ingredients count and at what strength. This guide covers that short list, how to read the label, which one fits your acne, and how long to give it. It is one part of the wider guide on how to get rid of acne.

What counts as an acne medicine

The FDA says a product's intended use decides whether it is a cosmetic or a drug. A product sold to treat acne is a drug. The FDA has a rule for acne medicines, called a monograph. It lists which active ingredients may be used, the strength of each, and what the label must say.

Every over-the-counter drug must carry a Drug Facts box. That box lists the active ingredient, meaning the part that treats acne, and its strength as a percentage. If a product has no Drug Facts box and no active ingredient, it is sold as a cosmetic.

The ingredients you can buy

Active ingredient	Strength the FDA allows	How the AAD describes it
Benzoyl peroxide	2.5 to 10 percent	Reduces acne-causing bacteria. Best started at 2.5 percent
Salicylic acid	0.5 to 2 percent	Unclogs pores and exfoliates. Works best on whiteheads and blackheads
Sulfur	3 to 10 percent alone, or 3 to 8 percent with resorcinol	Sold under the same rule. The FDA label says to apply it only to areas with acne
Adapalene	0.1 percent gel (its own FDA approval)	A retinoid. Helps clear blackheads, whiteheads and pimples

MedlinePlus, the US National Library of Medicine's health site, lists the same group: benzoyl peroxide, sulfur, resorcinol, adapalene and salicylic acid. It says these products work by killing bacteria, drying up skin oils, or making the top layer of skin peel.

Adapalene is sold under a different rule from the other three. The FDA approved the 0.1 percent gel for sale without a prescription in 2016, for people aged 12 and older. Differin gel and adapalene strengths covers the forms you will see.

Which one to pick first

The 2024 acne guideline from the American Academy of Dermatology (AAD) gives benzoyl peroxide and topical retinoids, such as adapalene, its strongest rating. Salicylic acid gets a conditional rating, one step lower. That matches the advice AAD dermatologists give adults treating mild acne at home: find one product with an active ingredient that fits the acne you have.

• Mostly blackheads and whiteheads: adapalene, or salicylic acid.
• Mostly red pimples: benzoyl peroxide at 2.5 percent.
• Some of both: start with one, and add the second later if needed.

Salicylic acid vs benzoyl peroxide goes deeper on the first choice. The AAD's advice is to use that one product for 6 to 8 weeks, without adding another product and without stopping the first.

Skinli's plan uses two of these ingredients, adapalene 0.1 percent and benzoyl peroxide 2.5 percent, in a slow start: every other night for the first two weeks, then every night.

Washes, gels and creams

The AAD says benzoyl peroxide comes in many forms, from cleansing bars and washes to gels and creams, and that salicylic acid comes in cleansers and moisturizers too. The FDA rule allows products that stay on the skin and products that are applied and then removed, such as soaps and masks.

Two points help when you compare forms. First, the strength on the label applies to every form, so a 2.5 percent wash and a 2.5 percent gel contain the same share of active ingredient. Second, the AAD says the way you apply a leave-on product matters: a thin layer over the whole area that breaks out, and not dots on each spot. Applying medicine to all acne-prone skin treats the acne you have and helps prevent the next breakout.

How to use it: what every label says

The FDA requires the same directions on every monograph acne product:

1. Clean the skin well before you apply it.
2. Cover the entire affected area with a thin layer, one to three times a day.
3. Start with one application a day, because the skin can dry out. Increase to two or three times a day only if needed, or as a doctor directs.
4. If dryness or peeling bothers you, cut back to once a day or every other day.

Some labels also offer a sensitivity test for a new user: apply a small amount to one or two small areas for the first 3 days, and use it as directed if there is no discomfort. How to patch test a new skincare product walks through that test.

The adapalene label is stricter. It says to use it once a day, and that using more will not give faster or better results but may make irritation worse. It also says adapalene is not a spot treatment for a single pimple. How to start adapalene without irritation covers the first weeks.

Warnings on the label

The FDA sets these warnings, so you will see them on every product with that ingredient.

• Every acne product: irritation and dryness are more likely if you use another acne medicine on the skin at the same time. If irritation happens, use only one at a time.
• Benzoyl peroxide: the label says not to use it on highly sensitive skin, or if you are sensitive to benzoyl peroxide. Avoid unnecessary sun and use sunscreen. Keep it away from the eyes, lips and mouth. It can bleach hair and dyed fabric. Stop and ask a doctor if irritation becomes severe.
• Sulfur: do not use it on broken skin or on large areas of skin. Apply it only to areas with acne.
• Adapalene: limit sun, including tanning beds, and use sunscreen outdoors. Ask a doctor before use if you are pregnant or breastfeeding.

Because benzoyl peroxide bleaches fabric, use a white towel and pillowcase while it is in your routine.

The products around the treatment

The acne medicine is one product in a routine. The cleanser, moisturizer, sunscreen and makeup around it can undo its work if they clog pores. The AAD's adult acne page asks you to read the labels on your skin and hair products and to look for one of these terms on every container: non-comedogenic, non-acnegenic, oil-free, or won't clog pores. NIAMS, a part of the US National Institutes of Health, explains that noncomedogenic means the product does not clog pores. NICE gives the same advice in its own words: avoid oil-based and comedogenic moisturizers, sunscreens and makeup, and remove makeup at the end of the day.

A moisturizer matters more than it looks. The AAD says acne treatments tend to dry and irritate the skin, and that a daily moisturizer can help skin tolerate them. A plain moisturizer belongs in any over-the-counter plan. The complete acne skincare routine puts each product in order, morning and night.

Storing and replacing benzoyl peroxide

In March 2025 the FDA tested 95 acne products that contain benzoyl peroxide for benzene, a chemical that can cause cancer. The AAD explains that benzoyl peroxide can break down into benzene, especially when a product is exposed to high heat or kept for a long time. Its advice:

• Store benzoyl peroxide products as the package says, which in general means room temperature or cooler.
• Replace them every 10 to 12 weeks.
• Throw out any product that has been exposed to temperatures above 78°F, such as in a hot car.

How long to give it

An over-the-counter treatment needs weeks. The AAD says it takes 6 to 8 weeks to see some improvement and 3 to 4 months for complete clearing. The NHS says benzoyl peroxide usually starts to work within 4 weeks, and to see a pharmacist or doctor if acne gets worse or does not improve after 12 weeks. The adapalene label says results can take up to 3 months of once-daily use. How long an acne routine takes to work sets out what to look for along the way.

When a store product is the wrong choice

The AAD says store products are unlikely to treat large, painful pimples that sit deep in the skin or acne that leaves a scar, and that these need a dermatologist. It also advises anyone who is pregnant or trying to get pregnant to talk to a dermatologist before treating acne on their own, because some non-prescription acne treatments are not safe during pregnancy. If one over-the-counter product has not helped after a full course, and a second one working on a different cause has not helped either, that is the point to see a doctor. The best acne treatments by guideline shows what a doctor can add.