Benzoyl Peroxide is a Derm-Favourite for Acne: Here’s How to Get the Best out of it

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I know what you’re thinking. As much as you love the beauty industry and all the pretty, gorgeousness that comes with it, you have countless buzz words and unpronounceable ingredient names thrown at you on the regular. Am I right? I get it, it’s exhausting.

Well, (*whispers*) sorry to be a pain, but I’m about to throw another one at you: Benzoyl Peroxide. But don’t worry! Dermatologists love it so much for acne-prone skin that those who suffer from breakouts are going to really want to know about it. And I promise, it’s not just a fad. This one’s been around for years and, even better, it really works.

With expert advice from dermatologists Dr Hannah Kopelman, Dr Paul Farrant and Medical Director of EUDELO Dermatology & Skin Wellbeing, Dr Stefanie Williams, keep scrolling to find out why benzoyl peroxide is at the top of the derms’ list of must-tries for breakouts, learn how to use it on your skin properly and discover which other skincare powerhouses you can pair it with to reap all of its benefits.

What is benzoyl peroxide?

“Benzoyl peroxide is one of my favourite treatments for acne,” says Dr Kopelman. “It’s an antibacterial ingredient that directly targets the bacteria driving breakouts, while also unclogging pores and reducing inflammation. You’ll find it in washes, creams, gels, and spot treatments, which makes it very versatile.”

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“[This] antimicrobial agent works by releasing oxygen when applied to the skin, creating an environment hostile to P. acnes bacteria – the primary bacterial culprit in acne breakouts,” adds Dr Williams.

What are the benefits of using it?

Warning: This ingredient can bleach hair and fabric, so it’s best to keep it away from towels and bedding for example. However, the benefits for avoiding acne are worth the risk. “For many people, benzoyl peroxide also helps prevent new breakouts from forming, not just clear existing ones,” explains Dr Farrant.

How’s that? “Benzoyl peroxide provides effective non-antibiotic, antibacterial action against acne-causing bacteria while also having exfoliative and comedolytic properties – meaning it helps remove dead skin cells from the surface and prevent pore blockages,” explains Dr Williams.

“It’s particularly effective for inflammatory acne lesions (papules and pustules, i.e. painful, red bumps) and can reduce both active breakouts and prevent new ones from forming. Unlike some other acne treatments, bacteria don’t develop resistance to benzoyl peroxide (because it’s not an antibiotic agent), making it a reliable long-term treatment option.”

And if you’re worried about it bleaching your skin, Dr Williams puts your mind at rest. “It’s a myth that benzoyl peroxide ‘bleaches’ / causes permanent pigment loss in darker skin tones (if used correctly),” she explains. “The ingredient is an oxidizing agent, but its potential ‘bleaching’ affects contact fabrics, rather than human skin.”

Who should be using it?

According to Dr Farrant, anyone who experiences mild to moderate acne. “Whether that’s teenagers suffering, or adults getting persistent breakouts,” he says. And, “it is especially effective if your spots are inflamed, red or painful.”

You should proceed with caution though if your skin is sensitive. “Those with very sensitive skin, eczema, or conditions like rosacea should be cautious, as it can cause irritation and dryness,” he warns. “Pregnant or breastfeeding women should check with their doctor before starting it, as with any medical-grade skincare.” Dr Williams adds, “always patch test first on a small skin area.”

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How often can you use it?

“Start slowly with twice per week application, preferably in the evening, then gradually increase to daily if tolerated,” recommends Dr Williams. “Always start with lower concentrations such as 2.5%, or rinse-off formulations. The key is building tolerance gradually rather than aggressive daily use from the start.”

“It’s important to understand that overuse won’t speed up results – in fact, it’s more likely to cause redness and peeling, which can make breakouts harder to manage,” adds Dr Farrant.

Should you use it morning, night, or both?

“You can use it either in the morning or at night, though many people prefer nighttime use to avoid dryness showing during the day,” Dr Kopelman says. “If your skin tolerates it well and your acne is more severe, it may be used morning and night but always introduce it gradually and pair it with a good moisturiser suitable for acne-prone skin,” adds Dr Farrant.

If using it in the morning, don’t forget to protect your skin afterwards. “Ideally combine with a broad-spectrum SPF 30-50,” advises Dr Williams.

How long does it take to work?

Little signs are quicker to spot than with other ingredients. “Early improvements may appear within two to four weeks, but the best results usually come after two to three months of consistent use,” says Dr Kopelman.

“Some people notice fewer breakouts earlier, while for others, it may take longer,” adds Dr Farrant. “As with all skincare, consistency is key, as stopping too soon often leads to flare-ups returning.”

Dr Williams advises managing your expectations. “Some patients notice reduced inflammation within the first week, but full acne clearance takes patience and consistency,” she says. “Don’t expect overnight results – this is a long-term treatment strategy.”

The ingredients you can layer with it – and the ones you should definitely avoid

“Benzoyl peroxide layers well with topical antibiotics or adapalene but I caution against combining it with retinoids or strong exfoliants unless under guidance, since that combination can be too irritating,” warns Dr Kopelman.

However, “if you do want to use these alongside benzoyl peroxide, you can alternate application,” adds Dr Farrant. “For example, using it on alternate days or using benzoyl peroxide in the morning and a retinoid at night or specially formulated combinations that have both ingredients in one gel.” Take advice from your GP or dermatologist if you’re unsure though.

Dr Farrant says that gentle moisturisers and non-comedogenic sunscreens work well with benzoyl peroxide too, which “help to protect and calm the skin while the treatment does its job,” he says. Dr Williams agrees. “Safe companions include gentle, but lightweight moisturisers (look for something oil and silicone free) and a lightweight broad-spectrum sunscreen.”

The takeaway

Don’t just take our word for it, Dr Kopelman even says benzoyl peroxide is one of her favourite ingredients for acne prone skin.

It works to not only clear up breakouts but prevent them from happening in the first place too. You might even say it’s a no brainer for anyone tearing their hair out when it comes to acne, except for those with sensitive skin or who are pregnant and breast feeding.

Use it wisely – avoid pairing it with harsh AHAs and retinoids or at least alternate application – and use it gradually and consistently for the best results.