Can I put Neosporin on my face?

Better not to. Neomycin, one of Neosporin's three antibiotics, is one of the most common contact allergens in patch testing - around 8.7% of tested patients react - and the allergic rash looks so much like a spreading infection that people respond by applying more. For a clean minor scrape, plain petrolatum keeps the wound moist without the allergen.

Why do dermatologists recommend against Neosporin?

Because of allergic contact dermatitis. Neomycin, one of Neosporin's three antibiotics, was named the American Contact Dermatitis Society's Contact Allergen of the Year for 2010, and North American Contact Dermatitis Group data for 2009-2010 put it second among all tested allergens at 8.7% prevalence. Bacitracin, the second antibiotic in the same tube, is a well-documented co-reactor. For a clean minor wound there is usually no benefit that outweighs that risk.

What does a Neosporin allergic reaction look like?

Redness, itching, scaling and swelling that spread outward from where the ointment was applied, often appearing a day or more after use rather than immediately. The problem is that this looks very much like an infection getting worse, so the common reaction is to apply more ointment, which makes it worse again. If a wound gets angrier the longer you treat it, the treatment is a reasonable suspect.

What should I use on a minor cut or scrape instead?

For a clean minor wound, dermatologists commonly recommend washing it with soap and water and applying plain petrolatum under a bandage. Petrolatum keeps the wound moist, which is what actually helps it heal, and contains no antibiotic to react to. A wound that is genuinely infected needs a doctor, not a drugstore ointment.

Is Neosporin the same as Vaseline or Aquaphor?

No. Vaseline is 100% petrolatum with no active ingredients. Aquaphor is a petrolatum-based ointment with several additions including lanolin alcohol, itself a recognised contact allergen, though a much less common one. Neosporin is a petrolatum base carrying three antibiotics: neomycin, bacitracin and polymyxin B. The antibiotics are the part that causes the allergy problem.

Don't Put Neosporin on Your Face: It's a Top-5 Contact Allergen

Researched, not tested. We have not personally used this product or protocol. This page answers the question from published sources, every one of which is linked. Our first-hand testing lives in reviews.

Evidence: strong Strong evidence — consistent published data from named sources.

This one surprises people, because Neosporin has been the default thing in the bathroom cabinet for decades. But the reason dermatologists keep steering patients away from it has nothing to do with whether it kills bacteria. It's about who reacts to it, and how badly that reaction gets misread.

The short version

Neosporin is a petrolatum base carrying three antibiotics: neomycin, bacitracin and polymyxin B. The petrolatum is fine. The antibiotics are the problem, and neomycin is the worst of them.

Neomycin was named the American Contact Dermatitis Society’s Contact Allergen of the Year for 2010. In North American Contact Dermatitis Group patch-test data for 2009–2010 it came in second among all allergens tested, at 8.7% prevalence, and patch-test positivity has run roughly 7.2%–13.1% across the last twenty years. It is the topical antibiotic most likely to cause contact allergy, and co-reactivity with bacitracin and polymyxin is well documented — which matters here, because all three are in the same tube.

That is a high number for something people spread on their face without a second thought.

The trap that makes it worse

Allergic contact dermatitis from neomycin shows up as redness, itching, scaling and swelling spreading out from where the ointment went. It is usually delayed — appearing a day or more after application, not immediately.

Which means it looks exactly like an infection that is getting worse.

So the intuitive response is to apply more ointment. That adds more allergen, the rash spreads further, and the whole thing reads as confirmation that the infection is winning. People can run this loop for a week before anyone suggests the tube is the cause.

The rule worth remembering: if a wound gets angrier the longer you treat it, the treatment is a suspect. Stop, and see whether it settles.

What to do instead for a clean minor wound

For an ordinary scrape, shaving nick, or picked spot that isn’t actually infected, dermatologists routinely recommend the same thing:

Wash it with soap and water.
Apply plain petrolatum — the unscented, single-ingredient kind.
Cover it if it’s somewhere that will get knocked or dirty.

What helps a minor wound heal is keeping it moist and covered. That is the part petrolatum does, and it is the part Neosporin’s petrolatum base was doing all along. The antibiotics are along for the ride on a wound that was never infected, and they carry the allergy risk.

Plain petrolatum is also unusually well behaved for a sensitive-skin product: one ingredient, no fragrance, nothing to react to. If you reach for Aquaphor instead, note that it isn’t the same thing — it contains lanolin alcohol, which is also a recognised contact allergen, though a far less common one than neomycin. If a healing ointment seems to be making a spot angrier, plain petrolatum is the honest control experiment.

When you actually need a doctor

None of the above applies to a wound that is genuinely infected — spreading warmth and redness, pus, increasing pain, fever, or a red streak tracking away from the site. That needs medical attention and probably an oral antibiotic, not anything sold next to the bandages. The same goes for anything on the face near the eye, any bite from an animal, and any wound that isn’t closing.

And it is worth saying plainly: if you have already been using Neosporin on your face and the area is inflamed, the useful next step is to stop applying it and get it looked at, rather than switching to another antibiotic ointment.

Why we’re not writing the how-to

The query this page answers is usually asked with a plan already in mind — Neosporin on a pimple, on a cyst, overnight under a bandage. We’ve deliberately not written that page. The honest answer to the question is that the ointment carries a well-quantified allergy risk on the body’s most visible skin, in exchange for antibacterial action a clean minor wound doesn’t need. Acne in particular is not a bacterial infection you can treat this way, and using a triple-antibiotic ointment on it is how you find out you’re part of the 8.7%.

Sources

Researched, not tested. We have not used Neosporin on our own face and this is not a review of it. This page is general information, not medical advice — for a wound you’re worried about, see a doctor.