For most minor cuts and scrapes, plain petroleum jelly (Vaseline) works just as well as Neosporin for healing, and it’s actually the option dermatologists recommend. The American Academy of Dermatology’s wound care guidelines specifically advise applying petroleum jelly to keep wounds moist and explicitly state: do not apply topical antibiotics, as they can irritate your skin even more.
That guidance surprises a lot of people. Neosporin has been a medicine cabinet staple for decades, and reaching for it after a cut feels like the responsible thing to do. But the science tells a different story.
Why Petroleum Jelly Works So Well
The key to healing a wound quickly isn’t killing bacteria on the skin’s surface. It’s keeping the wound moist. When a cut dries out and forms a scab, new skin cells have to work harder to migrate across the wound bed, slowing down the entire repair process. Petroleum jelly creates a seal that locks in moisture and lets those cells do their job efficiently.
Clinical studies have repeatedly confirmed that moist wound conditions can accelerate healing by up to 50% compared to letting a wound air-dry. That speed boost comes from faster wound contraction and quicker regrowth of the outer skin layer. Petroleum jelly also prevents scars from becoming too large, deep, or itchy, according to the American Academy of Dermatology, because it stops the thick, uneven scab formation that can distort healing tissue.
The important thing is consistency. You should apply petroleum jelly continuously until the wound fully closes, not just once or twice in the first day. Keep the wound covered with a clean bandage and reapply after cleaning.
The Problem With Neosporin
Neosporin contains three antibiotics, including neomycin, which is a well-known cause of allergic skin reactions. In a study of over 1,100 patients tested for skin allergies, 6% had positive reactions to neomycin. That’s a meaningful number. The reaction typically shows up as red, itchy, inflamed skin around the wound, which people often mistake for infection. So the very product meant to help healing can make things look and feel worse.
Neomycin is so commonly problematic that it was named the American Contact Dermatitis Society’s “Allergen of the Year” in 2010. If you’ve ever applied Neosporin to a cut and noticed the surrounding skin getting red and irritated a day or two later, there’s a good chance you were reacting to the product itself rather than developing an infection.
Antibiotic Resistance Is a Real Concern
Beyond allergic reactions, routine use of topical antibiotics on minor wounds contributes to a larger public health problem. Excessive use of topical antibiotics is a key driver of antimicrobial resistance and is directly responsible for increasing resistance in Staphylococcus aureus, the bacterium most commonly involved in skin infections.
This isn’t a theoretical risk. When one country made a topical antibiotic available over the counter for general use, resistance rates in staph bacteria climbed to 28%. After the product was restricted to prescription-only, resistance dropped back to 11% over the following years. The pattern is clear: widespread casual use of antibiotics on minor wounds breeds resistant bacteria.
What makes this especially concerning is that resistance to topical antibiotics doesn’t stay contained. Bacteria that develop resistance to one antibiotic often become resistant to others simultaneously, including oral and intravenous antibiotics used for serious infections of bones, joints, and deeper tissues. Every time you dab Neosporin on a paper cut, you’re applying selective pressure on your skin’s bacterial population for very little benefit.
When You Actually Need an Antibiotic
Petroleum jelly is the right choice for clean, minor wounds: small cuts, scrapes, shallow burns, and skin tears. These wounds don’t need antibiotics because your immune system handles the small number of bacteria that enter a clean, properly washed wound without any help.
You should watch for signs that a wound has become genuinely infected, which is a different situation entirely. The signals are:
- Increasing pain that gets worse after the first day rather than improving
- Pus or cloudy drainage from the wound
- Spreading redness around the wound, especially if it’s expanding or warm to the touch
- Fever, which suggests the infection may be moving beyond the skin
If you notice a growing area of redness or swelling without a fever, that warrants a visit to a healthcare provider within 24 hours. If you develop a fever along with a rapidly changing rash or significant swelling, seek emergency care. In either case, a true skin infection usually requires prescription-strength treatment, not an over-the-counter ointment. Neosporin isn’t strong enough to treat an established infection anyway.
The Bottom Line on Wound Care
For the everyday cuts and scrapes that make up the vast majority of home wound care, the best approach is simple: wash the wound with clean water, apply petroleum jelly, cover it with a bandage, and repeat daily until it heals. Once the wound has closed, applying sunscreen to the area can help the scar fade faster by reducing discoloration.
Petroleum jelly costs a fraction of what Neosporin does, carries no risk of allergic reactions or antibiotic resistance, and performs equally well at promoting healing. The antibiotic ointment in your medicine cabinet isn’t doing anything that a $4 jar of Vaseline can’t do, and it comes with downsides that petroleum jelly simply doesn’t have.