A lot of long-standing first-aid advice for cuts and scrapes was wrong. Hydrogen peroxide and iodine, the two staples of every parent's first aid box, kill the cells the wound needs to heal. The "let it dry out and form a scab" rule has been replaced by "keep it slightly moist". Antibacterial ointment isn't necessary on a clean superficial wound and contributes to skin sensitisation.
The current evidence is short and easy: clean with running water, cover with petroleum jelly (Vaseline), and a plaster. That's it for most things.
Healthbooq provides clear guidance on managing these common injuries at home while recognizing when professional medical attention is necessary.
The basic four-step
1. Stop the bleeding. Firm direct pressure with a clean cloth, gauze, or muslin — not a tissue that will shred. Five to ten minutes uninterrupted. Don't keep peeking; that pulls clotting fibres apart. Raise the bleeding limb above the heart if possible.
If blood soaks through, add another cloth on top — don't remove the first. If pressure for 10 minutes doesn't stop bleeding from a small cut, it needs medical attention.
2. Clean it. Cool running tap water for a minute or two. Tap water is fine — comparable trial outcomes to sterile saline for everyday wounds. Use mild soap on intact skin around the wound, not in the wound itself.
For grit, gravel, or dirt embedded in the wound, gently rub out with a clean wet cloth or rinse harder. If anything won't come out — small black specks of grit, glass, gravel — get it seen. Embedded foreign material under healed skin causes infection or "tattoo" scarring.
Don't use hydrogen peroxide, iodine (Betadine), surgical alcohol, or TCP. They damage the cells the wound needs to repair itself. Mild soap and water is better.
3. Cover it. A thin smear of plain petroleum jelly (Vaseline) keeps the wound moist, which is what actually accelerates healing — a moist wound bed re-epithelialises about twice as fast as a dry one. Cover with an appropriately sized plaster or non-adherent dressing.
Antibacterial ointment (Neosporin, Polysporin, Savlon antiseptic cream) is unnecessary on a clean wound and the neomycin in some products causes contact dermatitis in around 10% of users. Plain petroleum jelly does the moisture-retention job that actually helps. UK NHS guidance now reflects this.
Skip the bandage for tiny shallow scrapes that won't be in dirt, water, or picked at — open air healing is fine for those. Use a plaster if location, exposure, or temptation to pick is the issue.
4. Watch it. Change the dressing once a day or whenever it gets wet/dirty. The wound should look better day by day.
When to seek medical attention
Same-day GP, NHS 111, or urgent treatment centre for:
- Bleeding that won't stop with 10 minutes of firm pressure
- A cut that gapes open when relaxed (pull the edges gently together with your finger — if the wound stays open after you let go, it likely needs glue or stitches)
- Anything longer than ~5 mm and visibly deep — fat, muscle, bone, or tendon visible
- Wounds over a joint (knuckle, elbow, knee) — these don't heal well stretched
- Wounds on the face, especially around the eyes, lip border, or eyebrow line — better cosmetic outcome with proper closure
- Embedded debris you can't get out (glass, grit, splinters under skin)
- Animal or human bites — high infection risk, often need antibiotics
- Puncture wounds from dirty objects — nails, screws, garden tools — even if small
- A&E directly: spurting bleeding (arterial), a wound to the neck, groin, or armpit, or a wound where you suspect deeper damage (numbness or weakness past the wound)
Glue vs stitches vs Steri-Strips
For cuts that need closure, modern paediatric A&E generally prefers tissue glue (Dermabond / similar) for facial and short clean cuts, because it stings less and the cosmetic outcome is comparable. Steri-Strips are an option for cleanly-edged shallow cuts not over a joint. Stitches are still used for deep, ragged, or high-tension wounds. Whichever the clinician picks, the parent's job afterwards is keep it clean, keep it dry initially, then watch for infection.
How to spot a wound that's getting infected
Most clean wounds settle in 24–48 hours and improve from there. Concerning signs:
- Increasing pain after day 2, rather than decreasing
- Redness spreading outward from the wound, especially in a spreading or streaking pattern up the limb
- Increasing warmth around the wound
- Yellow or green pus (a small amount of clear or pinkish fluid is normal in the first day or so)
- Swelling that's getting worse
- Fever
- A wound that's not closing after a week, or is getting bigger
Any of these → GP or NHS 111 same-day. Red streaks tracking up the limb from a wound = A&E — that's possibly cellulitis or lymphangitis spreading.
Tetanus
UK children get tetanus protection in the routine schedule (8, 12, 16 weeks; 3 years 4 months pre-school booster; 14 years booster). A child who's up to date on their schedule is protected, full stop, for any normal cut. They don't need an extra booster after a graze or even a small puncture wound, as long as the wound is reasonably clean.
If the wound is high-risk for tetanus — deep, dirty, contaminated with soil, manure, or rust, or a deep animal bite — and the child's schedule is incomplete, contact NHS 111 or your GP. The same applies if you're not sure of their immunisation status.
In the US the schedule is slightly different (DTaP at 2, 4, 6, 15–18 months and 4–6 years; Tdap at 11–12). Same principle: a child up to date is covered.
Special situations
Mouth and tongue lacerations. Children bite their tongue, lip, or inside of the cheek constantly. Even quite gory-looking wounds inside the mouth heal remarkably well without intervention because of the rich blood supply and saliva. Rinse with cool water, give an ice lolly to numb and reduce swelling, paracetamol for pain. See a doctor only if the cut goes through the lip border (the vermilion border — needs proper alignment), is gaping, or won't stop bleeding after 10 minutes.
Knocked-out teeth. Different first aid (see When to take a child to A&E after a fall). Permanent teeth: rinse gently in saline or milk, replant if possible, otherwise transport in milk; dental care within an hour. Baby teeth: don't replant, get a dental check.
Splinters. Small ones often work out by themselves over a few days. For removal: tweezers, in line with how it went in, after a brief soak in warm water if it's stubborn. For deep splinters with no end visible, GP. Glass and metal splinters lower threshold for medical removal.
Paper cuts and very small fingertip cuts. Often disproportionate pain because of nerve density. Cool water, plaster, paracetamol, distraction. They heal fine.
What's actually in a useful wound-care kit
- Sterile gauze and saline pods for irrigation (better than running tap water if you're outdoors)
- A roll of micropore tape
- Plain plasters, assorted, including waterproof
- Plain petroleum jelly (small tube)
- Tweezers (for splinters)
- Steri-Strips (skin closure strips) — useful for clean, small, low-tension cuts you'd otherwise glue
- Disposable gloves
- A list of NHS 111 / GP / A&E numbers
You don't need: antibacterial cream (no benefit on a clean wound), hydrogen peroxide (damaging), iodine for minor wounds (also damaging), butterfly closures branded for kids at five times the price (Steri-Strips are the same thing).
Reducing scarring
Most children scar little, especially after age 4–5. What helps:
- Moist wound bed during healing (petroleum jelly under the dressing)
- Don't pick at scabs
- Sunscreen on the healing scar for 6–12 months — UV darkens new scar tissue significantly
- Time — most scars fade and flatten over 12–24 months
Silicone gel sheets and bio-oil have modest evidence and don't hurt. Topical vitamin E doesn't beat petroleum jelly in trials. For a hypertrophic or keloid scar that's getting worse rather than better, see your GP.
Key Takeaways
Most cuts in young children stop bleeding with 5–10 minutes of firm pressure, clean fine under running tap water, and heal best with a thin smear of plain petroleum jelly and a plaster. Skip antiseptic creams, hydrogen peroxide, and iodine — they slow healing. Get a wound seen the same day if it gapes open, won't stop bleeding, is over a joint or near the eye, is on the face and likely to scar, has dirt embedded, or is from an animal bite. Tetanus cover from the routine UK schedule lasts well into childhood — boost only if a high-risk wound and the schedule is incomplete.
