When someone cuts themselves, your first move is to apply firm, direct pressure to the wound with a clean cloth or bandage and keep it there for at least 10 to 15 minutes without peeking. Most cuts will stop bleeding within that window. While you hold pressure, you can assess how serious the cut is and decide whether it needs professional care or can be treated at home.
Stop the Bleeding First
Grab whatever clean material is nearby: a towel, gauze pad, washcloth, or even a clean shirt. Press it firmly against the wound and hold it there. This is the single most important step, and it works for the vast majority of cuts. Don’t lift the cloth to check every few seconds, because that disrupts clots forming at the wound surface.
If blood soaks through the first pad, don’t remove it. Place another pad on top and keep pressing. Removing a soaked pad pulls away the early clots your body is building. If possible, elevate the injured area above the level of the heart, which slows blood flow to the wound.
For a cut on an arm or leg that won’t stop bleeding with direct pressure alone, you can also press on the major artery upstream from the wound (the inside of the upper arm or the crease of the groin). Once bleeding stops, don’t hold pressure on that artery for more than five minutes.
Recognize the Type of Bleeding
Not all bleeding looks the same, and the appearance tells you how urgent the situation is. Capillary bleeding, the kind you see from a paper cut or shallow scrape, oozes slowly and usually stops on its own. Venous bleeding flows steadily and the blood is dark red. It needs firm pressure but is generally manageable. Arterial bleeding is the most serious: the blood is bright red and spurts out in pulses that match the heartbeat. Arterial bleeding is a medical emergency and requires immediate help from paramedics.
When a Cut Needs Stitches
Some cuts look dramatic but heal fine on their own. Others look manageable but actually need professional closure. A cut likely needs stitches or medical attention if it meets any of these criteria:
- Depth: The wound is deeper than about a quarter inch (6 mm), or you can see fat, muscle, or bone inside it.
- Gaping edges: The sides of the wound don’t come together on their own or pull apart easily.
- Location over a joint: A deep cut over a knuckle, knee, or elbow that opens wider when the joint moves often needs stitches to heal properly.
- Facial cuts: Even relatively minor cuts on the face are often treated professionally to minimize scarring.
- Jagged or uneven edges: Irregular wound edges don’t align well on their own and heal with more scarring without closure.
If you’re unsure, lean toward getting it checked. Stitches work best when placed within the first several hours after an injury. Waiting too long can mean the wound can no longer be closed.
Clean the Wound Properly
Once bleeding is under control, clean the cut with plain tap water and mild soap. Run water over and around the wound to flush out any dirt or debris. You can gently use soap around the cut, but try to keep soap out of the wound itself since it can irritate the tissue.
Skip the hydrogen peroxide and rubbing alcohol. Both are outdated recommendations. Hydrogen peroxide irritates skin cells and can actually slow healing rather than help it. Plain water does the job without the tissue damage.
Cover and Protect the Cut
After cleaning, pat the area dry with a clean cloth. For most household cuts, a simple adhesive bandage or a non-stick gauze pad held in place with medical tape is all you need. The goal is to keep the wound moist and protected from dirt and bacteria.
You don’t necessarily need antibiotic ointment. Research comparing antibiotic ointments to plain petroleum jelly (like Vaseline) found no difference in healing outcomes for redness, swelling, scabbing, or skin regrowth. The petroleum jelly group actually had fewer reactions, while the antibiotic group produced a case of allergic contact dermatitis. A thin layer of petroleum jelly under the bandage keeps the wound moist and is a perfectly effective option.
For slightly larger cuts where the edges are close together but keep separating, butterfly bandages (adhesive strips) can hold the skin edges in alignment while the wound heals. Apply them perpendicular to the cut, pulling the edges gently together.
Change the dressing once a day or whenever it gets wet or dirty. Each time, rinse the wound gently, reapply petroleum jelly or ointment, and put on a fresh bandage.
Think About Tetanus
Any cut that breaks the skin can potentially introduce tetanus bacteria, especially if the wound involved a dirty or rusty object, soil, or animal contact. The CDC recommends a tetanus booster for dirty or deep wounds if it’s been five or more years since your last tetanus shot. For clean, minor cuts, the threshold is 10 years. If you’re not sure when the person last had a tetanus vaccine, or they never completed the full childhood series, they should get one.
Watch for Signs of Infection
Some redness and swelling around a fresh cut is completely normal, especially in the first two days. Pain and swelling typically peak around day two, and any redness from normal healing should fade by day four. A cut that’s healing well should be fully closed within about 10 days.
Infection looks different from normal healing. Watch for these warning signs in the days after the injury:
- Pus or cloudy fluid draining from the wound
- Spreading redness that extends outward from the wound edges rather than shrinking
- A red streak running from the wound toward the center of the body
- Increasing pain after the first 48 hours, rather than gradually improving
- Increasing swelling after the second day
- Fever
- A yellow crust or pimple forming on the wound
- Swollen, tender lymph nodes near the wound (for example, swollen glands in the armpit for a hand wound)
A red streak moving away from the wound or a fever both signal that the infection may be spreading and needs prompt medical attention.
Call 911 for These Situations
Most cuts can be handled at home or with an urgent care visit, but some require emergency help. Call 911 or get to an emergency room if the person has bright red blood spurting from the wound, bleeding that won’t stop after 15 to 20 minutes of firm direct pressure, or a deep wound to the chest, abdomen, or neck.
Also watch for signs of shock from blood loss: confusion, pale or clammy skin, dizziness, rapid heartbeat, shortness of breath, or weakness. These symptoms mean the body is losing too much blood and the person needs emergency care immediately. Keep them lying down with their legs elevated if possible, maintain pressure on the wound, and stay with them until help arrives.