Run cool water over the burn immediately. This is the single most important thing you can do after a burn, and it works best when you start within seconds. Keep the water running for at least 20 minutes. That duration matters: nearly half the patients in clinical cooling studies were treated for 20 minutes or longer, and the International Liaison Committee on Resuscitation strongly recommends immediate active cooling with running water for all thermal burns.
The First 20 Minutes
Use cool running water from a tap, not ice water. Ice or very cold water can damage already-injured tissue and constrict blood flow to the area when it needs circulation the most. Hold the burned skin under the stream or, if that’s not practical, soak a clean cloth in cool water and hold it against the burn, re-wetting it frequently so it doesn’t warm up and trap heat.
While you’re cooling the burn, remove any jewelry, watches, or tight clothing near the burned area before swelling starts. If clothing is stuck to the skin, leave it in place and cool over it. Don’t try to pull fabric away from a burn.
What Not to Put on a Burn
Butter, toothpaste, cooking oil, and egg whites are all common home remedies that make burns worse. They trap heat against the skin, cause irritation, and can introduce bacteria into the wound. Ice is equally harmful. Stick with cool running water and nothing else during the initial cooling phase.
How to Tell If Your Burn Needs Emergency Care
Most kitchen and household burns are small and superficial. They turn red, hurt, and heal on their own within a week or two. But some burns need professional treatment right away. Head to an emergency department if you see any of the following:
- White, brown, or leathery skin: A burn that looks waxy, doesn’t hurt much, or feels numb has likely destroyed deeper layers of tissue. This is a third-degree burn.
- Burns on the face, hands, feet, genitals, or over a joint: These locations carry higher risks of complications and scarring, and the American Burn Association lists them as criteria for burn unit referral regardless of size.
- Large blistering burns: Blisters mean the burn has reached the second layer of skin. Small blisters on a limited area can often be managed at home, but widespread blistering across a large area needs medical attention.
- Chemical or electrical burns: Both types can cause internal damage that isn’t visible on the surface. Electrical burns in particular can injure muscle and tissue along the current’s path through the body.
- Burns in children under 10 or adults over 50: These age groups meet referral criteria at smaller burn sizes because their skin is thinner and healing is slower.
Burns from inhaling hot air, steam, or smoke also require emergency evaluation, even if the skin looks fine. Swelling in the airway can develop gradually and become dangerous.
Chemical Burns Need Longer Rinsing
If a chemical caused the burn, flush the area with cool running water for at least 20 minutes. For chemical burns to the eye, tilt your head to the side so the water runs away from the unaffected eye, and rinse gently for a full 20 minutes. Remove any contaminated clothing while rinsing, and avoid trying to neutralize the chemical with another substance. Water alone is the safest approach.
Caring for a Minor Burn at Home
Once you’ve cooled a minor burn for 20 minutes, pat the area dry gently and apply a thin layer of petroleum jelly or aloe vera gel. Cover it loosely with a non-stick gauze bandage to protect it from friction and bacteria. Change the dressing once a day, or whenever it gets wet or dirty.
Don’t pop blisters. They act as a natural sterile barrier over the damaged skin beneath. If a blister breaks on its own, clean the area gently with water, apply petroleum jelly, and cover it with a fresh bandage.
For pain, over-the-counter options work well. Ibuprofen (400 mg every 8 hours) reduces both pain and inflammation. Acetaminophen (1,000 mg every 6 hours, no more than 4,000 mg in 24 hours) is an alternative if you can’t take ibuprofen. Naproxen, taken every 12 hours, is another option that lasts longer between doses.
Healing Timeline for Minor Burns
A first-degree burn (red, painful, no blisters) typically heals within a week without scarring. A superficial second-degree burn with blisters takes about two weeks to heal. Deeper second-degree burns can take longer and may leave scars, especially without proper wound care.
Watch for signs of infection as the burn heals: increasing redness spreading outward from the wound, swelling that gets worse instead of better, green or cloudy drainage, fever, or pain that intensifies after the first day or two rather than improving. These signs mean the wound needs medical evaluation.
Reducing Scars After a Burn
Once a burn has fully closed and new skin has formed, silicone-based products are the most effective option for minimizing raised or discolored scars. Silicone gel sheets and fluid silicone gels are considered first-line therapy for preventing and treating thick, raised scars. Research shows they reduce scarring incidence and improve the texture, color, and height of scars. Fluid gels work particularly well on areas where sheets are hard to keep in place, like fingers or the neck.
Apply silicone products consistently over several weeks to months for the best results. Keeping the healed burn moisturized and protected from sun exposure also helps. UV light can permanently darken new scar tissue, so cover healing burns or use a high-SPF sunscreen once the skin has closed.
Tetanus and Burns
Burns are classified as dirty wounds for tetanus purposes. If your last tetanus booster was five or more years ago, a burn injury warrants getting an updated shot. If you’re unsure when your last dose was, mention the burn to a healthcare provider so they can check your vaccination history.