Cool the burn under running water for at least 20 minutes. That single step, done as soon as possible after the injury, is the most important thing you can do to limit tissue damage and reduce pain. Everything else in burn care builds on getting that first response right.
Identify How Serious the Burn Is
Burns fall into three categories based on how deep the damage goes, and knowing which you’re dealing with helps you decide what to do next.
A first-degree burn affects only the outermost layer of skin. It causes redness, minor swelling, and pain, similar to a mild sunburn. These heal on their own within a few days.
A second-degree burn reaches the second layer of skin. It often looks wet or moist, the skin may appear red, white, or splotchy, and blisters typically develop. Pain from second-degree burns can be intense. Healing takes one to three weeks on average, depending on the size and location.
A third-degree burn extends through all layers of skin and sometimes into the fat and muscle beneath. The burned area may look black, brown, white, waxy, or leathery. Because these burns destroy nerve endings, you may feel surprisingly little pain in the center of the wound, even though the injury is severe.
When a Burn Needs Emergency Care
Some burns require professional treatment regardless of how they feel in the moment. Get to an emergency room or burn center if any of the following apply:
- Location: The burn involves the face, hands, feet, genitals, or major joints.
- Size: Second- or third-degree burns covering more than about 20 percent of the body in adults, or more than 10 percent in children under 10 or adults over 50.
- Depth: Any third-degree burn larger than roughly 5 percent of the body’s surface area.
- Cause: Chemical burns, electrical burns, or burns caused by lightning.
- Breathing involvement: Any sign of inhaling smoke, steam, or hot gases.
- Other injuries: Burns combined with fractures or blast injuries.
Immediate First Aid Steps
Remove the source of the burn first. If clothing is stuck to the skin, leave it in place. Then hold the burned area under cool, running water for a full 20 minutes. This isn’t a suggestion to cut short. Twenty minutes is what it takes for the deeper tissue to stop retaining heat and causing further damage.
Use cool water, not cold. Ice and ice water can actually increase tissue damage, making the injury worse. After cooling, loosely cover the burn with a clean cloth or cling wrap to protect it from the air while you figure out next steps.
What Not to Put on a Burn
Butter, toothpaste, egg whites, flour, and milk are all common home remedies that do more harm than good. Butter traps heat against the skin. Toothpaste contains ingredients like sodium fluoride, which irritates exposed tissue, and substances like glycerol and sorbitol that can actually encourage bacterial growth in an open wound. Mint flavoring in toothpaste intensifies the burning sensation rather than soothing it.
Ice is another common mistake. While it seems logical, the extreme cold constricts blood vessels and can deepen the injury. Stick with cool running water.
Caring for the Burn as It Heals
For minor burns you’re treating at home, wound care is straightforward but needs to be consistent. Cover all open burn areas with a sterile, non-stick dressing. These are petroleum-based or specially coated bandages designed not to bond with the raw skin underneath. Pulling a regular gauze pad off a healing burn is painful and can tear new tissue. Change the dressing every day.
Aloe vera gel is one topical treatment with solid evidence behind it. A meta-analysis of randomized controlled trials found that aloe vera shortened healing time for first- and second-degree burns by nearly three days compared to silver sulfadiazine cream, which has long been a standard clinical treatment. If you use aloe vera, choose pure gel without added fragrances or alcohol.
Do not pop blisters. They act as a natural sterile bandage, protecting the damaged skin beneath. If a blister breaks on its own, gently clean the area, apply a thin layer of antibiotic ointment, and cover it with a non-stick dressing.
Managing Pain
Over-the-counter pain relievers work well for most minor burns. Ibuprofen reduces both pain and inflammation, while acetaminophen targets pain without the anti-inflammatory effect. You can alternate them if one alone isn’t enough. For ibuprofen, a standard dose is 400 mg every eight hours. For acetaminophen, 1,000 mg every six hours is typical, but don’t exceed 4,000 mg in a 24-hour period to protect your liver.
Keep the burned area elevated when possible, especially in the first few days. Swelling increases pressure on damaged nerve endings, and elevation helps fluid drain away from the injury.
Watching for Infection
Burns are especially vulnerable to infection because the skin’s protective barrier has been compromised. Check the wound daily when you change the dressing and watch for these warning signs:
- Increasing redness or red streaks spreading outward from the burn
- Swelling that gets worse instead of gradually improving
- Cloudy or foul-smelling drainage from the wound
- Fever developing days after the initial injury
- Increased pain after a period of improvement
Any of these signs mean the burn needs medical attention. Infected burns can deteriorate quickly and may need prescription antibiotics.
Reducing Scars After Healing
Once the skin has closed and new tissue has formed, scar management becomes the priority. Two approaches have the strongest evidence: silicone therapy and sun protection.
Silicone gel or silicone sheets worn for at least 12 hours a day over 8 to 12 weeks can significantly flatten and fade scars. The silicone hydrates the scar tissue and regulates collagen production, which is what causes raised, thickened scars. If you use silicone gel, let it dry completely before applying anything else on top. If you use silicone sheets, apply sunscreen to the skin around the edges, or cover the area with UV-protective clothing.
New scar tissue is extremely sensitive to sun damage. UV exposure can cause permanent discoloration, turning healing scars darker than the surrounding skin. Apply a broad-spectrum sunscreen with SPF 30 or higher to any exposed scar, and reapply every two hours when you’re outdoors. This matters for at least a full year after the burn, and longer for deeper injuries. Consistent protection during this window makes a noticeable difference in the scar’s final appearance.