For a minor burn, the single most important thing you can do is run cool water over it for at least 20 minutes. That step alone reduces tissue damage, lowers pain, and improves healing more than any ointment or home remedy. The water should be cool, not cold, at roughly 59°F (15°C), which is about the temperature of comfortable tap water. Starting this within minutes of the injury makes the biggest difference, but cooling is still beneficial even if you’re delayed.
Most burns people deal with at home are minor: a splash of hot oil, a brush against an oven rack, a curling iron to the skin. Here’s how to handle them properly and how to tell when a burn needs professional care.
Step-by-Step First Aid for Minor Burns
Remove the heat source and get the burned area under cool running water immediately. Keep it there for a full 20 minutes. This feels like a long time, and most people stop too early. Set a timer. The cooling doesn’t just relieve pain on the surface; it pulls heat out of deeper tissue layers, limiting how far the injury spreads. If running water isn’t available, a cool, wet cloth can substitute, though it’s less effective.
While cooling, remove any jewelry, watches, or tight clothing near the burn. Burned skin swells quickly, and a ring or bracelet can cut off circulation if you wait too long. After 20 minutes of cooling, gently pat the area dry and cover it with a clean, non-stick bandage. Loose gauze works well. Avoid wrapping too tightly, especially around fingers, toes, or limbs where swelling can build.
Over-the-counter pain relievers like ibuprofen or acetaminophen help manage the soreness that follows. For adults and children over 12, combination tablets of acetaminophen and ibuprofen can be taken every eight hours as needed, up to six tablets per day. Keep total acetaminophen under 4,000 milligrams in 24 hours.
What Not to Put on a Burn
Butter, toothpaste, coconut oil, and egg whites are all popular folk remedies, and all of them make burns worse. These substances trap heat in the skin, which is the opposite of what you need. They also introduce bacteria into broken tissue, raising the risk of infection. Ice and ice water are equally harmful. They constrict blood vessels so aggressively that they can cause frostbite-like damage on top of the burn and push the body toward hypothermia, especially in children or when the burn covers a large area.
Stick with cool (not cold) water and leave the home remedies in the kitchen.
How to Tell How Serious Your Burn Is
Burns are categorized by depth, and knowing the difference helps you decide what to do next.
First-degree (superficial): Only the outermost layer of skin is affected. The burn looks pink or red, feels painful, and is dry with no blisters. A typical sunburn falls here. These heal on their own within a week or so.
Second-degree (partial-thickness): These go deeper into the skin. Blisters are the hallmark, and the skin underneath is red, wet, and very painful. A shallow second-degree burn heals in two to three weeks. Deeper second-degree burns look more mottled in color, hurt less (because some nerve endings are damaged), and take longer to heal. They may need medical treatment.
Third-degree (full-thickness): The burn extends through all layers of skin and into the tissue beneath. The area looks white, brown, or leathery and feels stiff. Counterintuitively, these burns are painless because the nerves are destroyed. Third-degree burns always require professional care and often surgery.
When a Burn Needs Emergency Care
Size and location matter as much as depth. Get medical help right away for any of the following:
- Third-degree burns covering more than about a palm-sized area (roughly 5% of your body)
- Second-degree burns on the face, hands, feet, groin, or over a joint (these areas are functionally critical and prone to complications)
- Large second- or third-degree burns covering more than 10% of the body in children under 10 or adults over 50, or more than 20% in other adults
- Chemical or electrical burns of any size (these cause damage beneath the surface that’s hard to assess at home)
- Burns with inhalation injury, meaning you also breathed in hot air, steam, or smoke
- Burns combined with other injuries like fractures from a fall or explosion
A quick way to estimate burn size: the palm of the injured person’s hand, including the fingers, represents roughly 1% of their total body surface area.
Caring for a Burn as It Heals
For minor burns you’re managing at home, the goal shifts from cooling to keeping the wound clean and protected. Wash the area gently once or twice a day with mild soap and lukewarm water. Pat dry and apply a thin layer of antibiotic ointment or plain petroleum jelly, then cover with a fresh non-stick bandage. Silicone-impregnated gauze dressings are a good option if available, since they peel away without pulling on new skin.
Leave blisters intact whenever possible. An intact blister acts as a natural sterile dressing, protecting the raw skin underneath from bacteria. If a blister pops on its own, clean the area, apply ointment, and re-bandage it.
Burned skin itches intensely as it heals. This is normal and a sign of recovery, but scratching can reopen the wound. Cool compresses and gentle moisturizers help. New skin will be pink and more sensitive than surrounding tissue for weeks to months. Keep healed burns out of direct sunlight or cover them with clothing, since newly formed skin burns far more easily.
Signs of Infection to Watch For
Any burn that breaks the skin can become infected. Watch the wound daily for these warning signs:
- Increasing redness that spreads beyond the burn’s edges into healthy skin
- Thick, discolored drainage (yellow, green, or cloudy fluid rather than the clear seeping that’s normal early on)
- Fever above 101°F (38.4°C)
- A burn that gets worse instead of better, especially a partial-thickness burn that deepens or turns dark
- Increasing pain after the first day or two, rather than gradually improving
Infected burns can deteriorate quickly. A wound that was healing fine and then suddenly changes appearance, especially if it starts producing pus or the surrounding skin becomes hot and swollen, needs medical attention promptly.