Cool running water is the single best immediate treatment for most burns. Applied within minutes of the injury, it reduces pain, limits tissue damage, and speeds healing. But what you do after that first step depends on the burn’s severity, and getting it wrong (with ice, butter, or toothpaste) can make things worse.
How to Tell if Your Burn Is Minor or Serious
Before treating a burn, you need a quick sense of how deep it goes. A first-degree burn, like a typical sunburn, damages only the outermost layer of skin. It looks dry and red, and it hurts. A second-degree burn goes deeper: the skin is moist, red, blistered, and extremely painful. These two categories are generally safe to treat at home if they’re small.
A third-degree burn destroys the full thickness of the skin. It can look white, brown, black, or waxy, and the surface feels dry and leathery. Paradoxically, it may hurt less than a second-degree burn because the nerves themselves are destroyed. This type always needs professional medical care. The same goes for any burn larger than about 3 inches (8 centimeters) across, any electrical or chemical burn, and burns on the face, hands, feet, groin, or over a joint.
Cool Water First, and for Longer Than You Think
Run cool (not cold) water over the burn for a full 20 minutes. Most people stop far too early. The NHS recommends the full 20 minutes because heat continues to travel deeper into tissue well after the source is removed, and sustained cooling limits that damage.
Do not use ice or ice water. Cold temperatures constrict blood vessels and can injure already-damaged tissue, making the burn worse rather than better. Room-temperature tap water is ideal. If you can’t get to a faucet, a cool, clean wet cloth held against the burn and refreshed frequently works as a backup, though running water is more effective.
What to Put on a Burn After Cooling
Once you’ve cooled the burn for 20 minutes, gently pat it dry. For a simple first-degree burn with intact skin, pure aloe vera gel is one of the best options you’ll find at home. A systematic review of four clinical trials covering 371 patients found that aloe vera shortened burn healing time by an average of nearly 9 days compared to standard treatment. It’s effective enough that Thailand includes it in its official public health drug list as a burn wound therapy. Look for pure aloe vera gel without added fragrances or alcohol, which can sting and irritate.
Avoid applying antibiotic ointment to a fresh, intact burn. Ointments and greasy substances can trap heat in the skin, cause further damage, and raise the risk of infection. The exception: if a blister breaks open on its own, wash the area gently with soap and water, then apply a thin layer of antibiotic ointment and cover it with a bandage.
How to Bandage a Burn Properly
Covering a burn protects it from friction, bacteria, and further irritation. Use a sterile, non-stick (sometimes called non-adherent or petroleum-based) dressing placed directly over the burn. Touch only the edges of the dressing when applying it. Then wrap dry sterile gauze over the top to hold everything in place.
If the burn is on an arm or leg, start wrapping from the point farthest from your body (fingertips before wrist, toes before ankle) and work upward. Secure with tape, but keep it loose. A wrap that’s too tight can cut off circulation to tissue that’s already swollen and vulnerable. Never place dry gauze directly on an open or blistered burn, as it will stick to the wound and tear healing skin when removed.
Managing Burn Pain
Minor burns can be surprisingly painful, especially second-degree burns with blistering. Over-the-counter pain relievers are the first line of defense. Ibuprofen works well because it reduces both pain and inflammation. Acetaminophen is a good alternative if you can’t take anti-inflammatory medications. Taking them on a schedule rather than waiting for the pain to return keeps you more comfortable during the first few days.
As the burn heals, itching often replaces pain. This is normal and actually a sign of recovery. Keeping the area moisturized with aloe vera or a fragrance-free lotion (once the skin has closed) helps manage the itch. Resist the urge to scratch, which can reopen the wound and invite infection.
What Not to Put on a Burn
Several popular home remedies actively make burns worse. Butter, cooking oil, and toothpaste all trap heat against the skin, deepening the injury and increasing infection risk. Ice and ice water cause vasoconstriction that damages tissue further. Even cold water (as opposed to cool water) can worsen the injury.
Egg whites, another common folk remedy, carry a risk of bacterial contamination on raw, broken skin. Stick with clean water, aloe vera, and sterile bandaging materials.
Healing Timeline for Minor Burns
A first-degree burn typically heals in about a week. Second-degree burns with blistering can take up to 3 weeks. During that time, you’ll see the redness gradually fade, blisters may fill and eventually flatten, and new pink skin will form underneath. Some discoloration at the burn site can persist for months, especially on darker skin tones.
Change your dressing once or twice daily, or whenever it gets wet or dirty. Each time, gently clean the area with mild soap and water before reapplying a fresh non-stick dressing.
Signs of Infection to Watch For
A healing burn should steadily improve. If instead you notice oozing, red streaks spreading outward from the wound, increasing pain after the first day or two, or a fever, the burn may be infected and needs medical attention. A burn or blister wider than 2 inches (about 5 centimeters) that isn’t showing improvement within two weeks also warrants a professional evaluation.
Burns are classified as “dirty wounds” for tetanus purposes. If you haven’t had a tetanus booster in the past five years, or you’re unsure of your vaccination history, you may need one, particularly for deeper or more contaminated burns.
Burns That Need Emergency Care
Call 911 or go to an emergency room for burns that look charred or have patches of white, brown, or black. The same applies for burns larger than 3 inches across, burns caused by chemicals or electricity (including lightning), and any burn accompanied by rapid swelling, headache, nausea, confusion, or loss of consciousness. A severe sunburn with a fever above 103°F (39°C) and vomiting also qualifies as an emergency.