Ice will not help a burn. In fact, applying ice to burned skin can cause additional tissue damage and make the injury worse. The correct first aid for a burn is cool running water, not ice, applied for 20 minutes. This distinction matters because using ice feels intuitive but works against the body’s ability to heal.
Why Ice Makes a Burn Worse
When skin is burned, the injury creates three distinct zones of damage. At the center is dead tissue that can’t be saved. Surrounding that is a critical middle zone where blood flow has slowed but the tissue is still alive. The goal of first aid is to protect this vulnerable middle zone, because if it loses blood supply, the burn deepens and widens.
Ice does the opposite of what you want. Extreme cold triggers blood vessels to constrict, cutting off circulation to the very tissue you’re trying to save. That reduced blood flow can push the already-struggling middle zone past the point of recovery, converting a moderate burn into a deeper, more serious one. There’s also a real risk of frostbite on the burned surface, which is already highly sensitive and has lost its normal protective barrier. You’d essentially be layering a cold injury on top of a heat injury.
Children face an even greater risk. Burned skin loses its ability to regulate temperature, and applying ice or ice water can cause dangerous drops in body temperature. Clinical guidelines from the National Institutes of Health explicitly state that ice or ice water should not be used on burns due to the risk of hypothermia and impaired blood flow, with children singled out as especially vulnerable.
What to Use Instead: Cool Running Water
The gold standard for burn first aid is cool (not cold) running water at around 15°C, or roughly 59°F. Hold the burned area under the tap for 20 minutes. Research using models of deep partial-thickness burns found that this approach improved skin healing over the first two weeks and reduced scarring at six weeks compared to untreated burns.
If you can’t get to running water immediately, you still have a window. Cooling that starts within an hour of the burn, or that lasts as little as 10 minutes, still provides measurable benefit. The key is to use gently cool water, not ice, not ice water, and not freezing compresses. If the burn is large (covering more than about 10% of the body), cool the burned area but keep the rest of the person warm and covered to prevent hypothermia.
Other Home Remedies to Avoid
Ice isn’t the only common instinct that backfires. Butter, toothpaste, cooking oil, and similar household substances have no controlled evidence supporting their use on burns. Robert Sheridan, chief of burns at Shriners Children’s Boston, has pointed out that putting a material rich with bacteria on an open wound is the last thing you want to do. The primary concern with a fresh burn is keeping it moist, clean, and free from infection. Household remedies can trap heat, introduce bacteria, and make it harder for a medical provider to assess the damage later.
How to Tell if Your Burn Needs Medical Care
After cooling, it helps to understand what you’re dealing with. A first-degree burn (like a mild sunburn) only causes skin discoloration and heals on its own. A second-degree burn is more serious: expect blisters, a deep red to dark brown color, shiny or moist-looking skin, swelling, and noticeable pain. A third-degree burn may turn the skin black or white and feel dry. You can have multiple types in the same area.
Burns that cover more than 5% of the body’s surface aren’t considered minor. For reference, the palm of your hand is roughly 1% of your total body surface area. Burns on the face, ears, eyes, groin, or over joints also warrant professional evaluation regardless of size, as do circular burns that wrap all the way around a limb. If you have diabetes or kidney problems, the threshold for seeking care is lower.
Covering the Burn After Cooling
Once you’ve cooled the burn for 20 minutes, the next step is covering it. The goals are simple: keep the wound clean, prevent it from drying out, and protect it from friction.
Cling film (plastic wrap) works surprisingly well as a temporary dressing. It’s essentially sterile straight off the roll, transparent so you or a provider can inspect the burn without removing it, and won’t stick to the wound. Lay it flat over the burn rather than wrapping it tightly around the area, since swelling is common and you don’t want to restrict circulation.
For minor burns treated at home, a non-stick gauze dressing covered with absorbent padding and secured with a bandage is a reliable approach. Avoid applying creams or ointments before a medical evaluation, as they can obscure the burn and make it harder to judge the severity. Clean the wound gently, cover it, and manage pain with over-the-counter options in the meantime.