Run cool water over the burn for at least 20 minutes. That single step does more to reduce pain, limit tissue damage, and speed healing than anything else you can do at home. The water should feel cool but comfortable, not ice cold. Start as soon as possible after the burn happens.
Why Cool Running Water Works
When skin burns, heat continues traveling deeper into tissue even after you pull away from the source. Cool running water draws that residual heat out, slowing the chain reaction of cell damage beneath the surface. It also reduces swelling and provides immediate pain relief.
The 2024 American Heart Association and American Red Cross guidelines call cooling with running water “an established and beneficial intervention with little risk of harm.” Leading international organizations recommend cooling for anywhere from 5 to 20 minutes, though many burn centers advise the full 20. If the burn still hurts significantly when you stop, you can continue a bit longer.
Hold the burned area under a gentle stream from the tap. You don’t need high pressure. If the burn is on a spot that’s hard to get under a faucet (your torso, for example), soak a clean cloth in cool water and drape it over the area, re-wetting it frequently so it doesn’t warm up and sit against the burn like an insulator.
Why Ice Makes Burns Worse
Reaching for ice feels instinctive, but it’s one of the worst things you can do. Ice and ice packs placed directly on skin cause cold burns of their own, damaging cells and cutting off blood flow to the area. Cold injuries can develop within minutes, and they’re deceptive: unlike heat burns, you may not feel the damage happening because cold numbs the nerves before it harms the tissue underneath.
If cool running water isn’t available and ice is all you have, wrap it in a towel first and limit contact to no more than 10 minutes. But running tap water remains the first choice every time.
Skip Butter, Toothpaste, and Other Home Remedies
Butter, cooking oil, toothpaste, and egg whites are all common folk remedies that can actively harm a burn. Greasy substances trap heat against the skin, which is the opposite of what you need. Toothpaste contains chemicals that irritate damaged tissue. Any unsterile substance you smear on an open wound introduces bacteria and raises the risk of infection. Stick with clean, cool water and nothing else during the initial cooling phase.
How to Tell If a Burn Needs Medical Care
Burns fall into three broad categories, and knowing which one you’re dealing with helps you decide what to do next.
First-degree burns affect only the outer layer of skin. They look red and dry, similar to a sunburn, and they hurt. Most heal on their own within a week. A small cooking splash or brief contact with a hot surface usually falls here.
Second-degree burns go deeper. The skin looks moist and red, forms blisters, and is extremely painful. These take longer to heal and carry a higher infection risk. Small second-degree burns (smaller than about 3 inches across) can often be managed at home with proper wound care, but larger ones need professional treatment.
Third-degree burns destroy the full thickness of the skin. They can appear white, black, brown, or waxy. Paradoxically, they may hurt less than second-degree burns because the nerves in the skin have been destroyed. These always require emergency care.
Regardless of degree, get medical attention for any burn on the face, hands, feet, genitals, or over a joint. Burns that wrap all the way around an arm or leg also need professional care. The same goes for burns in children under 10 or adults over 50 that cover more than 10 percent of the body, and burns in other age groups covering more than 20 percent.
Chemical Burns Are Different
If the burn comes from a chemical rather than heat, thorough irrigation with large amounts of water is still the most important step. Start flushing immediately and continue for much longer than you would with a thermal burn, at least 15 to 20 minutes or until emergency services arrive.
There are a few exceptions. Dry lime (calcium oxide) should be brushed off the skin before you add water, because it reacts with water and generates heat. Elemental metals like sodium and potassium, along with phenol, also react dangerously with water. If you know the specific chemical involved, check for water-reactive warnings first. For everything else, flush immediately and generously. All chemical burns warrant medical evaluation.
Electrical Burns Need Emergency Care
Electrical burns are misleading. The visible mark on the skin may look minor, but electricity travels through the body and can damage the heart, muscles, and brain along the way. Symptoms like irregular heartbeat, muscle spasms, numbness, confusion, or difficulty breathing can appear after what looks like a small surface wound. Cooling the skin helps with the surface injury, but it does nothing for the internal damage. Anyone who has sustained an electrical burn should be evaluated in an emergency department, even if the burn looks small.
Covering the Burn After Cooling
Once you’ve cooled the burn for 20 minutes, gently pat the area dry with a clean cloth. Don’t rub. If the skin is intact and it’s a minor first-degree burn, you can leave it uncovered or apply a thin layer of plain aloe vera gel.
For any burn with broken skin or blisters, cover it with a non-stick dressing or a piece of clean plastic wrap. The goal is to protect the wound from friction, dirt, and bacteria without sticking to the raw surface. Place the non-stick layer directly over the burn, then wrap lightly with gauze to hold it in place. Don’t wrap tightly, as swelling is common and a tight bandage can cut off circulation. If you’re using ointment, spread it on the dressing rather than directly on the burn, and use a clean utensil rather than your fingers to avoid contaminating the wound.
Don’t pop blisters. They act as a natural sterile bandage over the damaged skin underneath. If a blister breaks on its own, clean the area gently and cover it with a non-stick dressing.
Managing Pain at Home
Minor burns hurt, sometimes for days. Over-the-counter pain relievers like acetaminophen or ibuprofen are effective for most first-degree and small second-degree burns. Ibuprofen has the added benefit of reducing inflammation. Take either according to the package instructions. Keeping the burn covered and moist with a non-stick dressing also reduces pain, since exposure to air irritates exposed nerve endings in damaged skin.