First-degree burns affect only the outermost layer of skin (the epidermis) and typically heal within 7 to 14 days with proper home care. They look red or reddish-brown, feel warm and painful, and don’t blister. The most common causes are brief contact with hot surfaces, steam, and sun exposure. Treating them correctly in the first few minutes makes a real difference in pain and healing time.
Cool the Burn Immediately
The single most important thing you can do is run cool water over the burn for at least 20 minutes. Not ice water, not cold water from the fridge, just cool tap water. Start as soon as possible, ideally within the first hour after the injury. This reduces pain, limits swelling, and prevents the heat already trapped in your skin from continuing to damage deeper tissue.
While you’re cooling the burn, remove any clothing, rings, watches, or bracelets near the area. Burned skin swells, and anything tight around it can cut off circulation as the tissue expands. If clothing is stuck to the burn, don’t pull it off. Cut around it and let a medical professional handle the rest.
Two things to avoid here: ice and butter. Ice and ice water are harsh enough to further injure skin that’s already damaged. Butter, toothpaste, and other greasy home remedies trap heat against the skin, which slows the release of that heat and actually causes more damage. Stick with plain cool water.
Keep the Burn Clean and Moisturized
After cooling, gently wash the area with mild soap and water. Pat it dry rather than rubbing. Then apply a thin layer of aloe vera gel or petroleum jelly to keep the skin hydrated. Dry, exposed burns crack and hurt more, and a simple moisture barrier supports healing without interfering with it. Reapply the ointment once or twice a day, or whenever it dries out.
Cover the burn with a clean, non-stick bandage or gauze. This protects it from friction and bacteria. If the burn is on your fingers or toes, place a small piece of gauze between each digit so they don’t stick together as they heal. Change the dressing daily or whenever it gets wet or dirty.
Managing Pain
First-degree burns hurt, sometimes intensely for the first day or two. Over-the-counter pain relievers like ibuprofen or acetaminophen work well. Ibuprofen also reduces inflammation, which can help with swelling. Take either as directed on the package, and don’t exceed 4,000 milligrams of acetaminophen in a 24-hour period.
Cool compresses throughout the day can provide additional relief. A clean cloth dampened with cool tap water, held against the burn for 10 to 15 minutes at a time, takes the edge off without re-exposing the wound to running water repeatedly.
Treating Sunburns Specifically
Sunburns are the most common type of first-degree burn, and they have a few extra considerations. Because UV damage tends to cover large areas of skin, your body loses more moisture than it would from a small kitchen burn. Drink extra water for at least a full day after a significant sunburn to prevent dehydration.
Cool baths help more than showers when the burn covers your back, shoulders, or chest. Adding about 2 ounces of baking soda to the tub can soothe the skin. After bathing, apply aloe vera gel or a calamine lotion. Cooling the product in the refrigerator before applying it adds extra relief. Avoid any moisturizer that contains alcohol, which dries and irritates burned skin.
If small blisters form (which technically means the burn has crossed into second-degree territory), leave them intact. An unbroken blister acts as a natural bandage, protecting the raw skin underneath while it heals.
What Healing Looks Like
Most first-degree burns follow a predictable pattern. The first two to three days are the most painful, with redness and mild swelling peaking around day two. After that, the pain fades and the skin begins to feel tight and dry. Around day four or five, the damaged top layer starts to peel, similar to how a sunburn peels. This is normal and means new skin is forming underneath.
Don’t pick at peeling skin. Let it come off naturally. The new skin beneath is thinner and more sensitive than the surrounding area, so it may look slightly pink or lighter for a few weeks. A first-degree burn rarely leaves a permanent scar, but the new skin is more vulnerable to sun damage. Keep it covered or use sunscreen for several weeks after healing.
Signs of Infection
Infection in a minor burn is uncommon if you keep the area clean, but it’s worth knowing the warning signs. Normal burn redness stays localized and gradually fades. Infected burns look different:
- Spreading redness that extends beyond the original burn area, especially if a red streak moves away from the wound
- Pus or cloudy fluid draining from the burn
- Increasing pain after the first 48 hours, rather than decreasing
- Swelling that worsens instead of improving
- Fever
- A wound that hasn’t healed within 10 days
Some redness around a healing burn is expected. The key distinction is whether it’s getting better or getting worse. Pain and redness that increase after the second day, rather than gradually improving, are the clearest early signals that something isn’t right.
Burns That Need Medical Attention
True first-degree burns almost always heal fine at home. But it’s easy to misjudge a burn’s severity in the first few hours. If blisters develop, the burn may be second-degree and could benefit from professional wound care. Burns on the face, hands, feet, groin, or over major joints (like knees or elbows) deserve a medical evaluation regardless of how mild they look, because these areas are more prone to complications from scarring or swelling.
Any burn caused by electricity, chemicals, or an explosion requires immediate medical care, even if the skin damage looks minor on the surface. These injuries often cause deeper tissue damage that isn’t visible right away. The same applies to burns in children under 10 or adults over 50, where healing is slower and complications are more likely.