A thin layer of petroleum jelly or aloe vera is the best thing to put on a burn blister. These keep the wound moist, protect the new skin forming underneath, and don’t require a prescription. You should also cover the blister with a non-stick bandage to prevent friction and contamination. What you avoid putting on it matters just as much as what you apply.
Cool the Burn First
Before you reach for any ointment, you need to bring the skin temperature down. Run cool (not cold) water over the burn for several minutes. Cold water or ice can actually make the injury worse by further damaging already fragile skin cells. You want the water to feel comfortable, not shocking.
Once the burn is cooled, gently pat the area dry with a clean cloth. Now you’re ready to apply something.
What to Apply to the Blister
Plain petroleum jelly is the gold standard for burn blisters. It creates a moisture barrier that prevents the wound from drying out, which speeds healing and reduces scarring. Aloe vera gel is another solid option with mild anti-inflammatory properties. Apply a thin layer over and around the blister.
You don’t need antibiotic ointment for most minor burn blisters. Some antibiotic ointments can actually trigger allergic reactions that make things worse. If you do use one, a simple over-the-counter option is enough. Skip anything fancy.
What Not to Put on It
Butter, toothpaste, oil, egg whites, cortisone cream, and regular lotion all need to stay away from your burn blister. Butter and oil trap heat inside the skin, which continues to damage tissue even after the initial burn. Toothpaste causes irritation. Cortisone cream can thin already compromised skin. These home remedies are persistent myths, but every major burn center advises against them.
Don’t Pop the Blister
The fluid inside a burn blister isn’t just swelling. It’s a protective cushion your body created on purpose. That fluid shields the raw skin underneath from bacteria and physical damage while new skin cells grow. The outer layer of the blister acts as a natural bandage, and it does the job better than anything you can buy at a pharmacy.
Popping or draining a blister opens a direct path for bacteria to reach damaged tissue, significantly raising your risk of infection. If a blister breaks on its own, leave the overlying skin in place. It will continue to protect the wound underneath. Gently clean the area, reapply petroleum jelly, and cover it with a fresh bandage.
Choosing the Right Bandage
Cover the blister with a non-stick (non-adherent) dressing. These are sold at any drugstore, often labeled as “non-stick pads” or “non-adherent gauze.” Regular dry gauze is a poor choice because it sticks to the wound as it heals, causing significant pain when you peel it off and potentially tearing new skin.
Hydrocolloid bandages are another good option. These are the same type used for acne patches. They maintain a moist healing environment and stay in place well. Foam dressings and hydrogel pads also work, especially for slightly larger burns. Secure whatever dressing you choose with medical tape or a loose wrap, making sure you’re not applying pressure to the blister itself.
Change the bandage once a day, or sooner if it gets wet or dirty. Each time, gently clean the area, reapply a thin layer of petroleum jelly or aloe vera, and put on a fresh dressing.
Managing the Pain
Burn blisters can throb for the first day or two. Over-the-counter pain relievers like ibuprofen, naproxen, or acetaminophen all help. Ibuprofen and naproxen have the added benefit of reducing inflammation, which can ease swelling around the blister. Follow the dosing instructions on the package.
Keeping the burn elevated when possible also reduces throbbing, especially for hand or arm burns. A cool (not cold) compress placed near but not directly on the blister can provide additional relief.
How Long Healing Takes
A burn blister is a second-degree burn, meaning the damage has reached the second layer of skin. Most small, uncomplicated burn blisters heal within two to three weeks. During the first week, the blister fluid gradually reabsorbs as new skin cells grow underneath. The outer blister skin eventually dries and peels away on its own.
New skin that forms after a burn blister is often pink or red and more sensitive than surrounding skin. This is normal. It may take several additional weeks for the color to even out. Applying sunscreen to the healed area for several months helps prevent permanent discoloration.
Signs of Infection to Watch For
Even with good care, burn blisters can sometimes get infected. Watch for these warning signs:
- Increasing pain that gets worse after the first couple of days instead of better
- Pus-like fluid oozing from the wound, especially if it’s thick, cloudy, or has a foul smell
- Red streaks spreading outward from the burn site
- Fever above 103°F (39°C), particularly combined with any of the above
An infected burn needs medical treatment. Delaying care can lead to deeper tissue damage and scarring.
Burns That Need Professional Care
Not every burn blister is something you should manage at home. Burns on the face, hands, feet, genitals, or over major joints (elbows, knees, shoulders) carry higher risks of complications and scarring. These locations benefit from professional wound care even when the burn looks small.
Burns that wrap around an arm or leg, burns larger than about 3 inches across, and any burn in a child under 10 or an adult over 50 should also get professional attention. Very young and older skin heals differently and is more vulnerable to complications. If you’re unsure whether your burn qualifies as “minor,” err on the side of getting it looked at. Burns are notoriously tricky to assess on your own because the full extent of damage sometimes doesn’t appear for 24 to 48 hours.