Run cool water over the burn for at least 20 minutes. That single step, done within the first three hours after a scald, is the most effective thing you can do to limit tissue damage and reduce pain. The water should be cool, not ice cold, ideally around 59°F (15°C). While the burn is cooling, you can assess how serious it is and decide what to do next.
Cool the Burn Right Away
As soon as hot water, steam, or another hot liquid contacts your skin, the heat keeps damaging tissue even after the source is removed. Running cool tap water over the area stops that process. Hold the burned skin under a gentle stream or pour water over it steadily for a full 20 minutes. It’s longer than most people expect, but shorter cooling times are less effective at preventing deeper injury.
While you cool the burn, remove any clothing or jewelry near the area before swelling starts. If fabric is stuck to the skin, don’t pull it off. Just cool around it. Do not apply ice, ice water, butter, toothpaste, or any greasy household product. Ice restricts blood flow to the wound and can cause cold injury on top of the burn. Butter and petroleum jelly trap heat in the skin and introduce bacteria. Toothpaste irritates the wound and increases the risk of scarring.
How to Tell How Serious It Is
Burns fall into three broad categories based on depth, and each one looks and feels different.
First-degree (superficial): The skin is pink or red, dry, and painful, but there are no blisters. Only the outermost layer of skin is affected. These burns heal on their own in 5 to 10 days without scarring.
Second-degree (partial-thickness): Blisters form, and the skin underneath is red, wet-looking, and very painful. These burns reach the deeper layers of skin and typically heal in 2 to 3 weeks. Deeper second-degree burns can look mottled or take longer to blanch when you press on them, and they may require medical treatment to heal properly.
Third-degree (full-thickness): The skin appears leathery, stiff, white, or charred. Surprisingly, these burns are painless because the nerves are destroyed. They always require professional treatment and often surgery.
Burns That Need Medical Attention
Not every scald requires a trip to the emergency room, but certain burns should always be seen by a professional. Seek medical care if the burn covers an area larger than your palm, or if it involves the face, hands, feet, genitals, or any major joint like the knee or elbow. Any burn that goes all the way through the skin (third-degree) needs treatment regardless of size. Children under 10 and adults over 50 have thinner skin and higher complication risk, so the threshold for seeking care is lower.
Burns are classified as “dirty wounds” for tetanus purposes. If you haven’t had a tetanus booster in the past five years, or if you’re unsure of your vaccination history, a booster is recommended.
Caring for Minor Burns at Home
Once you’ve cooled the burn for 20 minutes and confirmed it’s a minor first- or shallow second-degree injury, home care focuses on keeping the wound clean, moist, and protected.
Gently wash the area with mild soap and water. Pat it dry with a clean cloth. Apply a thin layer of plain antibiotic ointment or aloe vera, then cover with a non-stick bandage. Standard gauze can stick to a raw burn and tear new skin when you change it, so look for silicone-coated or non-adherent dressings at the pharmacy. These allow fluid to drain while protecting the wound bed.
Change the dressing once a day, or sooner if it gets wet or dirty. Each time, gently clean the wound and reapply ointment before covering it again.
What to Do About Blisters
If blisters form, your instinct might be to pop them. For small blisters (smaller than your pinky fingernail), leave them intact. The blister acts as a natural sterile bandage, protecting the raw skin underneath while it heals. Larger blisters are more likely to rupture on their own, and medical professionals generally recommend draining those in a clean setting to prevent messy, uncontrolled breakage. If a large blister forms, it’s worth having it assessed rather than managing it yourself.
Managing Pain During Healing
Scalds hurt, especially in the first few days. Over-the-counter pain relievers like ibuprofen (Advil, Motrin) or acetaminophen (Tylenol) work well for burn pain. Ibuprofen has the added benefit of reducing inflammation. Naproxen (Aleve) is another option. Follow the dosing instructions on the label, and avoid giving aspirin to anyone under 18.
Keeping the burn covered also helps with pain. Exposed nerve endings in a partial-thickness burn react to air currents and temperature changes, so a light dressing provides a surprising amount of comfort.
Signs of Infection to Watch For
Burns are especially vulnerable to infection because the skin’s protective barrier is compromised. During the healing process, check the wound daily for warning signs: increasing redness that spreads beyond the burn’s original edges, pus or discharge that’s yellow or green, a foul smell coming from the wound, or worsening pain after the first couple of days. Fever, chills, or feeling generally unwell alongside any wound changes also signal a possible infection that needs medical treatment.
In rare cases, small burns can develop atypical infections. If you notice an unusual pattern of tiny blisters forming along the edges of the healing wound, that can indicate a viral infection rather than a bacterial one, and it warrants a visit to your doctor.
Minimizing Scars
First-degree burns almost never scar. Second-degree burns can leave marks, especially deeper ones, and what you do during and after healing makes a difference.
Once the wound has fully closed and no raw skin remains, silicone-based products are the most effective option for scar prevention. Silicone gel sheets and fluid silicone gels are considered the first-line treatment for abnormal scarring, particularly after burns. They work by keeping the new skin hydrated and flattening raised scar tissue over time. You can find silicone scar sheets at most pharmacies. Apply them as directed for several weeks to months for the best results.
Protecting healed burn skin from the sun is also important. New skin is more susceptible to UV damage and hyperpigmentation, so keep the area covered or use a high-SPF sunscreen for at least the first year.