A bad sunburn needs immediate cooling, consistent moisturizing, anti-inflammatory pain relief, and extra hydration. Most sunburns heal on their own within one to two weeks, but the first 24 to 48 hours determine how much pain and peeling you’ll deal with. Acting quickly makes a real difference.
Figure Out How Bad It Is
Sunburns fall into two categories. A first-degree sunburn damages only the outer layer of skin. It’s red, warm, and tender, but the surface stays intact. A second-degree sunburn goes deeper into the middle layer of skin and produces blisters. If your skin is blistering across a large area, that’s a more serious injury that may need medical attention.
Beyond the skin itself, watch for signs that your body is struggling systemically: fever, severe chills, nausea, headache, confusion, dizziness, or rapid breathing and pulse. Facial swelling, signs of dehydration (extreme thirst, dry mouth, no urine output), or eyes that hurt and are light-sensitive all warrant immediate medical care. These symptoms can indicate sun poisoning or heat illness, which go well beyond a typical burn.
Cool Your Skin Down
The first thing to do is get out of the sun and start cooling the burn. Use cool water, not ice-cold. You can take a cool shower or bath, or apply cool, damp cloths to the burned areas. There’s no precise number of minutes that research has proven ideal, but 15 to 20 minutes is a reasonable target. You can repeat this several times throughout the first day.
Avoid ice or ice packs directly on the skin. Burned skin is already damaged, and extreme cold can injure it further. The goal is to draw heat out gradually, not shock the tissue.
Moisturize While Skin Is Still Damp
After cooling, gently pat your skin mostly dry and apply a moisturizer while it’s still slightly damp. This traps moisture in the skin and helps reduce the tight, dry feeling that gets worse as the burn develops. Pure aloe vera gel is a popular choice because it cools on contact and has mild anti-inflammatory properties. Fragrance-free moisturizing lotions also work well.
Avoid anything petroleum-based (like Vaseline) in the first day or two. These products seal heat into the skin rather than letting it escape. Similarly, skip butter, coconut oil, or other heavy oils during the acute phase. Once the burn has cooled and you’re in the peeling stage, heavier moisturizers become fine.
Manage Pain and Inflammation
Over-the-counter anti-inflammatory pain relievers like ibuprofen or naproxen do double duty: they reduce pain and tamp down the inflammatory response driving the redness and swelling. These work best when taken early, ideally as soon as you notice the burn developing. They won’t shorten how long the sunburn lasts, but they’ll make those first couple of days significantly more bearable.
For topical relief, a 1 percent hydrocortisone cream (available without a prescription) can help reduce inflammation in the most painful areas. Apply a thin layer to the worst spots. This is a better option than numbing sprays or creams containing benzocaine or lidocaine. Those “-caine” products can cause allergic reactions on damaged skin, including additional blistering, stinging, and swelling. On sunburned skin that’s already compromised, more of the drug gets absorbed into your body than normal, increasing the risk of side effects.
Drink Extra Water
A sunburn draws fluid toward the surface of your skin and away from the rest of your body. The more skin that’s burned, the greater the fluid shift. You’ll likely feel thirstier than usual, and that’s your body telling you something real. Drink extra water for at least a full day after the burn, and longer if the burn is widespread. Avoid alcohol during this period, as it accelerates dehydration.
Leave Blisters Alone
If your sunburn has produced blisters, resist the urge to pop them. Blisters are your body’s natural bandage. The fluid inside cushions the damaged tissue underneath and protects it from infection while new skin forms. Popping them opens a direct path for bacteria and slows healing.
If a blister breaks on its own, gently clean the area with mild soap and water, apply a thin layer of antibiotic ointment, and cover it loosely with a non-stick bandage. Watch for signs of infection over the following days: increasing redness that spreads beyond the burn, warmth, swelling, pus, or red streaks radiating outward. These need medical attention.
What to Wear and Avoid
Loose, soft clothing made from breathable fabric will be your best friend for several days. Anything tight or rough will irritate burned skin and make the pain worse. If the burn is on your shoulders or back, a loose cotton shirt is far more comfortable than anything fitted.
Stay out of the sun entirely while you’re healing. This sounds obvious, but even brief exposure through a car window or during a short walk can intensify the damage. If you have to go outside, cover the burned areas with clothing rather than relying on sunscreen, which can sting on raw skin.
The Peeling Phase
Peeling typically starts three to five days after the burn and can continue for a week or more. This is your body shedding the dead, damaged cells to make room for new skin underneath. Don’t pick at it or pull off loose sheets of skin, tempting as it is. Pulling can tear skin that isn’t ready to come off yet, leaving the tender layer below exposed and vulnerable.
Continue moisturizing generously during this phase. It won’t prevent peeling entirely, but it keeps the skin softer and reduces itching. If itching becomes intense, the hydrocortisone cream can help here too.
Protect Your Skin Long After It Heals
New skin that forms after a sunburn is significantly more sensitive to UV radiation, and that sensitivity can last a year or more. Once you’ve healed, use a broad-spectrum sunscreen with SPF 30 or higher on those areas whenever you’re outdoors. Look for a product that protects against both UVA and UVB rays, is water-resistant, and gets reapplied according to the label directions. Don’t forget your lips: a lip balm with SPF 30 or higher, reapplied frequently, protects an area most people overlook.
A bad sunburn is one of the strongest predictors of long-term skin damage. The pain fades, the peeling stops, but the DNA damage to your skin cells accumulates over a lifetime. Treating the burn well now minimizes scarring and discomfort, but protecting that skin going forward is what matters most in the long run.