Aloe vera gets all the attention, but plenty of other remedies can cool sunburned skin, reduce inflammation, and speed healing. Some are already in your kitchen, others are inexpensive at any drugstore, and a few work even better when combined. Here’s what actually helps and what to avoid.
Why Sunburn Hurts So Much
UV radiation activates ion channels in your skin cells that flood them with calcium, triggering a cascade of inflammatory signals. Your skin releases a compound called endothelin-1, which amplifies pain by stimulating the nerve endings woven through your outer skin layer. White blood cells, including pain-enhancing neutrophils, rush to the area. This is why sunburn keeps getting worse for 12 to 24 hours after you come inside: your body is still ramping up its inflammatory response.
Understanding this helps explain why the best sunburn remedies work on two fronts: cooling the skin to provide immediate relief and reducing the underlying inflammation that prolongs discomfort.
Cool Compresses and Cold Milk
A cool, damp cloth applied for 10 to 15 minutes is one of the simplest ways to draw heat out of burned skin. Use cool water, not ice. Ice or ice packs can damage already-injured skin and restrict blood flow right when your body needs it for repair.
Cold milk takes the compress a step further. Milk contains lactic acid, which gently clears dead skin from the surface of the burn, and antioxidant proteins that help reduce inflammation. Soak a small washcloth in a bowl of whole milk that’s been chilling in the fridge, then drape it over the burned area. The cold temperature soothes on contact, and the milk proteins leave a thin film that continues to calm the skin after you remove the cloth. Repeat every few hours as needed.
Colloidal Oatmeal Baths
Colloidal oatmeal (oats ground into a fine powder that suspends in water) is one of the most effective over-the-counter options for sunburn itch and irritation. It works by suppressing a key inflammatory pathway in skin cells, reducing the production of the same pro-inflammatory signals your body ramps up after UV exposure. An oat bath also helps rebuild your skin’s moisture barrier: lipid compounds in the oats stimulate ceramide production, which is the waxy molecule that holds your outer skin layer together like mortar between bricks.
You can buy colloidal oatmeal bath packets at most pharmacies, or make your own by blending plain, unflavored oats in a food processor until they’re powder-fine and dissolve in water rather than sinking. Add a cup to a lukewarm bath and soak for 15 to 20 minutes. Keep the water cool to lukewarm. Hot water dilates blood vessels and intensifies the burn.
Cucumber
Cucumber isn’t just a spa cliché. The fruit contains lignans, plant compounds that help relieve both itching and inflammation from sunburn. Its high water content (about 95%) delivers natural hydration to damaged skin, and it has mild antioxidant properties. Blend chilled cucumber into a paste and apply it directly to burned areas, or lay thin slices over smaller patches. The cooling effect is immediate, and the moisture helps counteract the dryness that makes sunburned skin feel tight and uncomfortable.
Anti-Inflammatory Pain Relievers
What you swallow matters as much as what you put on your skin. Taking ibuprofen or naproxen as soon as possible after sun exposure helps interrupt the inflammatory cascade before it peaks. These work from the inside by blocking prostaglandins, the chemical messengers that drive swelling, redness, and pain. Acetaminophen can reduce pain but does not fight inflammation, so it’s less effective on its own.
The key is timing. Your body’s inflammatory response builds over hours, so starting early gives the medication a chance to blunt the worst of it. Taking a dose before bed on the night of a burn can also reduce the discomfort that typically peaks the next morning.
Moisturizers That Actually Help
Once the initial heat fades (usually after the first day or two), your biggest enemy is dryness. Burned skin loses moisture rapidly, which leads to tightness, flaking, and peeling. A fragrance-free, water-based moisturizer applied while skin is still slightly damp from a shower or bath locks in hydration. Look for ingredients like glycerin, hyaluronic acid, or ceramides on the label.
Soy-based moisturizers are another option worth considering. Soy proteins help soothe irritated skin and support the repair of your skin’s outer barrier. Apply these generously and frequently, at least two to three times per day, until peeling stops.
What to Avoid on Sunburned Skin
Some popular “remedies” make sunburn worse. Petroleum jelly and oil-based ointments clog pores and trap heat, preventing sweat from escaping. This keeps the burned area hotter longer and can slow healing.
Numbing sprays and creams labeled “anaesthetic” or containing ingredients ending in “-caine” (like benzocaine) deserve extra caution. Benzocaine is a frequent cause of allergic contact dermatitis. Applying it to already-inflamed skin increases your risk of sensitization, which means you could develop a full allergic reaction. In severe cases, this causes blistering on top of the burn. If an existing rash or burn flares or spreads after using a numbing product, stop immediately.
Butter, coconut oil, and other cooking fats fall into the same category as petroleum jelly. They feel soothing for a moment but seal in heat. Harsh soaps, exfoliating scrubs, and products containing alcohol or retinol should also be shelved until your skin fully heals.
Hydration From the Inside
Sunburn draws fluid to the skin’s surface, pulling it away from the rest of your body. This is why a bad burn can leave you feeling fatigued, dizzy, or unusually thirsty. Drinking extra water in the 48 hours after a burn helps your body manage the swelling and supports skin repair. If your urine is dark yellow, you’re behind.
When a Sunburn Needs Medical Attention
Most sunburns heal on their own within a week, but some cross the line into a medical problem. Seek treatment if blisters cover more than 20% of your body (roughly an entire leg, your full back, or both arms), if you develop a fever above 102°F, or if you notice signs of dehydration like dizziness, dry mouth, and reduced urination. Pus seeping from blisters signals infection. Any sunburn on a baby under one year old warrants immediate medical care.