Sun poisoning calls for a combination of cooling, anti-inflammatory, and moisturizing treatments applied directly to the skin. Unlike a mild sunburn that fades in a few days, sun poisoning involves deeper damage that can blister, swell, and even trigger systemic symptoms like fever and chills. What you put on it in the first 24 to 48 hours makes a real difference in how quickly you heal and how much discomfort you experience along the way.
Start With Cool Compresses
Before applying anything medicated, bring the skin temperature down. Soak a clean cloth in cool (not ice-cold) water and drape it over the affected area for 10 to 15 minutes at a time. You can repeat this several times a day. Cool compresses reduce inflammation and provide immediate pain relief without risking further irritation. Avoid ice packs directly on the skin, which can damage tissue that’s already compromised.
A cool bath works too, especially if the burn covers a large area. Adding colloidal oatmeal to the bath is particularly helpful. Use about one cup in the tub and soak for 15 to 20 minutes. Colloidal oatmeal forms a protective film on the skin that locks in moisture and calms inflammation. You can also mix it into a paste with cool water and apply it directly to smaller areas, leaving it on for 15 to 20 minutes before gently rinsing.
Best Topical Treatments for Sun Poisoning
Once the skin is cool and dry, you want something that soothes inflammation and helps the skin retain moisture. Here are the most effective options:
- Aloe vera gel or lotion: Look for pure aloe vera without added fragrances or alcohol, which can sting and dry out damaged skin. Aloe provides a cooling sensation and helps the skin hold onto water during healing.
- 1% hydrocortisone cream: This is the go-to anti-inflammatory for sun poisoning. Apply it to the affected area three times a day for up to three days. It’s available over the counter and works by dialing down the immune response that causes redness, swelling, and itching.
- Calamine lotion: Particularly useful if itching is a major symptom, calamine creates a soothing barrier on the skin as it dries.
For severe reactions with intense swelling or widespread blistering, a doctor may prescribe a stronger corticosteroid cream or a short course of oral corticosteroids to tamp down inflammation from the inside. Some types of sun allergy may even be treated with a medication typically used for malaria, though this is uncommon and only prescribed for specific conditions.
What Not to Put on Sun Poisoning
Some products that seem like they’d help can actually make things worse. Petroleum jelly and other oil-based ointments trap heat and sweat against the skin by clogging pores. This slows healing and can increase discomfort.
Numbing creams containing lidocaine or benzocaine are another common mistake. Despite being marketed for burns, they can cause contact dermatitis and additional irritation on already damaged skin, and they don’t do much for the pain. The Mayo Clinic specifically warns against applying any “-caine” products to sunburned skin.
Also avoid anything with exfoliating ingredients like retinoids, glycolic acid, or alpha-hydroxy acids. These strip away skin cells your body is actively trying to repair. If you normally use anti-aging serums or chemical exfoliants, pause them until the burn has fully healed. When you do need sunscreen on healing skin, choose a mineral (zinc oxide or titanium dioxide) formula rather than a chemical sunscreen, which can irritate sensitive, damaged skin.
Hydration Matters as Much as Topical Care
Sun poisoning doesn’t just affect the surface of your skin. Severely damaged skin loses its ability to hold water effectively, leading to fluid loss through the burned areas themselves. This is why people with sun poisoning often feel exhausted, dizzy, or unusually thirsty. Drinking extra water throughout the day helps counteract this fluid loss and supports your body’s repair process. If you notice signs of dehydration like dry mouth, reduced urination, or persistent dizziness, you may need medical attention for IV fluids.
How Long Recovery Takes
A standard sunburn typically starts improving after about three days. Sun poisoning lasts longer and progresses through distinct stages. The first few days bring peak redness, swelling, pain, and potentially blisters. Over the following week, blisters may drain and the skin begins to peel. Full recovery can take one to two weeks or more depending on severity.
During the peeling phase, resist the urge to pull loose skin. Let it shed naturally and keep the area moisturized with fragrance-free lotion. New skin underneath is extremely sensitive to UV exposure, so covering it with clothing or mineral sunscreen is important to prevent a second burn on top of the first.
Warning Signs That Need Medical Attention
Most sun poisoning can be managed at home, but certain symptoms signal that you need professional help. Seek care if you experience blisters covering more than 20% of your body (roughly an entire leg, your whole back, or both arms), a fever above 102°F, chills, extreme pain that doesn’t respond to over-the-counter treatment, or signs of infection like pus seeping from blisters. Any sunburn in a baby under one year old also warrants immediate medical evaluation.
Medications That Increase Your Risk
If you’ve had a surprisingly severe reaction to what seemed like moderate sun exposure, your medication may be partly responsible. A wide range of common drugs increase skin sensitivity to UV light. These include certain antibiotics (particularly doxycycline and tetracycline), cholesterol-lowering statins, blood pressure medications containing thiazide diuretics, common pain relievers like ibuprofen and naproxen, oral contraceptives, acne treatments containing isotretinoin, and even some antihistamines like cetirizine and diphenhydramine. Alpha-hydroxy acids found in many skincare products also heighten sun sensitivity. If you take any of these and find yourself burning more easily or more severely than expected, that connection is worth exploring with your pharmacist or doctor.