The first step in treating sunburn is to stop further UV exposure and move into shade or indoors. Continued exposure to sunlight can worsen the injury while the skin is already inflamed and damaged. The NHS recommends cooling the affected skin with a cool shower, bath or damp towel, followed by a soothing aftersun product or unperfumed moisturiser. Cooling reduces discomfort and can temporarily reduce the sensation of heat and pain.
Ice or ice packs should not be applied directly because extreme cold can cause additional tissue injury to already damaged skin. The affected area should remain protected from direct sunlight until it has fully healed. Sunburn generally improves over several days, and the NHS states that it usually gets better within about seven days, although more severe burns can take longer.
Moisturising can help reduce dryness, tightness and discomfort as the damaged outer skin barrier recovers. The AAD recommends moisturiser containing aloe vera or soy while the skin is still damp, while the NHS recommends aftersun cream or an unperfumed moisturiser. Products should be applied gently rather than rubbed aggressively into painful skin. The purpose of moisturiser is symptomatic and barrier support; it does not reverse the DNA damage already caused by UV radiation.
Peeling is part of the recovery process as damaged epidermal cells are shed, and it should not be forcibly removed. Scratching or pulling peeling skin can create additional injury and increase the possibility of secondary infection. Treatment therefore focuses on cooling, hydration, comfort and protection while the skin repairs itself.
Pain and inflammation from sunburn can often be managed with appropriate over-the-counter analgesics. The NHS states that paracetamol or ibuprofen can help ease pain, with medication taken according to the product instructions. The AAD also identifies ibuprofen as an option for reducing discomfort and swelling. Not every painkiller is suitable for every person, so contraindications such as kidney disease, stomach ulcers, anticoagulant use, pregnancy and allergies should be considered before taking non-steroidal anti-inflammatory drugs. Children require age-appropriate products and doses.
Pain relief does not accelerate repair of the UV-induced DNA damage; it primarily improves symptoms while the inflammatory process resolves. If pain is severe or disproportionate to the visible injury, medical assessment is appropriate because a more serious burn or another condition may be present.
Sunburn can contribute to dehydration because inflammation and damage to the skin alter fluid distribution, while severe burns can be accompanied by heat exposure and increased fluid loss. The NHS advises drinking plenty of water and avoiding alcohol while recovering from sunburn. Adequate fluid intake is particularly important if the person has also been sweating heavily or has symptoms of heat exhaustion.
Drinking water cannot repair the skin directly, but it helps maintain normal hydration while the body manages the inflammatory response. People with conditions requiring fluid restriction, such as certain forms of heart or kidney disease, should follow their clinician's advice rather than automatically increasing fluid intake. Dizziness, weakness, nausea, headache, muscle cramps, high temperature or confusion after substantial sun exposure can indicate heat-related illness rather than ordinary uncomplicated sunburn and should prompt appropriate medical assessment.
Blisters indicate more significant skin injury and should generally be left intact rather than deliberately punctured. The NHS advises not to pop sunburn blisters because opening them damages the protective barrier and can increase infection risk. The AAD likewise advises allowing blisters to heal naturally and keeping them clean. If a blister breaks accidentally, the area should be kept clean and protected rather than having the remaining skin forcibly removed.
Large, extensive or painful blisters may require professional assessment, particularly when the affected area is extensive or involves the face, hands, feet or genital region. Sunburn affecting babies and young children also warrants a lower threshold for medical advice. The presence of blistering should therefore be treated as an indication of a more substantial burn rather than as an ordinary cosmetic consequence of sun exposure.
The NHS advises against applying petroleum jelly directly to acute sunburn and against using ice or ice packs. These recommendations reflect the fact that heavily occlusive products can be uncomfortable on inflamed skin and that direct ice can cause cold injury. Gentle cooling and appropriate moisturising are preferred. The skin should also not be covered with tight clothing because friction and pressure can aggravate pain and damaged tissue.
Once the burn begins peeling, the loose skin should be allowed to detach naturally. There is no topical product capable of instantly “cancelling” UV damage. Products marketed as aftersun can soothe symptoms, but the key therapeutic measures remain ending exposure, cooling the skin, maintaining hydration, controlling pain and protecting the area from further UV. Any treatment that causes increasing pain, irritation or a new rash should be stopped and reviewed.
Medical attention is appropriate when sunburn is severe or accompanied by systemic symptoms. The NHS recommends urgent GP assessment or NHS 111 advice when the skin is blistered or swollen, when the person has a very high temperature or feels hot, cold or shivery, or when they develop severe tiredness, dizziness, nausea, headache or muscle cramps. These findings can indicate extensive burn injury, dehydration, heat exhaustion or heatstroke. Babies and young children with sunburn should also receive prompt medical advice.
Confusion, collapse, seizures, severe breathing abnormalities or loss of consciousness require emergency assistance. The location and extent of the burn also matter: burns involving large areas or sensitive anatomical regions may require professional treatment even if the person otherwise feels well. The aim of medical assessment is to identify complications and provide appropriate supportive treatment rather than merely to treat redness.
Once a sunburn has occurred, prevention of additional exposure becomes part of treatment. The affected skin should remain covered or shaded until it has completely healed because recently injured skin is particularly vulnerable to additional UV damage. The burn does not provide useful “conditioning” against another burn. Repeated sunburn increases cumulative UV exposure and contributes to long-term skin-cancer risk and premature skin ageing.
After recovery, protective habits should include shade, suitable clothing, a hat, UV-protective sunglasses and correctly applied broad-spectrum sunscreen. A sunburn should therefore be regarded as a warning that the preceding exposure exceeded the skin's protective capacity. Although most uncomplicated cases recover without specific medical treatment, the biological consequences of UV exposure remain important even after the visible redness, pain and peeling have disappeared.
