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How long does sunburn last, varies based on severity. Mild cases can resolve in a few days, while severe burns may take weeks. Typically, sunburn symptoms peak around 24-36 hours after sun exposure, with redness, pain, and swelling. Peeling often follows as the skin attempts to heal. To alleviate discomfort, apply cool compresses, moisturisers, and aloe vera. Drink plenty of water to stay hydrated and avoid further sun exposure. Severe sunburns may require medical attention if accompanied by blistering, fever, or extreme pain. Prevention is key: use sunscreen, seek shade, and wear protective clothing to shield skin from harmful UV rays.