Sun burn is an over exposure to the radiation commonly form sun rays. It usually cause by Ultraviolet radiation that leads to inflammation of the skin. Common signs of sun burn: skin starts to become red and painful after an hour or five of exposure to the sun, sometimes skin blistering occurs, and skin peeling which occurs between 3 days to 8 after exposure. The best treatment for sun burn is prevention. It is necessary to use sunscreen protection, applying SPF 30 or higher is recommended; Protective clothing, sunglasses and wearing hat or cap is necessary to prevent excessive sun exposure. Mild sunburn can be treated at home (by taking a cold shower or bath or by placing wet cloth on the burned area; taking aspirin or applying moisturizing cream or aloe- based lotion provides comfort) while severe one needs medical attention.