Ah, summer — the time of year people get to enjoy warm weather, blue skies, swimming, fishing, picnics with friends and family, and many other outdoor activities. But it’s also the time of year when sunburn can become a problem. Sunburn is caused by the sun’s ultraviolet rays. Too much exposure to UV light can damage your skin, making it red and painful. The symptoms may not occur immediately; it can take up to five hours for sunburn to appear. If not treated timely, the burn can lead to peeling or blistering skin. Sunburn also doubles the risk of developing melanoma, a deadly form of skin cancer.