A second-degree burn affects both the outer layer of skin, known as the epidermis, and the underlying layer, called the dermis. This type of burn is characterized by redness, swelling, and blisters. It can be caused by hot liquids, flames, or prolonged exposure to the sun. Healing from a second-degree burn typically takes two to three weeks, depending on the severity. Proper care is essential to prevent infection and promote healing. Over-the-counter pain relievers may help manage discomfort, and it is important to keep the burn clean and covered during the recovery process.