First-degree burns are very minor. After a burn, the skin may become red, swollen, painful, and show signs of oozing and swelling. Light pressure on the injury site may cause it to turn white, but there should be no blisters. Second-degree burns are deeper. The skin will have blisters. The bottom of the blisters may be red or white and filled with clear, sticky fluid. When they are gentle, sensitive, and under pressure, they may turn white. Third-degree burns are very deep, with the burn surface possibly being white, soft, or even black.