A burn blister is a fluid-filled sac that forms on the skin after a burn injury. These blisters often appear with second-degree burns, affecting both the outer and underlying skin layers. The blister acts as a natural protective barrier for the damaged skin, cushioning the area and preventing external contaminants from reaching healing tissue.
Why Not to Pop Burn Blisters
Popping a burn blister is generally not recommended. The fluid inside contains proteins and immune cells that promote wound healing. This fluid creates a sterile environment, shielding delicate new skin from bacteria and reducing infection risk.
When a blister is opened, this natural sterile barrier is compromised. This exposes the raw, sensitive underlying skin, making it vulnerable to bacteria and increasing infection risk. Popping a blister can also delay healing and increase pain. The intact skin acts as a biological dressing, supporting natural recovery.
Caring for Burn Blisters
Proper care for a burn blister depends on whether it is intact or has ruptured. For an intact blister, the primary goal is to keep it clean and protected. Gently wash the affected area with mild soap and cool water, then pat it dry with a clean, soft cloth. Cover the blister loosely with a sterile, non-stick gauze bandage to prevent friction and further damage.
If a burn blister accidentally ruptures, immediate attention is needed to prevent infection. Gently clean the area with mild soap and water. Avoid peeling away any loose skin flap, as this skin can still provide some protection. After cleaning, an antibiotic ointment can be applied if advised by a medical professional, and the area should be covered with a sterile, non-stick dressing. Maintain strict hygiene during these steps to prevent bacterial contamination.
When to Seek Professional Help
Certain circumstances warrant immediate medical attention for a burn blister or the burn itself. Seek professional help if there are signs of infection, such as increased redness, swelling, pus, foul odor, or a fever. A burn blister covering a large area, larger than 2-3 inches in diameter or over 3% of the body’s surface area, should be evaluated by a healthcare provider.
Burns that blister on sensitive body parts, including the face, hands, feet, genitals, or major joints, also require medical assessment. Deep burns that appear white, charred, or leathery, or those that result in numbness, indicate severe tissue damage. If the injured person is an infant, elderly, or has a compromised immune system, medical consultation is important due to their increased vulnerability.