A second-degree burn is a moderate injury that damages both the outer layer of skin (epidermis) and the layer beneath it (dermis). It’s significantly more painful and slower to heal than a first-degree burn like a sunburn, but it’s usually not life-threatening when it covers a small area. How “bad” it actually is depends on two things: how deep into the dermis the damage reaches, and how much of your body it covers.
Two Types, Two Levels of Severity
Not all second-degree burns are equal. They fall into two categories based on depth, and the difference matters for healing, pain, and scarring.
Superficial partial-thickness burns damage the upper portion of the dermis. These are the ones most people picture: bright red, wet-looking skin that’s extremely painful to the touch. They weep fluid, blanch white when you press them, and often form blisters. They hurt a lot because the nerve endings in the dermis are exposed and intact. The good news is they typically heal within two to three weeks without surgery, and scarring is usually minimal.
Deep partial-thickness burns reach further into the dermis and are more serious. The skin may look mottled, with patches of waxy white mixed with red. Blisters form easily and break open. Oddly, these burns can feel less painful on the surface because deeper nerve endings are damaged, though pressure on the area still hurts. They take longer to heal, often three to six weeks or more, and carry a real risk of permanent scarring. Some deep partial-thickness burns require skin grafting if they aren’t healing on their own.
What It Looks and Feels Like
The hallmark of a second-degree burn is blistering. If your burn has blisters, it has almost certainly reached the dermis. The burned area will be red or splotchy, swollen, and wet from fluid leaking out of damaged tissue. Pain is often intense, especially with shallower burns, and can throb for hours or days.
You can manage pain with over-the-counter medications like ibuprofen or acetaminophen. Ibuprofen has the added benefit of reducing inflammation. For larger or deeper burns, prescription pain management may be necessary.
Immediate First Aid
What you do in the first few minutes matters. Run cool (not cold) water over the burn for about 10 minutes. Cold water or ice can actually make the injury worse by constricting blood flow to already-damaged tissue. If the burn is on your face, hold a cool, wet cloth against it instead.
Remove rings, watches, or tight clothing near the burn before swelling starts. Cover the area loosely with a clean bandage to protect it and reduce pain from air exposure. Don’t pop blisters. They act as a natural sterile barrier against infection. If one breaks on its own, gently clean it with water and apply an over-the-counter antibiotic ointment.
Skip the home remedies. Butter, toothpaste, and oils trap heat in the skin and make things worse. And if clothing is stuck to the burn, leave it in place rather than pulling it off and tearing more tissue.
When a Second-Degree Burn Needs Emergency Care
A small second-degree burn on your forearm is a very different situation from one covering your hand, face, or a large area of your body. National burn referral criteria flag these situations as needing specialized care:
- Burns covering more than 20% of the body in adults aged 10 to 50
- Burns covering more than 10% of the body in children under 10 or adults over 50
- Burns on the face, hands, feet, genitals, or over major joints
- Burns combined with other injuries like fractures or blast trauma
- Electrical or chemical burns (which often cause deeper damage than they appear to)
Burns on the hands, feet, and joints get flagged because scarring in those areas can limit mobility permanently. Facial burns carry risks to the eyes and airways. If you’re unsure whether your burn qualifies, the size of your palm (including fingers) represents roughly 1% of your total body surface area. That gives you a quick way to estimate.
How Healing Works
Superficial second-degree burns heal from the bottom up. Surviving cells in the upper dermis regenerate new skin, and the process is largely complete within two to three weeks. During that time, the area will be tender, and new skin may look pink or slightly different in color from surrounding tissue.
Deep second-degree burns heal more slowly and less predictably. When burns take longer than three weeks to close on their own, scarring becomes much more likely. In a clinical setting, treatment typically involves cleaning the wound, removing dead tissue, applying antimicrobial ointments, and covering the area with specialized dressings that get changed every one to three days. Your tetanus vaccination status will also be checked and updated if needed.
Prophylactic antibiotics (taken orally to prevent infection before it starts) are generally not recommended for small to moderate burns. The focus is on keeping the wound clean and protected rather than medicating preemptively.
Scarring and Long-Term Skin Changes
Shallow second-degree burns rarely leave permanent scars. Deep ones can, and certain factors increase the risk. Some people develop hypertrophic scars, which are raised, ridged areas of overgrown scar tissue. Keloids, a more pronounced version, extend beyond the original burn boundary. Black people have a higher risk of this type of scarring and may benefit from early evaluation by a burn specialist or surgeon.
Even without raised scarring, skin color changes are common after second-degree burns. The healed area may end up lighter or darker than the surrounding skin, and this difference can be permanent. Sun protection on the healing area is important during the first year, as new skin is especially vulnerable to UV damage and pigment changes.
Signs of Infection
Infection is the biggest complication risk with second-degree burns because the skin’s protective barrier is broken. Watch for increasing redness spreading beyond the burn edges, swelling that gets worse instead of better, green or yellow discharge, an unusual smell from the wound, or fever. Any of these warrants prompt medical attention, as burn wound infections can escalate quickly and may require professional wound care or prescription antibiotics.