A second-degree burn looks red to dark brown, with blisters, shiny or moist skin, and layers of skin that may peel away. It affects both the outer layer of skin and the layer beneath it, which is why it appears wet or glossy compared to a mild sunburn. The blisters are the hallmark feature that separates a second-degree burn from a first-degree burn, which only causes redness and dryness.
How a Second-Degree Burn Looks
The most recognizable sign is blistering, which can develop within minutes or take up to 24 hours to appear. A burn that initially looks like simple redness may reveal blisters the next day, upgrading it from a first-degree to a second-degree burn. The skin around and beneath the blisters typically looks deep red, and the surface appears wet or shiny because the damaged layer underneath produces fluid.
Skin color ranges from bright red to splotchy white to dark brown, depending on the severity and your natural skin tone. The burned area often swells noticeably. If you press gently on the skin near a superficial second-degree burn, it will briefly turn white (blanch) and then return to red, which indicates blood flow is still intact in the deeper tissue.
Superficial vs. Deep Second-Degree Burns
Not all second-degree burns look the same. They fall into two categories based on how deep the damage goes, and each has a distinct appearance.
Superficial partial-thickness burns damage the upper portion of the second skin layer. These are the more common type you’d get from briefly touching a hot pan or spilling hot water. The skin beneath the blister is pink, moist, and very painful to touch. These burns heal within 10 to 21 days and rarely leave scars, though people with darker skin may notice temporary or sometimes permanent changes in skin pigmentation after healing.
Deep partial-thickness burns reach further into the skin and look noticeably different. The color is often mottled, with patches of waxy white mixed with red areas. The surface can appear either wet or dry with a waxy texture. Blisters form but tend to tear open easily. One key visual difference: deep burns may look pale or patchy rather than uniformly red. Hair follicles and sweat glands in the burned area are damaged, so you may notice that hair pulls out easily or the skin feels dry in unusual ways.
Why Second-Degree Burns Hurt So Much
Second-degree burns are typically the most painful type of burn. That sounds counterintuitive since third-degree burns are more severe, but third-degree burns destroy the nerve endings themselves, which can reduce or eliminate pain sensation. A second-degree burn leaves those nerve endings intact but fully exposed and irritated.
Superficial second-degree burns hurt with even light touch or air exposure. Deep second-degree burns are somewhat less sensitive to light touch but still painful when pressed. Pain is often described as intense, throbbing, and worse when the burned area is uncovered. The exposed nerve endings react to temperature changes and air movement, which is why covering the burn with a loose bandage can provide noticeable relief.
How Long Healing Takes
Superficial second-degree burns generally heal in about two to three weeks when kept clean and protected. The blisters gradually dry, new skin forms underneath, and the damaged outer layer peels off on its own.
Deep second-degree burns take significantly longer, often four to six weeks before the wound fully closes. These deeper burns also carry a higher risk of raised, thickened scars because the skin’s regenerative structures are damaged. Some deep second-degree burns may require skin grafting if they fail to heal on their own.
Immediate First Aid
Run cool (not cold) water over the burn for about 10 minutes. If the burn is on your face, hold a cool, damp cloth against the area instead. After cooling, apply a moisturizing lotion like aloe vera to prevent the skin from drying out, then cover the burn loosely with a clean bandage. The bandage keeps air off the exposed nerve endings and protects any blisters from breaking open prematurely.
Avoid ice, which can cause frostbite on already damaged skin. Don’t apply butter, a common home remedy that actually traps heat in the tissue and introduces bacteria. Leave blisters intact when possible, since they act as a natural sterile bandage over the healing skin beneath.
Signs of Infection
Burns are vulnerable to infection because the skin’s protective barrier is broken. Normal healing produces small amounts of clear or slightly yellow fluid, which is expected. What you want to watch for is a change: thick white, yellow, or brown drainage, especially with an unpleasant smell. Redness that spreads outward from the burn edges rather than shrinking over time is another warning sign. Increasing pain after the first few days, rather than gradually improving pain, also suggests something may be wrong.
Burns That Need Professional Care
Small second-degree burns on non-sensitive areas often heal well with home care. But certain burns need medical evaluation regardless of size. Second-degree burns on the face, hands, feet, genitals, or over major joints like the knee or elbow should be seen by a professional because scarring or tightening in these areas can affect function.
Size matters too. For children under 10 and adults over 50, a second-degree burn covering more than 10% of the body’s surface (roughly the area of one arm) warrants burn center referral. For other adults, that threshold is 20%. Burns caused by chemicals or electricity have unique complications that make them more dangerous than they may appear on the surface, so these always need professional assessment even if the visible damage looks minor.