A partial thickness burn damages the outer layer of your skin (the epidermis) and extends into the second layer (the dermis). This is what most people know as a second-degree burn. The depth of damage within the dermis determines how painful the burn feels, how long it takes to heal, and whether it leaves a permanent scar.
How Partial Thickness Burns Are Classified
Not all partial thickness burns are the same. They’re split into two categories based on how deep the damage goes into the dermis.
Superficial partial thickness: The burn reaches only the upper portion of the dermis. When blisters break open or are removed, the wound underneath looks uniformly pink or red. If you press on it, the color temporarily fades to white and quickly returns. These burns are painful because the nerve endings in the upper dermis are still intact and exposed.
Deep partial thickness: The burn extends further into the dermis, destroying more tissue. The wound bed looks mottled, with uneven patches of red and white. Pressing on it produces a slow, sluggish return of color rather than a quick one. Somewhat counterintuitively, these deeper burns hurt less than superficial ones because more nerve endings have been destroyed. You may only feel pain with firm pressure.
That blanching response, how the skin reacts when pressed, is one of the key ways clinicians distinguish between the two types. A brisk return of color means the blood supply in the dermis is largely intact. A slow or absent return signals deeper damage.
Common Causes
The most frequent cause of partial thickness burns is contact with hot liquid or steam, often called a scald. Spilled coffee, boiling water, and steam from a pot are classic examples. Fire and direct flame exposure also produce these burns, as do chemical agents like strong acids, lye, paint thinner, and gasoline. Brief contact with a very hot surface, like a stove or curling iron, can also reach partial thickness depth depending on the temperature and how long the skin was exposed.
What to Do Immediately
Cool the burn with running tepid water (around 15°C or 59°F) for up to 20 minutes. This reduces heat stored in the tissue and limits how deep the injury progresses. Don’t use ice or ice water, which can cause further damage to already injured skin. Remove clothing and jewelry from the area if they aren’t stuck to the wound.
Cover the burn loosely with a clean, non-stick covering to protect it while you seek medical care. For anything larger than a few inches, or any burn on the face, hands, feet, genitals, or over a joint, professional evaluation is important.
How Healing Timelines Differ by Depth
The depth of a partial thickness burn directly determines how long recovery takes. Superficial partial thickness burns typically heal within two weeks. At this depth, enough of the dermis is preserved that the skin can regenerate from hair follicles and sweat glands still embedded in the tissue.
Deep partial thickness burns take considerably longer. Those affecting a moderate depth of the dermis generally heal in two to three weeks, while the deepest ones often require more than three weeks. That three-week mark is a meaningful threshold: wounds that take longer than 21 days to close carry a significantly higher risk of developing raised, thickened scars.
Treatment and Wound Care
The goal of treating a partial thickness burn is to keep the wound moist enough to heal without drying out, but not so wet that the surrounding skin breaks down. A properly dressed burn also reduces contamination from bacteria that can cause infection, delay healing, and worsen scarring.
Partial thickness burns often produce moderate to high amounts of fluid drainage, so absorbent dressings like foams and alginates are commonly used. Non-stick films or fine mesh gauze layered with a topical antimicrobial agent are another standard approach. The dressing type depends on the wound’s location, size, and how much fluid it’s producing.
Topical antimicrobial creams are applied to the wound surface before the dressing goes on. These help prevent infection during the vulnerable healing window. Honey-based wound dressings have also shown strong results for superficial partial thickness burns. In systematic reviews, honey dressings improved healing time by nearly six days compared to some conventional options and were more effective at clearing bacterial contamination from the wound.
Dressing changes can be painful, especially for superficial burns where nerve endings are intact. Pain management before and during changes is a normal part of the process.
Scarring Risk
Superficial partial thickness burns that heal within 14 days typically recover completely with minimal scarring. You may notice some temporary color changes in the skin, but the texture and appearance generally return to normal.
Deep partial thickness burns are a different story. Hypertrophic scarring, where the scar becomes raised, thick, and sometimes tight, is a major concern. The longer the wound takes to close, the higher the risk. Burns that heal in two to three weeks carry roughly a 30% chance of noticeable scarring. When healing stretches beyond three weeks, that risk climbs to 70 to 80%.
The body’s location also matters. Burns reaching the depth of certain structures in the dermis (specifically where fat tissue projects upward into the skin) are more prone to hypertrophic scarring. Areas like the forehead, scalp, eyelids, palms, and soles tend to scar less aggressively, while the chest, shoulders, and upper arms are higher-risk zones.
Deep partial thickness burns that are unlikely to heal on their own within three weeks are sometimes treated with skin grafting to close the wound faster and reduce the chance of severe scarring. The decision depends on the burn’s depth, location, and how it responds to initial treatment.
When a Burn Center Is Needed
Most small, superficial partial thickness burns can be managed with outpatient wound care. Larger or deeper burns may need specialized treatment. National referral guidelines recommend transfer to a dedicated burn center for partial thickness burns covering more than 20% of total body surface area in adults ages 10 to 50, or more than 10% in children under 10 and adults over 50. Burns involving the face, hands, feet, genitals, major joints, or circumferential burns around a limb also meet referral criteria regardless of size.