Why Skin Grafts Sometimes Fail: Pressure, Infection, Smoking and the Signs Your Team Watches

The dressing comes off on day five, and for a moment nobody speaks. The patch of skin sitting over the bridge of the nose, where a skin cancer was removed the week before, is not the pink the leaflet promised. Part of it is dusky. One corner has lifted like a stamp that never quite stuck. The surgeon leans in with a light, presses gently, and says the words everyone was waiting to hear or dreading: it is early, and some of this will settle.

That scene plays out in clinics every day, and it captures why skin graft failure signs are so hard for patients to read on their own. A graft is a piece of skin moved without its blood supply. For the first few days it is, quite literally, living on borrowed time, waiting for the wound underneath to feed it. Most of what goes wrong happens in that window.

This article explains what a graft needs to survive, the three things that most often stop it, and how your team tells a graft that is struggling from one that is simply healing slowly.

What a skin graft actually is, and what surgeons mean by "take"

A skin graft is a piece of healthy skin removed from one part of the body (the donor site) and placed over a wound elsewhere that cannot close on its own. Unlike a flap, which stays attached to its own arteries and veins, a graft is cut free completely. It has no blood supply of its own when it lands on the wound bed. Everything depends on the bed adopting it.

Surgeons describe a graft that has been adopted as having “taken.” Take means the graft has bonded to the wound, new capillaries have grown into it from below, and the tissue is alive and getting oxygen. A graft that has not taken is one that never received that blood supply, or lost it, and the tissue dies.

Two broad types matter for this discussion. A split-thickness graft includes the top layer of skin (epidermis) and part of the layer beneath (dermis). It is thin, needs relatively little blood to survive, and is often used for larger areas such as burns or leg wounds. A full-thickness graft includes the entire dermis. It is thicker, matches surrounding skin better in color and texture, and is often chosen for the face, the eyelids and the nose. The trade-off is that thicker tissue has more cells to feed, so a full-thickness graft is less forgiving of a poor bed or a delay in blood supply.

The MedlinePlus skin graft overview notes that most grafts heal well, but that healing is not guaranteed and depends heavily on the condition of the wound and on care in the first days. That is where the rest of this article lives.

How does a skin graft survive? The three stages your team is counting on

Understanding how long a skin graft takes to attach explains almost every rule you will be given afterward. Surgical texts summarized on the NIH National Library of Medicine’s skin grafting chapter describe three overlapping phases.

The first is plasmatic imbibition. Imbibition simply means soaking. For roughly the first 24 to 48 hours the graft has no circulation at all; it survives by drawing nutrient-rich fluid from the wound bed, the way a dry sponge pulls up water. The graft swells slightly, and a thin layer of fibrin (a natural clotting protein) glues it loosely in place.

The second phase is inosculation, a word borrowed from the Latin for “kissing.” Tiny blood vessels at the base of the graft begin to line up with vessels in the wound bed and connect end to end. This starts around day two or three. The connections are fragile; a small shift can tear them apart.

The third phase is revascularization. New capillaries actively grow up from the bed into the graft, and by about days four to seven a graft that has taken has a working blood supply. MedlinePlus puts the start of this vessel formation at roughly 36 hours after surgery, which is why dressings are usually left undisturbed for several days.

Three practical lessons follow. The graft needs intimate contact with the bed, so anything that lifts it (blood, fluid, air) is dangerous. It needs stillness, so movement across the surface is dangerous. And it needs a bed that can grow vessels, so infection, dead tissue, poor circulation and nicotine are dangerous. Every failure cause in this article is one of those three problems wearing a different coat.

What is the most common cause of skin graft failure?

Ask a plastic surgeon what kills grafts and the answer is rarely dramatic. The single most common culprit described in surgical teaching, including the NIH library chapter cited above, is a hematoma or seroma under the graft. A hematoma is a collection of blood; a seroma is a collection of clear or straw-colored fluid. Either one forms a cushion between the graft and the wound bed.

Why is that fatal to tissue? Recall the first two phases of take. The graft must soak up fluid from the bed, then link its vessels to the bed’s vessels. A layer of pooled blood even a couple of millimeters thick is enough to break that contact. The graft above the pocket is stranded. It may still look acceptable for a day or two while it lives on imbibition, then it turns dark as the cells run out of oxygen.

Small bleeds are common because a fresh wound bed is raw and vascular by design; that same rich blood supply is what will eventually feed the graft. Surgeons reduce the risk in several ways. They control bleeding meticulously before laying the graft. They may make small slits in the graft (called fenestration, or meshing when done in a pattern) so that fluid can escape rather than collect underneath. They apply a bolster, which is a firm pad sewn or taped over the graft to press it evenly against the bed. Some teams use negative pressure wound therapy, a sealed foam dressing attached to a gentle suction pump, which holds the graft down and draws fluid away.

For patients, the takeaway is that the quiet instructions matter most. Blood thinners, alcohol, straining, bending over and hot showers all raise the chance of a bleed under the graft in the first days. Your team’s advice on each of these is individual, and any change to a prescribed medicine should come from the prescribing clinician, not from a leaflet.

Pressure and shear: why a skin graft must not move

Pressure has a double life in graft care. Steady, even pressure from a bolster is protective; it keeps the graft flat against the bed and discourages fluid from pooling. Uneven, moving pressure is destructive. The word surgeons use is shear: a sliding force across the surface, the kind you generate by rubbing your hand over a tabletop.

During inosculation, the new vessel connections between graft and bed are as delicate as wet paper. A graft that slides even a millimeter can snap those connections and has to start over, if it can start over at all. Sources of shear are rarely obvious. A tight collar dragging across a neck graft, a pillow against a cheek graft during sleep, a bandage that has worked loose and now rolls with every step, or a knee joint bending under a leg graft are typical examples. On the face, the biggest offenders are facial expression, chewing and talking near a graft on the lip or cheek, and glasses resting on a nose graft.

This is why post-operative instructions can feel excessive. Patients with a lower-leg graft may be told to keep the leg elevated and walk very little for the first several days. Patients with a facial graft may be asked to eat soft foods and to avoid animated conversation. The Cleveland Clinic skin graft guide describes keeping the area still and protected and avoiding strenuous activity for several weeks while the graft strengthens.

Excessive sustained pressure is a separate risk. A bolster tied too tightly, or a patient lying directly on a graft for hours, can squeeze the tiny new vessels shut. Your team balances this deliberately, which is one reason you should never tighten, loosen or replace a graft dressing yourself unless you have been shown exactly how.

Skin graft infection signs and how bacteria undo a graft

Infection is the second great enemy of a graft, and it works in two ways. Bacteria release enzymes that dissolve the fibrin glue holding the graft to the bed, so the graft literally floats off. They also trigger inflammation and swelling in the bed, which crowds out the new capillaries trying to grow upward. A heavily infected bed will not grow vessels into anything.

Every surgical wound carries some bacteria; what matters is the number and the type. Surgeons have long noted that a wound bed with a high bacterial load, including chronic ulcers and wounds with dead tissue, is a poor candidate for grafting until it has been cleaned. That is why some patients are asked to wait while a wound is dressed and debrided (dead tissue removed) before grafting is attempted.

Recognizing skin graft infection signs matters because early treatment can sometimes save part of a threatened graft. The CDC’s surgical site infection overview lists redness spreading beyond the wound edge, increasing pain, warmth, swelling, cloudy or foul-smelling drainage and fever as the signals to report. Around a graft specifically, teams also watch for a graft that was pink and is now surrounded by a widening red rim, for a yellow-green film on the surface, and for a dressing that has become wet and smells sour or sweet.

Not every change is infection. A thin, clear or pinkish weep in the first days is expected, as is a little bruising at the edges. Mild redness in a narrow band right along the suture line is part of normal healing. The distinction your team draws is direction of travel: redness that is shrinking is healing, redness that is marching outward is not. If infection is confirmed, treatment is decided by the treating team and may involve wound cleaning, a change of dressing regimen and, where appropriate, an antibiotic chosen for the organism involved.

Smoking, nicotine and the small vessels a skin graft depends on

Of all the risk factors a patient can influence, smoking is the one surgeons speak about most bluntly. The reason is mechanical, not moral. Nicotine constricts small blood vessels, including the capillaries at the wound bed that are meant to grow into the graft. Carbon monoxide in smoke binds to hemoglobin, the oxygen-carrying protein in red blood cells, so the blood that does arrive carries less oxygen. Smoke also thickens the blood slightly and makes platelets stickier, which raises the chance of tiny clots in the very vessels that are trying to sprout.

A graft during the first week is a tissue living at the edge of its oxygen supply. Anything that trims that supply can tip a borderline graft into failure, and smoking trims it from several directions at once. The effect is not confined to the graft; the donor site heals more slowly too, and the risk of wound infection rises because immune cells travel less efficiently through constricted vessels.

The Johns Hopkins Medicine skin graft page lists smoking among the factors that can interfere with graft healing, alongside poor circulation and diabetes. Surgical guidance more broadly advises stopping smoking before elective surgery and staying stopped through the healing period; the specific interval your surgeon asks for depends on the procedure and on you.

Two points are often missed. First, nicotine is the vasoconstrictor, so nicotine replacement products, vaping and smokeless tobacco are not automatically neutral for a graft, and their use around surgery is a conversation to have with your surgeon rather than a private workaround. Second, the harm is dose- and time-related, so a smoker who has stopped for a period before surgery has genuinely improved the odds, even if quitting for life is not yet on the table. If you smoke and are facing a graft, tell your team honestly; they plan differently, and that planning protects you.

Other reasons a skin graft may not take: diabetes, circulation, steroids and radiation

Beyond the big three, a cluster of conditions make a wound bed less able to grow vessels or fight bacteria. None of them rules out grafting; each changes how carefully the team prepares and watches.

Diabetes affects grafting through several routes. High blood glucose stiffens small vessels and blunts the immune response, which raises infection risk. Nerve damage can mean a patient does not feel a dressing rubbing or a bolster cutting in. Good glucose control before and after surgery is part of graft care, managed by the patient’s usual clinicians.

Poor circulation, especially peripheral arterial disease in the legs, is one of the commonest reasons a lower-limb graft struggles. If the arteries feeding the wound are narrowed, the bed cannot deliver the blood a graft needs. Venous disease matters too: a swollen, congested leg leaks fluid into the bed and encourages seroma. Teams often assess blood flow before grafting a leg wound and may address circulation first.

Long-term corticosteroids, some immune-suppressing medicines and certain cancer treatments slow the cell growth that healing depends on. Radiation to an area, whether years ago or recently, leaves skin and underlying tissue with fewer working vessels and more scar; grafting onto irradiated tissue is possible but recognized as higher risk. Poor nutrition, particularly low protein, deprives the wound of building blocks, and the MedlinePlus overview lists poor overall health among the factors that reduce the chance of a graft healing.

Where a medicine is involved, the decision about whether to adjust it around surgery sits with the prescribing clinician, weighing the graft against the reason the medicine was started. Patients should never pause or change a prescription on their own initiative.

Who is a skin graft usually for, and who is usually asked to wait

A graft is chosen when a wound is too large or too deep to close by pulling the edges together, and when a flap is unnecessary or unsuitable. Common reasons include skin cancer removal, particularly on the face, scalp and lower leg; burns; chronic ulcers that have been cleaned to a healthy base; traumatic skin loss; and reconstruction after other surgery. In facial reconstruction, a full-thickness graft is often favored for the nose, eyelid and ear because it resists shrinking and matches color, while split-thickness grafts cover broad areas elsewhere.

A good candidate has a wound bed that is clean, free of dead tissue and bleeding healthily, along with general health that supports healing. Age alone is not a barrier; many grafts are performed in people in their eighties and nineties, whose thin skin and slower healing simply demand extra care.

Patients are commonly asked to wait, or offered an alternative, when the bed is not ready. That includes wounds with visible infection or a heavy bacterial load, wounds with exposed bone, tendon or cartilage without a covering layer of tissue (a graft cannot draw nutrition from bare bone), and wounds in a leg with very poor arterial flow. A patient who is actively smoking may be asked to stop for a period first. Someone whose diabetes is poorly controlled may be asked to work on that before an elective graft. Recent radiation to the area, or a planned course of radiation soon after, prompts a careful discussion about timing.

Alternatives include letting a wound heal by itself with dressings (secondary intention), which works well for some small facial wounds; a local flap that brings its own blood supply; or a two-stage approach in which the bed is prepared with dressings or negative pressure therapy and grafted later. Which path fits is a decision for the treating team with the patient, based on the wound in front of them.

Skin graft failure signs: what does a failed skin graft look like?

The most common question after any graft is whether the color is normal. Reading a graft is genuinely difficult in the first week, because healthy grafts pass through colors that look alarming. The table below compares what teams usually consider expected with what prompts a closer look. It is a guide to the conversation, not a tool for diagnosing yourself.

What you see	Often expected	Often a concern
Color	Pale, mottled or mildly bruised purple in the first days; pink by the first or second dressing check	Dark purple deepening to gray or black; a white, waxy patch that does not pink up
Surface	Slight swelling; a thin dry scab at the edges	Graft lifting, sliding or wrinkling; a thick black or leathery crust (eschar) over part or all of the graft
Fluid	Small amount of clear or pink-tinged weep	Cloudy, yellow-green or foul-smelling drainage; fluid or blood bulging under the graft
Surrounding skin	Narrow pink band along the suture line that fades	Spreading redness, heat and swelling beyond the wound edge
Symptoms	Mild soreness that eases day by day	Pain increasing after day two or three; fever or chills

A graft that has fully failed tends to look dry, dark and shrunken, as if a piece of black or brown paper were stuck to the wound. It may be firm and separate from the edges. A partly failed graft is more common than a total loss: an island or a corner dies while the rest takes, leaving a raw patch that often heals on its own from the edges over the following weeks.

Two cautions. Dark discoloration in the first days is sometimes a superficial layer of the graft that sloughs off to reveal living tissue beneath, so teams avoid pronouncing on a graft too early. And on darker skin tones, color change is harder to judge; teams rely more on texture, temperature and what the edges are doing.

How long after a skin graft can it fail? A week-by-week picture

Most failures are decided in the first week, because that is when the graft is waiting for a blood supply. The NIH library chapter places revascularization at roughly days four to seven, so by the end of the first week a graft has generally either connected or it has not. The first dressing check, commonly around day three to seven depending on the site and the surgeon, is the moment most teams form their first real opinion.

That does not mean a graft is safe once a week has passed. Infection can develop later and lift a graft that had begun to take. Trauma, a knock or a fall, can shear a graft in week two, when it is attached but still weak. The Cleveland Clinic guide advises protecting the site and avoiding strenuous activity for several weeks for exactly this reason. Late loss after the third or fourth week is uncommon and usually traceable to an event rather than to the graft quietly failing.

A typical timeline, with the usual caveat that every wound and surgeon differ:

• Days 0 to 2: graft is pale or mottled, living on imbibition; bolster stays on, movement kept to a minimum.
• Days 3 to 7: first dressing change; team assesses color, adherence and any fluid; sutures or staples may remain.
• Weeks 2 to 3: graft firmer and pinker; sutures often removed; gentle washing usually allowed; still no rubbing, soaking or heavy activity.
• Weeks 3 to 6: graft settling; MedlinePlus notes that pressure garments or protective coverings may be advised and that the healed skin is fragile and easily damaged.
• Months 3 to 12: color and texture continue to change; some grafts darken, some lighten, and full maturation of both graft and donor site can take a year or more.

Treat these ranges as typical rather than promised. A leg graft in someone with poor circulation may run slower at every stage; a small facial full-thickness graft in a healthy non-smoker often runs faster.

What percent of skin grafts fail? What the evidence actually shows

Patients reasonably want a number, and the honest answer is that there is no single figure that would be true for your graft. Reported take rates in surgical literature vary enormously depending on graft type, wound location, the reason for the wound, the patient’s health and how take was measured. A thin split-thickness graft on a clean surgical wound in a healthy non-smoker behaves nothing like a full-thickness graft over an irradiated bed in a person with diabetes and leg circulation problems, and pooling them into one percentage would mislead more than it informs.

What mainstream sources agree on is directional. The MedlinePlus, Cleveland Clinic and Johns Hopkins pages cited in this article all state that most grafts heal successfully, while listing infection, fluid collection under the graft, movement, smoking, poor circulation and diabetes as the reasons some do not. The NIH library chapter identifies hematoma and seroma as the leading cause, with infection and shear following.

Total failure of an entire graft is less common than partial loss. Many grafts lose a small area, often at an edge or over a spot where fluid collected, and the remaining graft, along with the surrounding skin, closes that gap over the following weeks. Whether that counts as a failure depends on who is counting. A surgeon measuring take as a percentage of area might record 90 percent take; the patient may see a hole and call it a failure. Both descriptions are accurate.

Rather than asking for a universal number, a more useful question for your surgeon is: given my wound, my health and my history, what do you expect, and what would you do if part of it does not take? The answer will be specific to you and grounded in far more information than any published average. Be wary of any source, online or otherwise, that quotes a precise success rate without saying which grafts, in which patients, it applies to.

What happens if a skin graft doesn't take

Hearing that a graft has not taken is a blow, particularly on the face, where the wound is visible and the wait has been anxious. It is worth knowing that a failed graft is a setback in healing, not the end of it, and that teams have well-worn paths forward.

The first step is usually assessment rather than action. A graft that looks dark at the first check may be shedding a superficial layer while the deeper part survives, so many surgeons will dress it and look again in a few days before declaring it lost. If part of the graft has clearly died, the dead tissue is removed, a process called debridement, either with dressings that soften it or with a scalpel in clinic. Removing dead tissue matters because it harbors bacteria and blocks healing beneath.

Small areas of loss are very often left to heal by themselves. Skin cells migrate in from the surviving graft and from the wound edges, and a raw patch a few millimeters across on the face can close over two to four weeks with simple dressings. Larger losses may need a second graft once the bed has recovered and any infection has cleared. Sometimes the team uses the interval to improve the bed with negative pressure wound therapy or specialized dressings before regrafting. Occasionally a different reconstruction is chosen the second time, such as a local flap, if the bed has proved unable to support a graft.

Whatever the path, the cause is examined. Was there a bleed underneath? Did the dressing slip? Was there infection, and if so which organism? Is smoking, glucose control or circulation part of the picture? Addressing that cause before a second attempt is the single most useful thing that comes out of a failed graft. Your team leads these decisions, and it is entirely reasonable to ask them to explain the plan and the reasoning step by step.

What people often get wrong about skin graft healing

A handful of beliefs about grafts circulate widely, and several of them make failure more likely. Here are the ones clinicians correct most often.

“If it looks dark, it’s dead.” Not necessarily. Early bruising, mottling and a superficial layer that sloughs can all look like death and are not. Equally, a graft can be pale and pretty and still be failing underneath. Color is one clue; adherence, warmth, fluid and the trend over days are others. Leave the verdict to someone who has seen hundreds.

“Airing the wound helps it heal.” For a graft in the first two weeks, exposure invites drying, knocks and bacteria. Grafts want a moist, covered, still environment. Follow the dressing plan you were given.

“A little peek won’t hurt.” Lifting a bolster to check underneath can shear the graft and break the fragile vessel connections forming in days two to five. If you are worried, call; do not look.

“Vaping is fine because it isn’t smoke.” Nicotine is the vasoconstrictor, and most vaping products deliver it. Discuss any nicotine use with your surgeon rather than assuming it is exempt.

“Vitamins and creams will make it take.” Good general nutrition supports healing, but there is no supplement or topical product shown to rescue a graft that is separating from its bed or infected. Applying anything not prescribed to a fresh graft can trap bacteria or loosen the graft.

“Once the sutures are out, I’m done.” MedlinePlus notes healed graft skin is fragile and easily damaged, and that protection from sun and friction continues for months. Grafts also cannot sweat or produce oil normally at first, so moisturizing a healed graft, once your team says so, matters more than people expect.

“The donor site is the easy part.” Split-thickness donor sites are often the most painful part of recovery and can become infected too. They need the same respect.

Questions to ask your care team before and after a skin graft

A good consultation leaves you knowing what to expect and what to do when something looks off. These questions help you get there; write the answers down, because the details blur once you are home.

Before surgery:

• Is my wound bed ready for a graft now, or would you prefer to prepare it first, and why?
• Are you planning a split-thickness or full-thickness graft, and what does that choice mean for how my graft will look and heal?
• Where will the donor skin come from, and what will that site feel and look like afterward?
• What is my personal risk of the graft not taking, given my health, medicines and habits, and what would change that risk?
• If I smoke or use nicotine, how long do you want me to stop beforehand and afterward?
• Which of my regular medicines, if any, need to be discussed with the clinician who prescribes them before surgery?

After surgery:

• Exactly how still do I need to keep this area, and for how long? What positions, movements or activities should I avoid?
• When is my first dressing check, and who do I call if the dressing slips, soaks through or comes off before then?
• What does normal look like at each stage, and what would make you want to see me sooner?
• How should I manage the donor site, and what pain is expected there?
• When can I wash, shower, apply moisturizer or wear glasses or makeup near the graft?
• If part of the graft does not take, what is your usual plan, and how long would we wait before deciding?
• What should I expect the graft to look like at three months, and at a year?

Asking these is not second-guessing your team; it is the collaboration that protects the graft once you are the one watching it around the clock.

When to call your doctor: red-flag skin graft failure signs

You will be given a contact number for the team who performed your graft. Use it. Surgeons would far rather hear about a false alarm on day three than see a lost graft on day seven. Contact your team promptly, the same day, if you notice any of the following:

• The graft dressing or bolster has slipped, come loose or fallen off before the planned check.
• The dressing is soaked through with blood, or you can see or feel a soft bulge of fluid or blood under the graft.
• The graft has turned dark purple, gray or black, or a part of it has lifted, slid or wrinkled.
• Redness, heat or swelling is spreading outward from the wound edge rather than shrinking.
• Drainage has become cloudy, yellow-green or foul-smelling.
• Pain is increasing after the first two or three days instead of easing, or pain has changed character to throbbing or burning.
• You develop a fever, chills or feel generally unwell.
• The donor site shows any of the same changes.

Seek urgent care, through emergency services or the nearest emergency department, if bleeding will not stop with steady pressure, if you have a high fever with confusion or a racing heart, if a red streak is tracking away from the wound up a limb, or if the area around a facial graft swells rapidly enough to affect your vision, breathing or swallowing. These are uncommon but need immediate attention.

A final, quieter red flag: a graft that simply looks wrong to you. Patients often sense a change before they can describe it. Describe what you see and when it started; photographs, if your team has said they are useful, can help them judge the trend over days. Every decision about whether a graft is failing, what caused it and what to do next belongs with your treating team, and the earlier they know, the more options they have.

Frequently asked questions

How long after a skin graft can it fail?

Most failures are determined in the first week, when the graft is waiting for blood vessels to grow in from the wound bed, a process surgical sources place at roughly days four to seven. A graft can still be lost later to infection or a knock, especially in weeks two and three while it is attached but weak, which is why activity restrictions continue for several weeks.

What percent of skin grafts fail?

There is no single reliable figure, because take rates vary widely with graft type, location, wound cause and patient health. Mainstream sources agree that most grafts heal and that fluid under the graft, infection, movement, smoking, poor circulation and diabetes account for most losses. Ask your surgeon what they expect for your specific wound rather than relying on a general percentage.

What is the most common cause of skin graft failure?

A collection of blood (hematoma) or fluid (seroma) under the graft is the leading cause described in surgical teaching. It lifts the graft away from the bed so vessels cannot connect. Infection and shearing movement follow closely. Surgeons counter this with careful bleeding control, small slits in the graft to let fluid escape, and a firm bolster dressing.

What does a failed skin graft look like?

A graft that has died typically turns dark purple, then gray or black, becomes dry and shrunken, and may lift or separate from the edges. A partially failed graft shows a dark or raw island within otherwise pink tissue. Early bruising or a shedding surface layer can look similar and is not necessarily failure, so let your team judge.

What are the first signs a skin graft is not taking?

Early warning signs include a bolster or dressing that has shifted, a soft bulge of blood or fluid under the graft, a graft that looks wrinkled or lifted, deepening dark discoloration that does not pink up, and spreading redness or increasing pain around the edge. Report any of these the same day; early intervention can sometimes save part of a threatened graft.

What are the signs of skin graft infection?

Redness spreading beyond the wound edge, increasing warmth and swelling, pain that worsens after the first couple of days, cloudy or foul-smelling drainage, a yellow-green film on the graft, and fever or chills are the signals to report. A thin clear weep and a narrow pink band along the suture line in the first days are usually part of normal healing.

How long does it take for a skin graft to take?

The graft starts forming vessel connections with the wound bed around 36 hours after surgery according to MedlinePlus, and a working blood supply is usually established by about the end of the first week. Firm attachment continues to strengthen over the following two to three weeks, while color and texture keep changing for months as the graft matures.

Why do surgeons insist I stop smoking before a skin graft?

Nicotine narrows small blood vessels, and carbon monoxide from smoke reduces the oxygen the blood can carry, so the wound bed delivers less of what the graft needs to survive. Smoking also raises infection risk and slows donor-site healing. Vaping and nicotine replacement products also contain nicotine, so discuss any use with your surgeon rather than assuming they are exempt.

Can a skin graft fail after two weeks?

It is less common but possible. By two weeks a graft usually has its own blood supply, yet it remains weakly attached and easily damaged. A knock, friction from clothing, a fall, or a late infection can still lift or destroy part of it. This is why protection from rubbing, soaking and strenuous activity is typically advised for several weeks.

What happens if my skin graft doesn't take?

Dead tissue is removed and the wound is reassessed. Small areas of loss often heal on their own from the edges over a few weeks with dressings. Larger losses may need a second graft once the bed has recovered and any infection is treated, or occasionally a different reconstruction such as a local flap. Your team will also look for the cause before trying again.

References

• MedlinePlus Medical Encyclopedia: Skin graft
• Cleveland Clinic: Skin Graft
• NIH National Library of Medicine (StatPearls): Skin Grafting
• CDC: Surgical Site Infection Basics

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.