How Long Does It Take for Stitches to Dissolve After Mohs Surgery?

Dissolvable stitches placed after Mohs surgery typically break down and disappear within one to six weeks when used on the skin surface, though the exact timeline depends heavily on the type of suture material your surgeon chose. Buried stitches placed in deeper tissue layers can take several months to fully absorb. The range is wide because Mohs closures often involve more than one layer of suturing, with different materials chosen for different jobs, and the rich blood supply of the face speeds things along compared to other body sites.

Why There Are Two Different Timelines

Most Mohs defects are closed in layers. The deeper layer uses buried absorbable sutures placed in the tissue beneath the skin surface, and these do the heavy structural work of holding the wound together while it heals. On top of that, your surgeon places surface sutures to align the skin edges precisely. In nasal tip repairs, for instance, surgeons commonly place 4-0 or 5-0 absorbable sutures deep in the tissue, then close the surface with finer 5-0 or 6-0 non-absorbable sutures that get removed at a follow-up visit.¹ This layered approach is standard for facial closures because it distributes tension across the wound and produces a better cosmetic result.

When people ask about dissolving stitches, they usually mean one of two things: the visible surface sutures that they can see and feel, or the buried sutures they know are somewhere underneath. The timelines for these are quite different, and understanding both helps you know what to expect in the weeks and months after your procedure.

Surface Suture Materials and How Quickly They Disappear

If your surgeon used absorbable sutures on the skin surface, the most common choice for facial Mohs closures is fast-absorbing gut suture. This material loses its tensile strength within about five to seven days and falls apart or falls off on its own within roughly ten to fourteen days. It is specifically engineered for areas like the face, where wounds heal quickly and prolonged suture support is unnecessary. A systematic review and meta-analysis of fast-absorbing gut sutures in dermatologic surgery found that complications were rare and included infection, wound separation, and hematomas at low rates.² The same analysis found these sutures were actually less likely to cause wound separation than tissue adhesive.

Another option gaining popularity is rapidly absorbable polyglactin 910, a synthetic material that dissolves over a slightly longer window, generally two to three weeks on the surface. A randomized clinical trial comparing this material to traditional nylon sutures on facial wounds found no difference in scar appearance at six months.³ That finding matters because it means your surgeon can choose a dissolving surface suture without sacrificing the cosmetic outcome, which also eliminates the need for a suture-removal appointment.

Not all surface sutures after Mohs are absorbable, though. Many surgeons still prefer non-absorbable nylon or polypropylene on the surface for precise wound-edge control, removing them at five to seven days on the face. If you have stitches that your surgeon told you need to come out at a scheduled visit, those are non-absorbable and will not dissolve on their own.

Buried Sutures Take Much Longer

The deep, buried absorbable sutures are the ones with the longer timeline, and they are also the ones you cannot see. These sutures sit beneath the skin surface and hold the deeper tissue layers together while collagen remodeling strengthens the wound over months. Common materials for this layer include polyglactin 910 (often known by the brand name Vicryl), poliglecaprone 25, and polydioxanone (PDS).

Standard polyglactin 910 retains its strength for about three to four weeks and is substantially absorbed by around two to three months. Poliglecaprone 25 loses strength faster, within about two weeks, but the material itself takes roughly three to four months to fully disappear. Polydioxanone is the slowest of the group. Research on PDS suture fibers found that they exhibited an absorption delay of about 120 days, meaning the material stayed structurally present for roughly four months before the body broke it down completely.⁴ PDS is chosen specifically when long-lasting support is needed, such as in closures under significant tension.

For large or complex Mohs defects, some surgeons use barbed absorbable sutures made of polydioxanone. These self-anchoring sutures grip the tissue along their length without needing knots, which distributes tension more evenly. The polydioxanone material in these barbed sutures provides a long tissue-holding time, which is why it is selected for wounds where the edges are under significant mechanical stress.⁵ Even these dissolve eventually, but you may feel them under the skin for several months.

Why the Face Dissolves Stitches Faster Than Other Sites

Mohs surgery is most commonly performed on the face, and this matters for dissolution speed. The face has an exceptionally rich blood supply compared to most other body regions, which accelerates both wound healing and the biological processes that break down suture material. Wounds of the face and oral cavity heal faster than wounds elsewhere in the body specifically because of this vascular advantage.⁶

Absorbable sutures are broken down by one of two mechanisms depending on the material. Natural materials like gut suture are digested by enzymes in the tissue, a process called proteolysis. Synthetic materials like polyglactin and polydioxanone are broken down by water molecules slowly cleaving the polymer chains, a process called hydrolysis. The enzymatic route tends to be faster and somewhat less predictable, which is one reason gut sutures disappear quickly but can vary in their exact timeline from person to person. The face’s robust blood supply brings more immune cells and enzymes to the area, which speeds up the enzymatic process for gut sutures and also creates a warmer, more metabolically active environment that can modestly accelerate hydrolysis of synthetic materials too.

For Mohs procedures done on the trunk or extremities, expect dissolution timelines at the longer end of each material’s range. A fast-absorbing gut suture on the shin, for example, may hang on for a few days longer than the same suture on the cheek.

Spitting Sutures and What to Do About Them

One of the more common and alarming surprises after Mohs surgery is a “spitting suture,” where a buried stitch works its way up through the skin surface weeks or even months after the procedure. This happens because the body sometimes pushes foreign material outward as part of the inflammatory response rather than absorbing it in place. You might notice a small bump, a tiny spot of drainage, or an actual thread poking through the skin.

Spitting sutures are not a sign that anything went wrong with your surgery. They are especially common with braided suture materials and with thicker-gauge sutures used in areas under tension. The stitch is already partially degraded by the time it surfaces, and in many cases you can leave it alone and it will fall out or be absorbed shortly. If it bothers you or seems irritated, your surgeon can snip the exposed end in the office in about thirty seconds. The important thing is to distinguish a spitting suture from an actual wound infection. A spitting suture typically produces a localized bump with minimal surrounding redness. An infection tends to involve spreading redness, warmth, increasing pain, and sometimes fever. When in doubt, call your surgeon’s office.

Do Absorbable Sutures Produce Worse Scars?

This is one of the most common concerns patients raise, and the short answer is no. A systematic review and meta-analysis examining whether absorbable or non-absorbable sutures produce better cosmetic outcomes in facial wound closures found no significant difference in any measure they analyzed, including scar appearance, patient satisfaction, infection rates, wound separation, or stitch marks.⁷ Most of the authors in the included studies noted a preference for absorbable sutures, largely because they eliminate the need for a return visit to have stitches removed.

A separate randomized trial comparing rapidly absorbable polyglactin 910 to nylon on the face confirmed this, finding equivalent photographic scar scores at six months.³ Similarly, fast-absorbing gut suture performed comparably to tissue adhesive for cosmetic outcomes in linear repairs after Mohs surgery, with blinded evaluators slightly favoring the gut suture, though the difference was not statistically significant.⁸

The practical takeaway is that you should not worry if your surgeon used dissolving stitches instead of removable ones. What matters far more for your final scar is the technique of the closure, how well the wound edges were aligned, whether there was excessive tension, and how you care for the wound during the first few weeks.

What You Can Do to Help the Process Along

You cannot meaningfully speed up suture dissolution, nor would you want to. The sutures are designed to maintain their strength during the critical early healing window and then gradually lose it as your own tissue takes over. Trying to dissolve them faster, whether by picking at them, applying hydrogen peroxide, or soaking the wound, risks disrupting the healing process and worsening your scar.

What you can do is support healing so the wound is strong enough to hold itself together by the time the sutures lose their grip. Keep the wound clean and follow your surgeon’s specific instructions about wound care, which typically involve gentle cleaning and keeping the site protected. Avoid strenuous activity that puts tension on the closure for the time frame your surgeon specifies, usually one to two weeks for facial wounds. Sun protection matters too: ultraviolet exposure on a fresh scar can cause permanent darkening, so keeping the area covered or using sunscreen once the wound has closed is worth the effort for months afterward.

Smoking significantly impairs wound healing by reducing blood flow to the tissue, and this can slow both the healing process and the body’s ability to break down suture material. If you smoke, this is one more reason to discuss it with your surgeon before the procedure.

When to Call Your Surgeon

Most of the time, dissolving stitches after Mohs surgery are a non-event. They do their job quietly and disappear without you noticing. But a few situations warrant a call to your surgeon’s office:

• Suture still intact after the expected window: If your surgeon told you the surface stitches would dissolve in ten to fourteen days and they are still firmly in place at three weeks, let them know. Sometimes a stitch needs a little help being removed even if it is technically absorbable.
• Wound opening: If the wound edges start to separate, even slightly, contact your surgeon. Early intervention can prevent a wider gap and a worse scar.
• Signs of infection: Increasing redness that spreads beyond the wound edges, worsening pain after the first few days, warmth, pus, or fever all warrant a prompt call.
• Persistent bump or drainage: A small bump that develops weeks later along the suture line is often a spitting suture, but it can sometimes be confused with an early infection or a suture abscess. Your surgeon can tell the difference quickly with a visual exam.

Many Mohs surgeons schedule a follow-up visit at one to two weeks regardless of suture type, partly to check healing and partly to remove any non-absorbable surface sutures. If you are unsure whether your surface stitches are the dissolving kind, that follow-up is the time to ask. Your operative report or discharge instructions should also specify the suture material used, which you can look up or ask about at your next visit.

Why Your Surgeon Might Choose One Material Over Another

Surgeons do not pick suture materials randomly. The choice is a tradeoff between how long the wound needs support, how much tension exists at the closure, how important it is to avoid a return visit, and the specific body site. For a small Mohs defect on the nose closed under minimal tension, a fast-absorbing gut suture on the surface and a poliglecaprone 25 buried suture is a common, low-fuss combination. For a larger defect involving a flap or graft, the surgeon may reach for polydioxanone in the deep layer for its extended holding time and use non-absorbable nylon on the surface for maximum control over wound-edge positioning.

Patient factors matter too. Someone who lives far from the surgeon’s office and would struggle to return for suture removal is a good candidate for absorbable surface sutures. Someone on blood thinners or immunosuppressive medications might benefit from a suture material with a longer strength profile to compensate for slower healing. Elderly patients and those with diabetes tend to heal more slowly, and the surgeon factors this into the material choice. These decisions happen behind the scenes, and your surgeon has already weighed these tradeoffs by the time you are in the chair. If you are curious about what was used and why, asking is always reasonable.