Wound Care After Mohs Surgery: The 14-Day Bleeding and Healing Playbook

Updated May 22, 2026 · Written by the AllaQuix® Team

Mohs surgery has the best cure rate of any skin cancer treatment — and the most demanding aftercare timeline of any in-office dermatology procedure. You leave with a wound that's been closed under tension, a pressure bandage your surgeon doesn't want you to touch for 48 hours, and a printed sheet of instructions that's clear enough until something happens that isn't on the sheet.

This guide is wound care after Mohs surgery, organized by what actually happens day by day, what's normal, what isn't, and how to handle the most common surprise — the wound starting to bleed again at hour 30 when you're trying to fall asleep.

The first 48 hours

  • Leave the original pressure bandage alone for 24–48 hours unless your surgeon told you otherwise. The bandage is doing two jobs: protecting the suture line and applying gentle pressure to keep any small bleeders quiet.
  • Keep the wound dry. No shower over the bandage, no swimming. A sponge bath or careful shower around the bandage is fine.
  • Limit head motion and bending if the wound is on the face, scalp, or neck. Vigorous bending raises local blood pressure and is the most common cause of late bleeding.
  • Sleep with your head elevated on two or three pillows for the first few nights if the wound is on your face or scalp. Reduces overnight swelling and bleeding.
  • Skip the heavy lifting, exercise, and alcohol for at least 48 hours. All three raise blood pressure and risk reopening a vessel that was just sealed.

What "normal" looks like at the wound site

Some bruising, some swelling, some yellow staining around the bandage edges — all normal. A small amount of pink-tinged drainage soaking through the gauze in the first 12 hours — also normal. Even a teaspoon of bright red blood that stops when you press the bandage firmly for 20 minutes is within the normal range and doesn't require a call.

What's not normal: continuous bright red bleeding that soaks through the bandage every few minutes, a wound that swells significantly larger than it was at closing, severe throbbing pain that's not responding to acetaminophen, or any sign of infection past 48 hours (warmth, redness expanding outward, pus, fever). Any of those — call your surgeon's office or the after-hours line.

What to do if it starts bleeding

The single most common Mohs aftercare surprise is the wound starting to bleed again hours after the surgery, often when the local anesthetic has fully worn off and a small vessel reopens. The major dermatology groups all converge on the same protocol:

  1. Sit down or lie back. Elevate the wound above heart level if possible (head of bed up, or arm raised).
  2. Apply firm, continuous pressure directly over the bandage with your hand or a clean cloth. Press harder than feels comfortable.
  3. Hold for 20 minutes by a clock, uninterrupted. Do not lift the bandage to check. Every check restarts the timeline.
  4. If after one full 20-minute round it's still bleeding, repeat for a second 20-minute round.
  5. If after two rounds — 40 minutes of correct pressure — it's still actively bleeding, call your surgeon's office or the after-hours number. Don't drive yourself if the bleeding is heavy.

That's the protocol. It works for the vast majority of post-Mohs late bleeds. The patients who end up in urgent care or the ER almost always didn't hold pressure long enough or peeled the bandage to look.

Hemostatic dressings in the home recovery kit

For minor secondary bleeding — the kind that responds to pressure but is taking longer than feels comfortable — a calcium alginate hemostatic dressing speeds the timeline considerably. Calcium alginate is the same material wound clinics use for slow-to-clot wounds; it absorbs up to 20 times its weight, gels in place, and accelerates clot formation without disturbing the suture line.

For Mohs patients specifically, the dermatology sample format pairs well with the surgeon's original closure dressing — slip a 2"x2" calcium alginate pad under the existing pressure bandage if a minor bleed starts, hold, and let it work. Do not remove your surgeon's original closure dressing to apply a new one.

Two formats that live well in the post-Mohs first-aid drawer:

If you're on a blood thinner, this becomes especially important — the late-bleed timeline is longer for thinner patients, and the standard pharmacy-aisle bandage is not designed for the wound surface a Mohs closure presents.

Day 2 onward — switching to clean dressing changes

At 24–48 hours, depending on your surgeon's instructions, you'll start gently cleaning the wound and changing the dressing daily. The American Academy of Dermatology and most surgical dermatology centers describe the same routine:

  1. Wash your hands.
  2. Gently remove the old dressing. If it's stuck, wet it with saline or clean water until it lifts off without pulling.
  3. Gently clean the wound with mild soap and warm water, then pat dry with a clean towel or gauze.
  4. Apply a thin layer of plain petroleum jelly (Vaseline) over the suture line. Do not use antibiotic ointments like Neosporin or Polysporin unless your surgeon specifically prescribed one — many dermatology offices now recommend plain petroleum jelly because the antibiotics in OTC ointments are a leading cause of contact allergies in surgical wounds.
  5. Cover with a fresh non-stick pad and secure with paper tape or a soft cohesive wrap.
  6. Once a day until your suture removal appointment, or as instructed.

Light bleeding during a dressing change in the first week is normal — pat with a clean pad, hold for a few minutes, proceed. Heavy bleeding follows the 20-minute-pressure protocol above.

The week of stitches removal

Most facial Mohs closures get stitches out at 5–7 days. Trunk and limb closures at 10–14 days. After stitches come out, the wound is still healing — the surface is closed but the deeper tissue continues to remodel for months. The aftercare instructions don't go away the day the stitches come out.

  • Keep the wound out of direct sun for 6 months. Use SPF 30+ over the scar daily, or cover with a hat / clothing.
  • Gentle massage of the scar starting 2–3 weeks post-op (after your surgeon clears it) helps soften and flatten the eventual scar.
  • Watch for unusual changes — significantly raised, red, itchy, or growing scars may need a follow-up.

When to call the office

  • Bright red bleeding that doesn't slow after 20 minutes of correct pressure.
  • Bleeding that restarts repeatedly even after stopping for hours.
  • Severe pain not relieved by acetaminophen, especially after the first 48 hours.
  • Expanding redness, warmth, pus, or fever after day 2 (early infection signs).
  • The wound edges visibly opening up.
  • Any change you're worried about — Mohs surgeons would rather hear from you and confirm you're fine than have you wait.

If your surgeon's office is closed and you can't get through to the on-call line, urgent care can manage most late bleeds with cautery. The emergency room is reserved for heavy bleeding that pressure isn't controlling.

Frequently asked questions

How long until the wound is "healed"?

Surface healing — the wound is closed and stitches are out — usually 1–2 weeks. Underlying tissue remodeling and final scar appearance — 6–12 months. Sun protection over the scar matters for the full first year.

Can I use a hemostatic bandage on top of the original pressure dressing?

Yes. If a late bleed starts and your surgeon's original closure dressing is still in place, add a calcium alginate pad on top, apply firm pressure, hold for 20 minutes. Do not remove the original dressing to apply something underneath.

I'm on a blood thinner and the wound keeps oozing. Is that a problem?

Mild oozing in the first 24–48 hours, especially on blood thinners, is common. Continuous bright red bleeding that needs pressure every few minutes is not — call your surgeon. If you're scheduled for Mohs and on an anticoagulant, your surgeon will have given you specific instructions about whether to pause the medication before surgery; follow those exactly.

Should I use antibiotic ointment on a Mohs wound?

Most modern Mohs surgeons recommend plain petroleum jelly rather than antibiotic ointments. The antibiotics in OTC ointments cause contact allergies in a meaningful percentage of patients, and plain petroleum jelly works just as well for keeping the wound surface moist while it heals. Follow your specific surgeon's instructions.

When can I shower normally?

Usually 24–48 hours after surgery, once the original pressure bandage is removed. Let warm water run over the wound — don't scrub. Pat dry, reapply petroleum jelly, redress.

Are AllaQuix® Derm dressings used in dermatology offices?

Yes — they're part of the Derm sample line developed specifically for dermatology procedures and home aftercare. Sterile, drug-free, hypoallergenic calcium alginate. Used by dermatology offices for in-office bleeding control and dispensed to patients for at-home use.

The bottom line. The first 48 hours after Mohs are about leaving the bandage alone and elevating. Days 2 through stitches-out are about gentle, daily cleaning, plain petroleum jelly, and a non-stick dressing. Late bleeds are managed with 20 minutes of uninterrupted pressure — a calcium alginate pad underneath if the bleed is taking longer than feels comfortable. Anything that doesn't fit those rules — call your surgeon.

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This article is informational and not a substitute for medical advice or your dermatology surgeon's specific post-operative instructions. AllaQuix® Derm dressings are sterile, drug-free calcium alginate intended for minor bleeding. Not for emergency or severe bleeding. Always follow your physician's aftercare instructions first.

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