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After your biopsy

Looking After the Dressing — and Wound

Going home with a dressing and no written instructions is more common than it should be. This page covers the three things that worry people most: when the dressing comes off, whether it can get wet, and what to do if it falls off before you are ready.

Medically reviewed by Dr. Mohammed Imaduddin, Surgical Oncologist, MBBS · MS (General Surgery) · M.Ch (Surgical Oncology) · Last reviewed September 2026

  • Leave it undisturbed — The dressing works by staying in place. Lifting the edges to check the wound underneath slows healing.
  • Keep it dry at first — Water near a fresh biopsy wound raises the chance of infection. Shower around it, not over it.
  • Falling off is manageable — A clean dry plaster covers most early falls. Call your team to confirm nothing else is needed.
  • Know when to call — Spreading redness, fever, or bleeding that will not slow down means call the same day.
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Your biopsy dressing protects the wound while the skin seals underneath. Keep it dry for the first day or two. Your team's discharge instructions say when it should come off — usually within a few days. If it falls off early and the wound looks clean and closed, cover it with a clean dry plaster and let your team know.

How do you look after a biopsy dressing at home?

Leave the dressing alone and let it do its job. The wound is sealed underneath, and lifting the edges to look sets back the healing process.

Do not apply cream, antiseptic, or any product to the dressing or the wound site unless your team has specifically told you to. The area needs to stay clean and dry, not treated.

Some bruising around the site and mild tenderness for the first day or two is normal. The dressing may look slightly damp at first — that is the natural fluid the skin produces as it seals.

How can you wash without getting the dressing wet?

  1. First day or two

    Keep the dressing completely dry. Shower around it rather than over it. Hold a dry cloth against the area if water might splash.

  2. If you need to wash nearby

    Place a waterproof cover over the dressing before you shower. Your pharmacy will stock purpose-made waterproof wound covers, or you can use a similar protective layer.

  3. When the dressing comes off

    Your team will tell you when it is safe to remove it. Do not take it off before then, even if the wound looks healed on the surface — the skin underneath may still be knitting.

  4. Washing once the dressing is off

    Rinse the healed area gently with cool running water. Do not use soap directly on the wound site unless your team has said to. Pat dry with a clean cloth — never rub.

What if the dressing falls off before you are meant to remove it?

Cover the wound with a clean dry plaster and let your team know the same day.

If the skin underneath looks closed, clean, and dry, a plaster will protect it while you wait for advice. Most small biopsy wounds are well on their way to sealing within the first couple of days.

If the wound looks open, or you see fresh bleeding that will not slow with gentle pressure for a few minutes, call your team today rather than waiting for your next scheduled appointment.

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What to check each day while the wound heals

  • The dressing is still flat, dry at the edges, and in place
  • No spreading redness reaching beyond the edge of the dressing
  • No increasing swelling or warmth around the site
  • No discharge with a smell or unusual colour
  • Call your team today if redness, swelling, or pain is getting worse rather than better
  • Go to hospital if bleeding will not stop with gentle pressure, or you feel unwell with fever and pain at the biopsy site

Questions about your biopsy dressing

Does the timing depend on where the biopsy was taken?

Yes. A biopsy taken from a site that moves often — the back of the arm, the neck, the chest — may need to stay covered for longer than one from an area that stays still. The skin over a joint or a muscle you use every day is under more stress as it heals. Your team's instruction about timing is specific to your site, your wound, and your skin, which is why a general answer is less useful than the guidance you were given.

What does normal healing look like day by day?

In the first day or two, some pinkness and mild tenderness around the site is expected. Any bruising usually looks its worst around day two or three before it fades. By the time the dressing comes off, the skin should look closed and dry. Some people notice a small raised line or a slight firmness in the skin — this is the early scar forming and is not a sign that something has gone wrong. Itching under the dressing is also common as the skin repairs itself.

Is it safe to put cream or ointment on the wound to help it heal?

Do not apply any cream, ointment, antiseptic, or home remedy to the biopsy wound unless your treating team has told you to. Some products that seem helpful can actually slow the skin from sealing, cause a reaction in healing tissue, or make it harder to assess the wound if you need to be reviewed. If you were given a specific wound care product to use, follow those instructions. If you were not, leave the wound clean and dry.

When can you go back to exercise and normal activity?

Light daily activity is usually fine from the start, but anything that stretches, strains, or causes sweating over the wound site is best avoided until the dressing comes off and the skin looks healed. Swimming should wait until your team gives the go-ahead, because immersion in water — pool or natural — raises the risk of infection while the wound is still fresh. If you are unsure whether a specific activity is safe, ask your team rather than guessing.

Did you know?

Skin heals from the inside out. The surface may look closed and dry while the deeper layers are still repairing — which is why care instructions apply even when the wound looks fine.

Following the full dressing and washing guidance, even when it seems unnecessary, is what reduces the chance of the wound reopening or becoming infected.

Source: World Health Organization guidance on wound care and infection prevention

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Common questions

Frequently asked questions

When should I take the biopsy dressing off?

Follow the timing your team gave you — that instruction is specific to your wound, your skin, and where the biopsy was taken. If you were not given a clear timeframe, call and ask rather than guessing. Taking the dressing off too early can reopen skin that has not yet fully sealed, while leaving it on too long can soften the skin beneath. If the dressing is uncomfortable or causing a rash, call your team before removing it yourself.

Can I have a bath instead of a shower while the dressing is on?

Avoid bathing until the dressing has come off and your team confirms the wound is healed. Lying in water — even briefly — saturates the dressing, softens the healing skin, and raises the chance of infection. A shower where you can direct the water away from the site is much safer. If you cannot stand for a shower, ask your team about the safest way to wash around the wound until it is fully healed.

There is a small amount of blood on the dressing — is that normal?

A small spot of blood or slightly pink fluid on the dressing in the first day is common and not usually a concern. What you are watching for is an increase — a spot that grows larger, soaks through the dressing, or is accompanied by pain or swelling that is getting worse rather than better. If the blood stain is spreading, apply gentle pressure with a clean cloth and call your team the same day. Do not remove the dressing to look underneath.

The skin around the dressing is itchy — what should I do?

Itching around a healing wound is very common and usually means the skin is repairing itself. Do not scratch the area or push under the edges of the dressing to reach it. If the itching is severe, or if you notice a rash, redness, or blistering around the dressing edges, you may be reacting to the dressing material. Call your team to ask whether it needs to be changed to a different type. Do not remove it yourself without checking first.

Do I need to come back to the clinic for the dressing to be removed?

Some dressings need to be removed by a nurse or doctor, particularly if they were applied over a larger wound or a sutured site. Others can be removed at home following simple instructions. Your discharge paperwork should say which applies to you. If you are not sure, call your team's number before removing anything yourself. Some clinics also offer a wound check appointment a few days after the procedure — ask whether this applies to your biopsy.

Full index

Browse all 701 biopsy topics

Every page in this section, grouped by the part of the journey it belongs to. Pick a group to see what is in it.

What Is a Biopsy?

What Is a Biopsy? Everything You Need to Know →

Types of Biopsy Compared

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Preparing for a Biopsy

What to Expect on the Day of Your Biopsy →

Recovery and Aftercare

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Biopsy by Body Part

Biopsy by Body Part: What to Expect at Each Site →

Understanding Your Report

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IHC and Molecular Markers

IHC and Molecular Markers on a Biopsy: What They Mean →

Grading and Scoring Systems

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How Accurate Is a Biopsy?

How Accurate Is a Biopsy? Errors and Second Opinions →

If Your Result Is Benign

Your Biopsy Is Benign: What It Means and What Comes Next →

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