Warts and Molluscum Post-Procedure Care & FAQs
Aftercare Instructions for Liquid Nitrogen, Canthacur, and Candida Antigen Treatment
Recovering from wart and molluscum treatments is generally straightforward, but proper aftercare is essential to ensure the best results and minimize the risk of infection. At DermWellesley, we use three primary methods to treat these common viral skin conditions: Liquid Nitrogen (Cryotherapy), Canthacur (aka Beetle Juice), and Candida Antigen Injections.
Because warts and molluscum can be stubborn, they often require multiple treatments despite best efforts. Below, you will find detailed explanations of how each treatment works, what to expect during recovery, and how to care for your skin at home. Remember, everyone heals differently, and it’s always best to consult one of our board-certified dermatologists at DermWellesley for any follow-up questions or concerns.
Table of Contents
Overview of Warts and Molluscum Treatments
Liquid nitrogen is used to “freeze” or destroy the viral wart or molluscum cells. By applying extreme cold (approximately -320°F), we induce thermal shock, causing the treated cells to die and eventually slough off, and are replaced by healthy, virus-free skin.
Canthacur is a topical blistering agent derived from an actual beetle- the blister beetle. When applied to a wart or molluscum lesion, it causes the skin underneath to blister. This then triggers an immune response as the area heals, which, in turn, helps to eradicate the virus.
This is an immunotherapy treatment that we use off-label (it is not FDA-approved for this purpose). We inject a small amount of Candida antigen (a yeast protein) directly into the wart. This doesn’t just attack the specific wart injected; it stimulates your body’s immune system to recognize and fight the virus (HPV) systemically, with the hope that it clears both the wart(s) where it was injected and those on other parts of the body as well.
Aftercare and Recovery with Liquid Nitrogen (Cryotherapy)
- Sensation: It’s normal to feel stinging, burning, or throbbing at the treated area for a few hours after leaving the office. Redness and swelling are typical and may develop soon after treatment.
- Color Changes: The skin may appear white or pale immediately after application due to the extreme cold. This usually fades within minutes.
- Initial Blistering: A blister or scab may begin to form within the first 24 hours; this is a desired effect of the treatment.
Most patients develop a blister or a scab within the first 24–48 hours. Clear or blood-filled blisters are both normal reactions. DO NOT pick at the blister or scab or remove the top of the blister.
Clean the area gently once daily with mild soap and water. Avoid scrubbing or using harsh cleansers.
Yes, you may shower or bathe normally. Just gently pat the area dry after getting it wet.
Small lesions usually heal within 1–2 weeks; areas on the hands, feet, or legs may take longer, sometimes up to 3–4 weeks.
The scab forms after the blister dries. It will gradually peel off as new skin grows. Do not pick at it, this helps avoid scarring.
No, do not intentionally pop blisters. If a blister pops on its own, gently clean the area, apply Vaseline or Aquaphor, and cover it with a bandage if it is at risk of infection.
Aftercare and Recovery with Canthacur
Canthacur is painless when applied, but tenderness usually develops later as the blister forms.
Crucial Step: You must wash the treated area with soap and water 4 hours after application (unless your physician instructed you otherwise). Leaving the medication on too long can cause excessive blistering and irritation.
- Blistering: Expect a blister to form; this is the goal of the treatment. It may appear the same day or the following day.
- Managing Discomfort: If the blister becomes large or painful, you can protect it with a specialized blister Band-Aid or a donut-shaped corn pad from your local pharmacy.
- Do Not Pick: As with cryotherapy, do not remove the top of the blister. If it pops naturally, keep it clean and covered with antibiotic ointment or Vaseline
Yes! Blistering is expected. It means the medication is working.
If you accidentally leave Canthacur on longer than advised, you may see more blistering or irritation. Gently wash it off as soon as you remember and monitor the skin. If blistering is extreme or very painful, contact our office.
Do not pop or pick at blisters or scabs. Keep the area clean and protected with Vaseline, Aquaphor, or a bandage if needed. Let blisters resolve naturally.
Blisters typically dry out and scab over in a few days. Complete healing usually takes 1 to 2 weeks, but thicker warts may take longer.
Call us if you notice spreading redness, pus, fever, significant pain, or if you have concerns about how the area looks or feels.
Aftercare and Recovery with Candida Antigen Injection
Most patients can resume normal activities immediately. You might feel a little pressure or stinging during the injection, but this fades quickly.
- Itching & Redness: It is normal to experience itching, redness, or mild swelling at the injection site. This indicates your immune system is responding.
- Skin Changes: Occasionally, the injected wart may turn black and crust over before falling off.
- Rare Side Effects:
- Hives: Very rarely, generalized hives may occur. If this happens, take an over-the-counter antihistamine (like Benadryl or Zyrtec) and call our office.
- Flu-like Symptoms: Some patients report feeling achy or tired, similar to a mild flu. This usually resolves quickly.
- Significant Swelling: Although incredibly unlikely, significant swelling or color change in the fingers or hands requires immediate medical attention. Call our office right away if this occurs.
Yes, many patients see the injected wart darken, crust, or even turn black before ultimately falling off. This process may take several days to weeks.
It is less common to develop a blister, but mild blistering or slight oozing at the site can sometimes occur and is a normal response.
Keep the area clean with gentle washing using soap and water. You can pat it dry and apply Vaseline or Aquaphor if the skin seems dry or irritated. There is usually no need to cover the spot unless it is draining or rubbing against clothing.
Yes, most people resume regular activities the same day. Shower or bathe as usual, but avoid friction or heavy sweating if the area feels sore for the first day or two.
The wart may begin to shrink or fall off within a few weeks, but full effects can take several weeks to become obvious. Recurrences are possible, and sometimes more than one injection is needed for stubborn warts.
Mild flu like symptoms (fatigue, body aches), itching, or minor swelling are possible and typically resolve quickly. Rarely, a rash, hives, or more serious swelling may appear. If you notice spreading redness, severe discomfort, or other concerning reactions, call our office promptly.
Yes, this treatment works via your immune system. Often, other similar warts begin to resolve as well, even if they were not injected directly.
Call us if you notice signs of infection (pus, spreading redness), prolonged pain or swelling, severe flu-like symptoms, or if you are worried about the healing process at any point.
Wart & Molluscum Treatment: Recovery FAQs
Every patient heals differently. Small lesions may clear up in 1-2 weeks, while larger, deeper warts on the feet or hands may take several weeks to fully resolve.
Yes. Warts and molluscum are resilient viral infections. It is very common to require multiple sessions spaced 3-4 weeks apart to achieve complete clearance.
Instructions for All Patients: If your provider recommends it, you may begin home therapy with The Wart Stick (available online or at pharmacies) once the tenderness from your office visit has subsided. Apply the stick to the remaining wart, cover with a Band-Aid, and leave it on for the day. Remove it in the shower and gently file the dead skin with a pumice stone or nail file. Repeat daily until your follow-up.
Have Questions About Your Wart Treatment?
Contact DermWellesley with Your Post-Treatment Questions
Warts and molluscum can be frustrating, but you don’t have to deal with them alone. If you have concerns about your healing process or notice signs of infection, such as spreading redness, pus, or severe pain, please contact us immediately.
Our board-certified dermatologists are the leading experts in Molluscum contagiosum treatment and Wart Removal in Wellesley. We are dedicated to helping you achieve clear, healthy skin. Call DermWellesley at 781-591-4234 or schedule an appointment online.