As we explained in last week’s article, the virus that causes warts (HPV) doesn’t travel through the bloodstream. Instead, it burrows down in the outer layers of the skin, where it can avoid detection by your immune system and resist treatment. That’s why warts are so persistent—and why clearing them usually takes more than one attempt.

Most treatment options follow one of two paths: they either destroy the infected tissue or prompt your immune system to attack the virus locally. Some treatments take a two-pronged approach for particularly stubborn warts. But even under the best conditions, warts often require several weeks of consistent treatment, and they don’t always respond to the first thing you try. Recurrence is also common because even after the visible wart resolves, the virus can remain in nearby skin and flare up again if your immune system never mounts a full response.

If you’ve been cycling through remedies without success, the problem may be that the treatment doesn’t match the type or location of the wart. We’ll walk through both over-the-counter and in-office options, so you have a better chance of finally getting rid of the unwanted bump.

Over-the-Counter Options

For small, uncomplicated warts, starting with an OTC option is a great first-line treatment option. These products don’t work quickly, but when used consistently—usually for 8 to 12 weeks—they can gradually break down the wart or trigger a mild immune response. If you don’t see progress after that, it’s time to switch methods or seek professional treatment.

Salicylic Acid

Best for: Superficial common and plantar warts, especially on hands, fingers, or heels.

Salicylic acid helps in two ways. First, it softens and dissolves the dead skin that makes up the bulk of the wart. As that surface breaks down, it exposes virus-infected cells that were previously buried under callus. Second, by clearing away those layers, it puts the infection closer to areas of the skin where immune cells are more active—especially near the base of the epidermis. That’s what gives your body a better shot at recognizing and responding to the virus.

You can speed up the process by soaking the area first, then gently debriding the surface with a file or pumice stone. These small abrasions allow the medication to penetrate more effectively and reach deeper into the wart.

Freezing Sprays (OTC Cryotherapy)

Best for: Small, superficial warts in areas with thicker skin, such as the fingers or toes.

Unlike in-office cryotherapy, which uses liquid nitrogen to flash-freeze tissue to extreme temperatures, the at-home version relies on a milder mix of dimethyl ether and propane. These compounds can chill the surface enough to cause mild blistering, but they rarely reach the depth or intensity needed to fully destroy a well-established wart.

Results depend heavily on how the product is applied. You need firm, direct pressure and enough contact time—typically 20 to 40 seconds—to freeze through the wart tissue. Many people undershoot the timing or apply the spray at an angle, which limits its effect. In shallow warts that haven’t built up much callus, a partial freeze might be enough to trigger a localized immune response.

In-Office Treatments

Dermatologists can offer treatments that go beyond what’s available at home, including more potent topical medications and in-office procedures that require specialized medical training. They also bring the benefit of experience, which means they can often identify the most effective option without the trial-and-error most people go through on their own.

Cryotherapy

Best for: Thick, persistent warts—especially on the hands or feet—where over-the-counter methods haven’t worked.

One of the first options your dermatologist will consider is cryotherapy, during which they’ll apply liquid nitrogen to the lesion using a metal probe or a precision dropper. The nitrogen, which has a temperature around –321°F, instantly freezes the wart on contact, causing ice crystals to form inside the skin cells. These crystals can penetrate cellular membranes, leading to tissue destruction within the skin cells that harbor the virus.

Just like with a chemical peel, this is a controlled injury—something your provider uses intentionally to trigger localized inflammation. Once your immune system detects that inflammatory signal, it moves in to repair the tissue and, in the process, begins targeting the virus. Cryotherapy also causes the callused skin to blister and separate, which helps lift infected tissue and exposes any remaining wart cells to further treatment or immune attack.

Cantharidin 

Best for: Warts where freezing or scraping could be too painful.

Cantharidin is a blistering agent that your provider applies directly to the wart and then covers with tape. The medication soaks in over several hours, eventually producing a targeted reaction. As the skin beneath the wart begins to blister, the dead tissue separates from the healthy skin underneath and peels away gradually over the next several days.

Unlike freezing or burning, this method doesn’t require local anesthesia, is not painful to apply, making it a popular treatment for children. Most warts require more than one round of treatment, but in the right case, cantharidin is a low-discomfort option with minimal downtime.

Electrosurgery & Curettage

Best for: Isolated, thick, raised or treatment-resistant warts that haven’t responded to non-invasive methods.

When a wart is particularly thick, stubborn, or hasn’t responded to multiple rounds of other treatments, physical removal may be the most efficient option. Your provider will numb the area with local anesthetic, then use a sharp curette to scrape out the wart down to its base. After that, they’ll apply a targeted electrical current to cauterize the tissue and destroy any remaining viral cells. The heat also helps seal blood vessels and reduce bleeding.

One thing to bear in mind is that you’ll have some downtime for healing. 

Laser Therapy

Best for: Deep warts that haven’t responded to traditional treatments.

Lasers do not directly attack the wart tissue. Instead, they target the tiny blood vessels feeding it, causing the vessels to collapse. Once the wart is cut off from your body’s circulatory system, this tissue gradually dies. That vascular damage also triggers inflammation, which can help your immune system recognize the virus. 

Your provider will select the laser type based on the location of the wart and the depth of penetration required.

Pulsed-dye lasers (PDL) deliver short bursts of light that target hemoglobin—the pigment in red blood cells—without damaging surrounding skin. This makes them a good option for shallow or delicate areas where precision matters. They’re often used for common warts that haven’t responded to topicals.

Immunotherapy

Best for: Warts that keep coming back or don’t respond to destructive treatments.

Some warts persist despite multiple rounds of destructive treatments because the immune system never gets fully involved. Immunotherapy lets your dermatologist “train” your immune system to do the work itself. One of the most common methods involves injecting a small amount of Candida antigen directly into the wart. Candida is a type of yeast that lives on the skin and in the body, and because most people have already been exposed to it, their immune system knows how to respond. The injection doesn’t cause an infection, but it does kick the immune system into gear. This inflammatory response may also trigger recognition of the HPV virus that is hiding in the surrounding tissue.

Topical versions, such as imiquimod, are similar in that they stimulate immune activity, but they increase cytokine production rather than provoking it through injury. These chemical messengers act as distress signals that alert your immune system something’s wrong. Once those immune cells arrive, they will hopefully recognize and start destroying the viral cells, along with any other unwanted microbial guests. 

Prevention Tips to Avoid Reinfection

Warts can come back even after they’ve cleared, especially if the surrounding skin still carries traces of the virus. Taking a few simple steps can help reduce the risk of recurrence and prevent new infections from spreading:

  • Keep your skin barrier intact to prevent cracks where the virus can enter. Use moisturizers with ceramides, like CeraVe’s SA Cream for Rough & Bumpy Skin, to replenish the essential lipids that keep your skin healthy.
  • Avoid picking, scratching, or shaving over warts. Broken skin makes it easier for the virus to spread, and you can accidentally cause more warts on other parts of your body. 
  • If you need to use communal areas, always wear sandals or swimming shoes. HPV loves warm, wet environments. 
  • Just as you would with antibiotics, you need to finish your treatment. Stopping early can cause the wart to reappear because there’s a chance there’s still infected tissue.
  • Wash your hands after touching a wart to apply medicine or handle tools like pumice stones.

If you’ve been dealing with the same wart for months—or if a new bump doesn’t look or behave like the others—we encourage you to reach out to schedule an appointment with Dr. Elizabeth Briden, especially if a lesion has changed significantly since your last annual skin exam.

Some early skin cancers can resemble warts, especially squamous cell or certain basal cell carcinomas. When detected early, most non-melanoma skin cancers have a five-year survival rate over 99%, so the earlier your doctor catches it, the better your outcome.