Warts are removed by destroying the infected skin cells, cutting off the wart’s blood supply, or triggering an immune response that fights the virus causing them. The right method depends on the wart’s size, location, and how long you’ve had it. Most people start with over-the-counter options and move to professional treatments if those don’t work within a few months.
Salicylic Acid: The Most Common Starting Point
Over-the-counter salicylic acid is the first treatment most people try. It works by dissolving the thick layers of skin that make up the wart, peeling away virus-infected cells bit by bit. Products come in liquids, gels, and adhesive pads, typically at concentrations between 17% and 40%. Stronger formulations (up to 27.5%) are available without a prescription for stubborn warts.
The process is slow and requires consistency. You soak the wart in warm water for about five minutes, apply the product, and repeat daily. Most warts need 4 to 12 weeks of daily treatment before they’re gone. Filing down dead skin between applications with a pumice stone or emery board speeds things up. The most common side effects are mild stinging and skin irritation around the wart. Keeping the acid on only the wart itself, not the surrounding healthy skin, reduces irritation significantly.
Freezing at the Doctor’s Office
Cryotherapy with liquid nitrogen is the most widely used professional treatment. A doctor applies liquid nitrogen directly to the wart, freezing it at temperatures far colder than any home product can reach. The frozen tissue dies, and a blister forms underneath that lifts the wart away from healthy skin as it heals. Cryotherapy for warts has a cure rate between 60% and 86%.
Most people need about three sessions, spaced roughly a month apart. Each session involves freezing the wart for 10 to 60 seconds, sometimes with two freeze-thaw cycles. Plantar warts on the soles of the feet tend to need the longest course of treatment because the thick skin there protects the wart. The procedure stings during freezing and can be sore for a day or two afterward. A blood blister often forms and falls off within one to two weeks.
Over-the-Counter Freeze Products
Drugstore freeze sprays use a mixture of dimethyl ether and propane instead of liquid nitrogen. These products don’t get nearly as cold. When tested in lab conditions, some branded freeze sprays didn’t even reach temperatures colder than ice water when used according to package directions. The liquid form of the chemical itself does get much colder and can freeze tissue comparably to liquid nitrogen, but the applicator tips included in home kits limit how much cold actually reaches the wart. These products can work for small, superficial warts, but they’re significantly less effective than what a doctor uses.
Blistering Agents Applied in a Clinic
Cantharidin is a blistering agent that a doctor or nurse applies directly to the wart during an office visit. The liquid is painted on and allowed to dry for up to five minutes. You leave it on for 24 hours before washing the area with soap and water. Over the next few days, a blister forms beneath the wart and separates it from the skin underneath.
Treatments are repeated every three weeks as needed. The area shouldn’t be bandaged unless your doctor specifically tells you to, and you need to avoid touching your eyes, mouth, or genital area after application. Cantharidin is painless at the time of application, which makes it a popular choice for children, though the blister that forms later can be uncomfortable.
Burning and Scraping the Wart Away
For warts that resist other treatments, doctors sometimes use electrocautery, which burns the wart with an electrical current, often combined with curettage (scraping). The area is numbed with a local anesthetic first, and a grounding pad is placed on your body for safety. The doctor uses a heated instrument to destroy the wart tissue, then scrapes away the remains.
Healing takes a few weeks. During that time, the treated spot will likely be sore, itchy, or swollen for several days, and over-the-counter pain relievers are usually enough to manage discomfort. The skin in the treated area may temporarily become lighter or darker and can be sensitive to sun for a few months. Picking or scratching the wound slows healing and increases the chance of scarring. Signs to watch for include pain that doesn’t improve after a few days, fever, or skin that oozes pus, which could signal infection.
Laser Treatment for Stubborn Warts
Pulsed dye lasers target the tiny blood vessels feeding the wart. The laser heats those vessels, cutting off the wart’s blood supply. This also appears to activate the immune system against the virus. Laser treatment is typically reserved for warts that haven’t responded to other methods. In a review of patients treated with pulsed dye laser, about 58% achieved more than 50% clearance, while roughly 12% saw complete clearance. Multiple sessions are usually needed, and the cost is higher than other options since laser treatment often isn’t covered by insurance for wart removal.
Immunotherapy: Training Your Immune System
One of the more interesting approaches involves injecting a substance into the wart that provokes a strong immune response. Doctors commonly use an extract from Candida yeast, which most people’s immune systems already recognize. The injection triggers immune cells to flood the area, and in the process, those cells also attack the virus-infected skin.
What makes this approach unique is its effect on distant warts. A meta-analysis found that injecting a single wart led to significant clearance of untreated warts elsewhere on the body, something no other removal method reliably does. The treatment performed about five times better than placebo injections for complete clearance. It’s particularly useful for people with multiple warts, since treating each one individually would be impractical.
Duct Tape Occlusion
Covering a wart with duct tape is one of those home remedies that has actually been studied in clinical trials, with mixed results. A widely cited 2002 study found that 85% of warts resolved with duct tape compared to 60% with cryotherapy in patients under 22. But follow-up studies were less encouraging. A 2006 trial in schoolchildren found only 16% clearance after six weeks, and a 2007 study in adults found 21% clearance with duct tape, essentially the same as the placebo group.
A later study using super glue underneath the duct tape had better results, with 80% clearance. This suggests the strength of the adhesive seal matters. The idea is that completely sealing the wart from air may irritate the skin just enough to draw immune attention to the virus. It’s cheap and painless, so it’s reasonable to try, but the evidence isn’t strong enough to rely on it as a primary treatment.
Why Warts Come Back
Recurrence is the most frustrating part of wart treatment. Even after successful removal, about 30% to 35% of warts come back, with at least 20% of recurrences happening within the first 12 weeks. This happens because most removal methods destroy the visible wart but don’t eliminate every virus particle in the surrounding skin. If the immune system doesn’t fully clear the infection, the virus can re-establish itself.
Your immune system is ultimately what determines whether a wart stays gone. People with weakened immune systems have higher recurrence rates and often need more aggressive or repeated treatment. This is also why warts sometimes disappear on their own without any treatment at all: the immune system eventually recognizes and clears the virus. In children, spontaneous resolution is especially common, with many warts disappearing within two years.
Choosing the Right Approach
For a single, small wart on your hand or finger, starting with daily salicylic acid for 8 to 12 weeks is reasonable. If that doesn’t work, cryotherapy at a doctor’s office is the logical next step. Plantar warts on the feet are harder to treat because of thick overlying skin, and they often need professional freezing or a combination approach. Flat warts on the face require gentler methods since aggressive treatments risk scarring in visible areas.
Multiple warts scattered across different areas may respond best to immunotherapy injections, since clearing one wart can trigger clearance of others. For warts that have resisted two or more treatment methods, electrocautery or laser treatment becomes worth considering despite the longer healing time. Whatever method you use, persistence matters more than which specific treatment you pick. Most warts eventually clear with repeated treatment, and combining methods (like salicylic acid between cryotherapy sessions) often works better than either alone.