Cryotherapy is a standard treatment for warts that uses a very cold substance (usually liquid nitrogen) to freeze and deaden the tissue. Cryotherapy can be done in a doctor's office and takes less than a minute.
During the procedure, the doctor applies the liquid nitrogen to the wart using a probe or a cotton swab. Liquid nitrogen can also be sprayed directly on the wart.
Most cryotherapy treatment requires return visits to ensure that the wart is completely removed.
Studies show that cryotherapy is successful about two-thirds of the time, and when combined with salicylic acid treatment, up to 78% of the time.