Pulsed-dye laser treatment burns closed (cauterizes) tiny blood vessels. The infected tissue eventually dies, and the wart falls off. The wart will naturally fall off after a few weeks. Using laser to remove warts is usually not considered a first choice for wart removal The evidence for the effectiveness of this method is limited, and it can cause pain and scarring. However, it is sometimes used when the warts are widespread, very large or all other treatments have failed. Laser can be used as a last resort treatment for warts. Laser is suitable to treat large areas in one sitting. Laser treatment is considered safe.
An anesthetic is often needed to numb the area being treated with laser and the treated area will possibly be painful for a few days after the treatment. Five or more treatments may be needed for stubborn warts. It is usually more expensive than other treatments.
There is little advantage to removing warts with a laser unless the warts are very large (mosaic warts) or there are a large number to be removed. The risks associated with the use of the laser are the same as for cutting the warts out. These risks include infection and the development of scartissue after healing.