In an online Consumer Update posted earlier today, the FDA says it’s received multiple reports of people who “described singed hair, blisters, burns or skin redness,” or cases in which nearby items went up in flames. Only three of the 14 known incidents involved nearby sources of ignition.
“The labeling for these products clearly states that they are flammable and should be kept away from fire, flame, heat sources, and cigarettes,” writes FDA nurse consultant Karen Nast.
Nast says the numerous instances involving no immediate ignition source are “extremely concerning, especially because people may not be aware that everyday household items like curling irons and straight irons can be hot enough to be an ignition source for these products.”
She also believes that there are likely many more instances of wart removers going up in flames because it’s not something that everyone reports to the proper authorities.
FDA dermatologist Markham Luke writes that if you’re going to use one of these at-home cryogenic wart-removal products, that it should only be used as directed on the labeling, and that people should pay attention to the warning — “Extremely flammable. Do not pierce, burn or expose aerosol spray dispenser to excessive heat, even after use or when the dispenser is empty. This may cause dispenser to explode, causing serious injury.”
It also helps if you use the product in a well-ventilated room.