According to Wikipedia, “diluted solutions of Cantharidin can be used as a topical medication to remove warts and tattoos and to treat the small papules of molluscum contagiosum.” Derived from the green blister beetle, Cantharidin “causes the skin under the wart to blister, lifting the wart off the skin”. Remember that using this product is not recommended if the skin around the treated area is swollen, or if you have high blood sugar. Besides, you should not use Cantharidin if you’re pregnant or if you’re breastfeeding. Don’t forget to let you doctor know if you’re using other drugs in order to be sure that they will not interact with Cantharidin. According to drugs.com, the side effects of using the product in question include skin irritation, blistering, short-term pain after use, and change in color of the skin where Cantharidin is used. You should, of course, call your doctor if any of these side effects occur