Any tips for cantharone application under and around fingernails?

Be careful! Cantharone is a blistering solution used to treat viral conditions like warts and mollusca. It should be applied in the office during an appointment. You will be happy to know that cantharone does not hurt when it is applied to your skin. Blistering after application my result in blood blister formation that can damage the fingernail bed and disrupt normal nail growth.