Small unbroken blisters that don't cause discomfort can be left alone to heal, because the best protection against infection is a blister's own skin

Large,painful blisters can be drained but don't remove the top layer of skin. First clean the blister with rubbing alcohol or antibiotic soap and water. Then sterilize a needle over a flame until the tip glows red; allow it to cool, and the puncture a sma

small hole at the edge of the blister. Drain the fluid by applying gentle pressure. Put a bit of antibiotic ointment on the blister and cover with a bandage.