Blisters are caused by skin friction. Don’t pop them. Apply moleskin or an adhesive bandage over a blister, and leave it on until it falls off naturally in the bath or shower. Keep your feet dry and always wear socks as a cushion between your feet and shoes. If a blister breaks on its own, wash the area, apply an antiseptic, and cover with a sterile bandage.
Information collected from the American Podiatric Medical Association, Inc
