Hydrocolloid dressings such as DuoDerm ($29) are often used to treat bedsores, but they can also treat blisters. The thin, flexible patch has a special gel-like texture that absorbs bacteria and pus from a wound. This works great to cover irritated blisters that may bleed. According to Dr. Jaliman, "Since it's sheer, you can place it on a blister and continue using sandals without feeling that much discomfort." Along with helping to ease the pain, it also begins the healing process: "It will seal off the blister and promote faster healing."