Donald Trump’s ear, grazed and bloodied in an assassination attempt, requires a bandage. What does it mean for everyone else wearing one? If you have to hit the floor while a would-be assassin tries ...

Open areas of skin, such as scrapes and oozing pimples, heal best in moist, sealed environments. Hydrocolloid bandages, patches, and dressings can be used for this purpose. Unlike standard bandages, ...