Waterproof bandages have a plastic backing that repels water, dirt, and other contaminants, preventing them from entering your wound. Many waterproof dressings are transparent or have a clear border around the padded area. Some waterproof bandages have a padded area surrounded by a clear border. Other waterproof bandages are completely transparent. The fully transparent dressings allow you to monitor the condition of your wound without having to remove the bandage.
Some waterproof bandages come in liquid form, such as a brush on formula or a spray. These create an invisible barrier on the skin to help create a seal over the wound. Liquid bandages are great for use on large areas or areas that are difficult or awkward to dress.