Compeed Corn Plasters Medium are specially designed to protect cushion and heal painful corns and callouses. These corn patches help to create a second skin over damage areas. This protects the corns from rubbing and pressure which can make them even more painful and enlarged. These foot plasters actively work to help keep corns free from extra damage. They include hydrocolloid technology which comes in a gel which helps improve the natural moisture balance around the corn. This in turn helps to soften the corn so it is easier to remove. These corn plasters help to relieve pain immediately so you get an instant soothing effect as soon as they are applied. They will stay in place firmly for up to seven days until you are ready to treat the corn. These plasters don't use any acids to treat corns either the HydroCure system instead works to soften the corn so comes away quickly and painlessly. These plasters are hypoallergenic waterproof and bacteria-proof so they won't cause hardened skin to become infected.