Superdrug Medicated Corn Plasters Contain A Unique Salicylic Acid Paste That Penetrates And Helps Remove Hard Corns While The Felt Ring Relieves Pressure Product Information:Superdrug Medicated Corn Plasters Contain A Unique Salicylic Acid Paste That Penetrates And Helps Remove Hard Corns While The Felt Ring Relieves Pressure,Product Specification:Product Code: 563226