Click Medical Spray Plaster forms a transparent, breathable and flexible film to protect the wound and promote natural healing. It is particularly useful for awkward places such as elbows and knees. . Provides an invisible over skin coating which will protect all day or until washed off with soap and waterHow to use spray plaster?1. Clean and dry the affected area before application.2. Shake can well, hold 10-15 cm from affected area and spray a light coating.3. Allow to dry for approximately 1 minute.4. The spray plaster will be virtually invisible, but will disappear completely over time.