Method of Application Foams are applied either directly to the wound, or as a secondary dressing. They can be cut to size, but the dressing should leave about 3-4cm clearance from the outer edges of the wound. Depending on the level of exudate, sheet foams can be left in place for up to 7 days. When filling cavities, the appropriately sized foam cavity dressing can be placed into the wound and left in place for 1-4 days, depending on the level of exudate. Most foams are not waterproof and therefore care needs to be taken when showering or bathing.
Liquid is poured into the wound and resulting foam shapes exactly to the contours of the wound.