McKesson, Hydrogel Dressing McKesson 2 X 2 Inch Square Sterile, Case Of 4Product Description McKesson Hydrogel Sheet Dressings 2" x 2" (5 cm x 5 cm) Primary dressing for wounds with light or no exudate that add or maintain moisture. Helps maintain a moist wound healing environment to assist in autolytic debridement. To protect peri wound skin from maceration, apply a moisture barrier ointment or barrier film. Recommended Secondary Dressings: Cover with an appropriate secondary dressing depending on the amount of exudate