McKesson Hydrogel Amorphous Wound Dressing. 1 fl. oz. (28 g) - packaged in an innovative accordion-like tube, designed to ease dispensing of the gel into difficult-to-reach areas. 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 and frequency of dressing change. Amorphous. Non-Cytotoxic. Non-Sterile. Not Made With Natural Rubber Latex.