The McKesson Xeroform Petrolatum Dressing, 4" x 4" (10.1 cm x 10.1 cm) Sterile. Contains 3% Bismuth Tribromophenate to provide bacteriostatic properties and help to reduce risk of infection and deodorize the wound. Primary dressing for wounds with light or no exudate. Helps maintain a moist wound healing environment to assist in autolytic debridement. Single Use. Not Made With Natural Rubber Latex. 1 Per Pack