fasTRACT® Soluble Dental Gauze Dressing is a natural regenerated cellulose that does not contain chemical additives, thrombin, or collagen and is hypoallergenic. Upon contact with blood or saliva, fasTRACT® Soluble Dental Gauze almost immediately converts to a collagen-like substance. Because of its purity and the fact that it degrades rapidly into biocompatible end products, such as glucose and water, it does not adversely affect wound healing. fasTRACT® Soluble Dental Gauze Box of 40 sponges. ( 2 pads per cell - 10 cells per sleeve - 2 sleeves per box)