HERE?S HOW POLYMEM WORKS! How Polymem works The Semi-Permeable Film Backing provides a bacterial barrier while allowing gas (O2 and CO2) exchange and maintaining an ideal moisture vapor transmission rate (MVTR). The transparent film backing allows visual inspection of the membrane to determine the need for a dressing change. The Polyurethane Membrane Matrix wicks away up to ten times it?s weight in exudate. It will not fragment and leaves no residue in the wound bed. The membrane contains a cleanser, moisturizer and super-absorbent starch co-polymer. The F-68 Surfactant contained in the dressing, is a mild wound cleansing agent activated by moisture and gradually released into the wound bed. Interfacial tension between healthy tissue and debris is reduced, loosening eschar and necrotic tissue, supporting autolytic debridement and keeping the wound bed clean throughout the entire wound healing process. The Glycerin, a moisturizer contained in the dressing, keeps the dressing from adhering to the wound bed, providing comfort at the wound site. Glycerin also reduces odor, conserves living fat cells, reduces hypergranulation, soothes traumatized tissues and supports autolytic debridement. The Super-Absorbent Starch Co-Polymer contained in the dressing, draws, absorbs and holds excess fluids in the hydrophilic membrane while allowing the body?s natural growth factors and nutrients to concentrate at the wound site.