Convatec, Thin Hydrocolloid Dressing Film Backing 6 X 7 Inch 187903, Box Of 10Product Description Adhesive. Duoderm CGF Extra Thin is a hydrocolloid moisture retentive wound dressing for superficial wounds with little or no exudate and for early intervention on those at risk for skin breakdown. It combines a unique ConvaTec hydrocolloid formulation that distinguishes it from other hydrocolloid dressings and a vapor permeable outer film to provide an occlusive moist environment. Product Benefits Ingredients Suggestions Special