ConvaTec AQUACEL Extra – Hydrofiber Wound Dressing (without silver) is derived from 100% pure sodium carboxymethylcellulose. AQUACEL dressing looks and feels like other gauze and alginate dressings, but retains more fluid than both. Amazingly, AQUACEL retains as much as 3 times more fluid than gauze alone. AQUACEL dressings can be used for pressure ulcers, leg ulcers, incisions, donor sites, second degree burns, and infected wounds. Think of it as gauze made smarter!