DuoDERM Signal�dressing is an adhesive, tapered edge, modern hydrocolloid wound dressing with a change indicator. It incorporates a unique ConvaTec hydrocolloid formulation that distinguishes it from other hydrocolloid dressings. The adhesive hydrocolloid matrix and the outer film on DuoDERM Signal�dressing is permeable by moisture vapor and provides an occlusive barrier against bacteria, viruses, dirt and water. DuoDERM Signal�Dressing is indicated for the management of lightly to moderately exuding wounds.