DuoDerm Hydroactive Gel interacts with wound exudate (an oozing wound) to form a moist wound environment that is supportive of the body's healing process. DuoDERM Hydroactive Gel aids the natural wound cleansing and healing process without damaging newly formed tissue. This gel is designed to be used in conjunction with a secondary dressing such as a DuoDERM wound dressing. 15 gram tube, 30 gram tube. Sold by the each.