t’s been around since the 1980s and first became popular in ostomy care. You may recognize hydrocolloid from those blister pads you can buy at drugstores. The material absorbs fluid from a wound, forming a gel that gets trapped in the bandage, turning the area of the bandage white. Hydrocolloid can help speed healing by keeping the underlying area moist, a key tenet in wound-healing. “It’s almost miraculous,” says Dr. Gary Brauner.