Hydrocolloid dressings are a type of advanced wound care product designed to promote a moist wound environment, which can accelerate healing. These dressings consist of a matrix of carboxymethylcellulose, gelatin, and pectin, which forms a gel-like substance when it comes in contact with wound exudate. This gel helps to maintain a moist environment, protect the wound from external contaminants, and reduce pain during dressing changes.