ALLEVYN Adhesive - Hydrocellular Dressing ALLEVYN Adhesive provides the advantages of ALLEVYN Hydrocellular dressings in a adhesive format for simple and effective fixation. The wound contact layer of ALLEVYN Adhesive is coated with a low allergy adhesive which is designed to adhere well to intact skin, but not to wounds. The adhesive is non-irritating. Adhesive dressings can stay in place for up to seven days. The perforated wound contact layer allows even viscous exudate to pass into the dressing.