These dressings require changing around every two days, sometimes more, due to the amount of liquid that they absorb and the nature of the wound care. Changing them too often could cause too much dryness or could lead to bacteria penetrating the wound. These should only be used for wet wounds with high liquid drainage; else they can hinder healing by drying out wounds too quickly.http://www.ygimco.com/function....al-wound-dressing/wo