an automatically self - adjusting variable permeability providing layer is provided over and in operative interaction with a wound site containing a wound to the integumentary system of a living creature such as the skin of a human patient . the avpp layer has the capability of automatically changing in respective fluid permeability characteristics provided by respective subregions of the avpp layer where the changes are in reaction to extant or changed conditions in corresponding micro - zones of the wound site . the automatic self - adjusting behaviors of the respective subregions of the avpp layer can include providing a faster rate of vapor removal for micro - zones of the wound site that are too wet and providing a slower rate of vapor removal or essentially no vapor removal for micro - zones of the wound site that are too dry .