A very specific type of wetness promoted by a bandage, might promote wound healing better than dry. I don't think high-school pool water will help. New tissue

A very specific type of wetness promoted by a bandage, might promote wound healing better than dry. I don't think high-school pool water will help. New tissue growth is like the rest of our biology. Proteins are made in water solution inside cells. That has to get to the new tissue. Providing a scaffolding with a warm, wet, nutrient-rich environment around the wound should in theory make it heal faster and with less scarring, too. But these environments are also good for pathogen growth and invite infection. And removing detritus and pus and nutrient/gas exchange become issues as well. So just how moist and packed to keep a wound, and with what kind of packing and moisture, has been debated back and forth basically forever.