Moist wound healing: why "let it breathe" is outdated
The advice to leave a wound uncovered has been superseded by decades of evidence.
"Let it get some air" is still common advice and it is not supported by the evidence. Wounds kept at a controlled moisture level close faster and scar less than those allowed to dry.
The mechanism
New skin cells migrate across a wound surface. They move readily through a moist environment and struggle across dry, hardened crust, which they must burrow beneath instead.
Moist is not wet
The aim is a controlled level, not saturation. A wound sitting in fluid macerates the surrounding skin and raises infection risk. This is why absorbency matters — the dressing manages fluid rather than sealing it in.
Practical implications
- Cover wounds rather than leaving them open.
- Match absorbency to how much fluid is being produced.
- Change when saturated, not on a fixed schedule regardless.
- Use a non-adherent contact layer so the new surface does not bond to the pad.
See a pharmacist, GP or urgent care if a wound will not stop bleeding after ten minutes of firm pressure, is deep or gaping, was caused by something dirty or rusty, contains anything you cannot flush out, or shows spreading redness, heat, swelling, pus or a fever. Get help urgently for animal or human bites, wounds over a joint, and any wound in someone with diabetes or poor circulation.
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FitMedix products are CE-marked medical devices intended for the care of minor wounds. This site does not provide medical advice — seek professional help for deep, dirty or non-healing wounds, or if signs of infection appear. Always read the instructions on the pack.