01/22/2026
“Let it breathe” is advice many of us have heard — but the science tells a different story.
Wound healing isn’t about drying a wound. It’s about cell movement.
When skin is injured, repair occurs through epithelialization — the process by which new skin cells migrate across the wound surface to restore the protective barrier.
When a wound dries out, a scab can form. While scabs may appear protective, they create a physical barrier that makes it harder for skin cells to move efficiently across the wound.
In a moist, protected environment, epithelial cells can glide across the surface more easily. This supports faster closure, reduces irritation to underlying tissue, and improves long-term healing outcomes. That’s why modern wound care focuses on coverage and moisture balance, rather than exposure to air.
Takeaway:
Supporting the body’s natural repair process — by keeping wounds protected and hydrated — helps wounds heal more effectively.
Source:
Ousey, Karen & Cutting, Keith & Rogers, A.A. & Rippon, Mark. (2016). The importance of hydration in wound healing: reinvigorating the clinical perspective. Journal of Wound Care. 25. 122-130. 10.12968/jowc.2016.25.3.122.
