Wound Care: Keep It Covered and Moist, Not Dry
Contrary to traditional advice, you should NOT keep a clean wound dry—instead, cover it with an occlusive dressing to promote faster healing. The outdated practice of "keeping wounds dry" actually slows healing and increases scarring.
The Evidence Against Keeping Wounds Dry
Moist wound healing is superior to dry healing in every measurable way:
- Wounds covered with occlusive dressings heal 1-2 days faster than those left exposed to air 1
- Dry wounds form scabs that delay epithelialization and result in more tissue necrosis 2, 1
- Moist environments produce better quality epidermis with less scarring 1
- Exposed wounds lose water vapor, causing the upper dermis to dry out and forcing healing to occur beneath a dehydrating scab 2
Optimal Wound Management Algorithm
Immediate Care (First 24 Hours)
Clean the wound thoroughly:
- Irrigate with sterile saline or tap water—there is no evidence that antiseptic solutions are superior 3
- Remove any debris or contamination through irrigation 3
Cover with an occlusive dressing:
- Simply covering the wound with a sterile gauze dressing is the easiest and most effective approach 4
- Occlusion prevents contamination and maintains the moist environment needed for optimal healing 3, 2
- Clean technique (non-sterile) is as effective as sterile technique and does not increase infection rates 5
Ongoing Care
The wound can get wet within 24-48 hours:
- Patients can shower or get the wound wet after the first day without increasing infection risk 3
- This contradicts the common instruction to "keep it dry" that many patients receive
Change dressings as needed:
- Frequent dressing changes can provide mild debridement if needed 2
- Hydrocolloid dressings can be left in place longer than gauze 1
Why Moist Healing Works Better
The physiological advantages are clear:
- Moist environments prevent dehydration of exposed tissues, which is one of the three factors that most drastically affects healing speed and quality 2
- Epithelialization occurs faster when cells can migrate across a moist surface rather than burrowing beneath a dry scab 1
- In experimental models, wet environments produced complete epithelialization by day 6, moist by day 7, and dry by day 8 1
Common Pitfalls to Avoid
Don't leave wounds exposed to air:
- Air exposure causes rapid scab formation within 3-24 hours, sacrificing more tissue in the process 2
- This may only be justified in large burns where rapid scab formation might reduce severe infection risk 2
Don't use prophylactic antibiotics for simple wounds:
- There is no evidence that prophylactic antibiotics improve outcomes for most simple wounds 3
- Reserve antibiotics for wounds showing signs of infection
Don't over-complicate the dressing:
- One study found that packing wounds with gauze caused more pain without improving healing compared to simply covering with sterile gauze 4
When to Refer
Wounds requiring specialist care include those that:
- Cover large body surface areas
- Involve the face, joints, bone, tendons, or nerves
- Are severe burns 3