When framing the periwound area with skin sealant, how far beyond the wound edges should it be extended?

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Extending the skin sealant 3 to 5 cm beyond the wound edges provides a protective barrier that shields the periwound skin from adhesive trauma and moisture, while giving a stable margin for dressing adhesion. This larger margin covers the vulnerable surrounding skin and accommodates slight swelling or movement, helping prevent maceration and dressing lift. A smaller extension may leave skin near the edge exposed to irritation, whereas a larger extension isn’t necessary and can make dressing application more cumbersome. So, 3 to 5 cm is the best choice.