Harvard Health Tips

Blister strategies

If you develop a blister, don't pop it. The skin provides a natural defense against infection. A blister should drain on its own in a few days, as a new layer of skin forms underneath the fluid. If you have a blister so large and painful that it interferes with walking, seek medical help. Also seek help if you notice that the fluid in the blister is not clear but looks more like pus,…

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