In my instance, I'm going to rule out corrosion as a significant factor in edge degradation. I would not rule it out entirely since I would assume oxidation on some level would be inherent in most any environment. Any razor I use for shaving is brought into my bathroom only just prior to the strop and shave. After the shave the blade is dried very well then stropped at least 50 times on plain buffed horsehide and brought to a very dry area of the home.

I recall seeing somewhere that a dry whisker has a similar tensile strength to copper wire of the same diameter. I don't shave dry, but, guilty as charged on being lax on proper prep.

Chris L