I'm guessing those edges roll just like any other edges. If the roll direction is away from the razor (which would make sense) then "steeling" them by dragging across some surface might work and maybe you could get a few more shaves out of one.
I suspect just doing a good cleaning would help too.
I disassembled one once. Those little blade strips are very thin and flimsy. Not much steel there at all to work with. Actually I'm surprised they work as well as they do.
I know EOU pulled one apart and tested it for sharpness. It was as sharp as a DE razor.
I just buy the cheapest double edge ones I can find and then pitch them when they get dull. I wouldn't want to be accused of not contributing my part in adding to the billions of little bits of plastic in our landfills. Onion other hand, I do resharpen utility knife blades.
I suspect just doing a good cleaning would help too.
I disassembled one once. Those little blade strips are very thin and flimsy. Not much steel there at all to work with. Actually I'm surprised they work as well as they do.
I know EOU pulled one apart and tested it for sharpness. It was as sharp as a DE razor.
I just buy the cheapest double edge ones I can find and then pitch them when they get dull. I wouldn't want to be accused of not contributing my part in adding to the billions of little bits of plastic in our landfills. Onion other hand, I do resharpen utility knife blades.