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+1 on this advice. The alcohol that I've found most commonly in the store is only 70%, which means it could be up to 30% water. If you poke around a bit though, you should be able to find some 90%+.

Don't forget to leave the razor open to dry for a while. Some strop the blade along a piece of tissue to dry the edge. If you live in a low humidity environment oil would be an extra precaution,...