Best way to keep razor blades sharp?

Serious answer: Don't rinse them under cold water straight after finishing your shave as the sudden temperature change can apparently cause the blade to warp very slightly. Rince them in warm water.
 
i seem to remember some stuff on this,

I think a lot of the time your razor is corroded and covered with scale thats why its blunt...

to keep it sharop longer it needs to be dried properly and NOT kept in a damp place (ie the bathroom)

- never tried it myself..
 
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