The hot edge is, theoretically at least, sharper than the cool one by virtue of expansion of the metal. That's better for your face. Anyone putting the blade before their face has their priorities mixed.

And moisture allowed to sit at the pivot will your razor right quick! Don't be a dummy. Dry it very well by carefully blowing through the scales from the spine side at the pivot and then letting it air dry before putting it away. Kepping it in cardboard and/or a cedar box to help absorb vestigial moisture is also a good idea.

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