I've used the following safety razor blades for shaving my head. Astra, Voskhod, Feather, Perma-Sharp, Gillette Rubie, Ladas, and Wilkinson Sword.
Hands down the best blades for shaving my head have been the Perma Sharp blades. I usually start my head shave on the sides going from back to front. The initial pass with a safety razor and perma blades is so smooth and clean and just beat every other blade I've tried.
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