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henkverhaar said:Ah, Mr King even has a patent for it (British patent from 2005, GB 2414484). In it, he claims that the magnetic particles serve to keep a microscopic layer of gel on the blade after rinsing, thereby preventing corrosion between shaves (no claims as to effects during shaving are made). No proof of any of this is offered. Since gels are water based, and iron oxide is not passivating (iron does not stop oxidizing under a coat of rust, unlike aluminium, which is protected from oxidation under a closed layer of aluminium oxide), this sound like a load of crap to me... But patents do not HAVE to prove their claims, until challenged.
Part of me wonders.................. would it be worth challenging?