I bought the Infinity Razor for Christmas.  I gave one to my wife and kept one.  It is worthless I couldn't remove 1 whisker with it!  It  was like shaving with my finger.  The claim that the blade is sharp is a lie.  I thought it wouldn't be a total loss if my wife could shave her legs with it.  She was happy for a couple of months and then the razor became dull and she stated to nick her legs quite often.  So much for the claim the blade stays sharp for ever.  You would  be better off just buying disposable razors.