If you have hair on your face like other people I know, than this may come in handy when they mis-place, lose or wear out the charger they have. I can't vouch for it personally as I do not have a need to shave my face.. being you know, female.
I purchased this adapter for a Philips Norelco 8160XLCC (My original cord was packed during a move). It was much cheaper than the Norelco $36 one or any of the others listed on Amazon. But it worked like a champ. I have had no issues so far. It also comes with a converter plug. I haven't tried that yet. If you lose your original power cord - or want a second one for travel - for the price, it can't be beat.