Been buying this for years and have never had to ...
Been buying this for years and have never had to replace the shaving heads on my Norelco shaver.  What they say is actually true - it does keep the heads sharp, or sharper at least.  I haven't figured the cost of this compared to buying new shaving heads but i hope i am saving a buck or so - maybe yes, maybe no, whaddaya do?
Rating: 4 stars