I've got an Edin Jagger model as well, used for many years now. Double-edged safety razor. I also use it to shave my head. Knifes I can generally use a couple o

I've got an Edin Jagger model as well, used for many years now. Double-edged safety razor. I also use it to shave my head. Knifes I can generally use a couple of weeks before replacing and it's cheap to buy a box of like 100 knifes. That will probably last me multiple decades.