I find that i get a good shave first go , then 2 and 3 r great. 4 th is good then toss it regardless, shaving every other or 3 day.
The funny thing is, even though the Polsilver didn't FEEL good on this first try, the shave itself was good -- no nicks, no irritation, zero sting from the alum. So, there's that. I'll see how it goes on the second and third.