I used to have MAJOR blister problems at WDW (flat feet are part of my problem) but now with anti-perspirant and the wicking socks I haven't had a blister in the last few years. I have used whatever anti-perspirant I have around. I usually pick up a solid in the "sample" section at
WalMart. The last couple of times it has been "Secret" brand, but I am sure I have used others. Just make sure you coat all of your toes and problem spots with it.
pdarrah