I am going on a several hundred mile trip soon. I’m preparation I have been going barefoot as much as possible to toughen the soles of my feet. I already know to change socks often and to put bandaids over blisters/hotspots etc etc. I have only been on shorter trips, so while I realize taking care of my feet is vitally important, I don’t have experience in doing it long term, just the basics of changing socks and using blister bandaids, and that’s about it.

What should I carry in my first aid kit to keep my feet in good condition? I see a million different foot powders and tinctures and creams, I know nothing about these things so I am unsure what to get.

For reference I will be in a hot and humid environment.