I use a safety razor (I carry the razor head stored inside a 3D printed sleeve, and screw it to a handle shared by toothbrush and spoon).
I carry blades in their retail plastic container (Wilkinson/Feathers/Derby)
After a few weeks, blades show signs of surface rust. Probably because I store them in my mesh toiletry bag, which is almost constantly damp.
1. I could try to store blades in a different, drier, location.
2. I could wrap the container in plastic film
3. I could stumble on an after market waterproof blade storage box.
4. I could learn from member of that community about a better solution…




