When I received my Stainless Steel Karve Christopher Bradley safety razor, I noticed it came with a maintenance card. The card mentioned this:
"Any dry threads may wear over time through tightening and loosening. Your razor is no different. Be sure to apply a drop of oil or a dab of grease to the top cap threads on a regular basis. We use petroleum jelly."
I then e-mailed Chris and asked him how often "on a regular basis" is to him. His answer was:
"Application doesn't need to be that frequent, say every 6 shaves or so. You should be able to see some of the wax or jelly in place and you'll notice that the lubricated threads feel better than unlubricated or under-lubricated threads."
So today, I bought this...