Light oil does not rinse off 100% so I never feel
obligated to oil after each shave.
You can use a Q-tip (cotton bud).
Cut it in half since you only need one
end.
A couple of extra drop of oil in the bottom
of a pill bottle might last a month with the
same Q-tip.
I use a single or half a sheet of bathroom tissue.
to wipe it if needed.