Yes you can, i usually draw the b-12 from the vial with a slin pin, and squirt the b-12 into my oils. It looks like a lava lamp...pretty cool. The B-12 is water based so it absorbs pretty quickly, you don't notice it at all.
LMAO id look at that whilst about to pin myself and think... WTF am i doing
Just heat the solution over some boiling water or in the oven once the oven has reached its tempeture. Sometimes there are just some things people like us have to put up with. ENJOY