Aloe Vera from the plant itself is good lube for jelqing or whatever. Some even use it for intercourse. Use the goo in the middle of the “leaves.”
I really wish I had known about this years ago. I have a huge aloe vera plant, and only a small portion nipped off provides a long-lasting lube. Of course, as with anything, start out using only a little on a small area to test for any allergic or other negative reactions. It doesn’t bother my skin at all, and probably actually helps it.
Aloe Vera likes fairly warm temperatures. It won’t tolerate frost. Direct sun is ideal, but too much sun in harsh environments can burn it. It can be grown inside as a potted plant, though I have no experience with that.