Is it safe to use petroleum jelly as an anal lube for anal masturbation?
Even safer and healthier are either baby oil or organic olive oil.
The best lube ever:
Petroleum Jelly and Baby Oil mixed. About 70/30 PJ/BO respectively. Mix well and use sparingly. If too thin, add more PJ. Too thick, add more BO. Lasts forever! Give it a try!