Is Vaseline good for lube? – That’s the main question and the focus of our article about Vaseline being used as lube for sex. We have written a comprehensive article on this subject, providing our dear audience with all the answers they might be seeking about using Vaseline sexually. We may disappoint you, for our research suggest that you should avoid using Vaseline as a lube substitute. This is due to several reasons, but the main one being that Vaseline is made of petroleum jelly. Petroleum jelly is a substance which is considered high risk and harmful for human health. This is due to possibility of being contaminated with polycyclic aromatic hydrocarbons (also known as PAHs).