Well as some of you may or not know vaseline is the by product of petroleum. As is plastic. What some of you will probably not know is the these products act as phytoestrogens that can severly impact your man hood.
Anything you put on your skin is absorbed into your blood stream within about 20-30 min depending on area of application.
Basically it reduces your testosteorne levels.
And it will damage plastics, cock rings pump seals ect.