Part 1 Talked about Vaseline or any derivative of a petroleum product increasingly demonized by the “if it didn’t come from a plant, it’s no good” crowd.  Oh, wait, maybe it did come from a plant (eons ago).  It still isn’t welcomed into the natural club.  Seems there is no rhyme or reason to some of these beliefs- where some chemicals are considered “natural” by even though they are synthesized.   Soap is an example.  It’s starting materials are something such as olive oil, palm oil, coconut oil.  It goes into the kitchen natural, but what comes out is not found anywhere in nature.  Soap is synthesis.

Funny thing is, the sales are pretty impressive for Vaseline Total Moisture, which had sales of $78.1 million dollars in 2014.  Must be working pretty good.  Must be satisfying lots of people.  The thing is, with the “naturalists” they sometimes forget that the majority of people focus on performance and the way  it makes their skin feel, as opposed to where it came from or some ideology.

Vaseline

Vaseline

Taking a deeper look into why some would think mineral oil or petrolatum is harmful. Mineral oil comes from naturally occurring crude petroleum oil. There was a period of time when the oil was only mildly refined and contained poly aromatic hydrocarbons which are carcinogenic.  White oils meeting the BP/USP specification have been treated to remove the aromatic components which are, deemed responsible for the carcinogenic potential of mineral oils. Since the 1960’s the refinement of crude oil undergoes a severe hydro-treatment procedure and the PAH molecules have been removed.  What you are left with is a super clean mineral oil testing negative with the Ames test for carcinogenicity.  No reactive species. no odor, perfectly colorless and absolutely consistent products.  Non-acnegenic .
So early on, there was a health problem with products lightly refined from crude oil, but not anymore.

As an aside, rancid veggie oils also show up as carcinogenic- most likely due to radical peroxyacids and epoxides.