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Many skin lotions, creams and oils contain mineral oil, as do many tanning products. Mineral oil may sound safe enough, but… it’s not.
Mineral oil is actually a derivative of petroleum, the same stuff you put in your car’s engine. Because it’s very viscous (slippery), many products use mineral oil as the main ingredient, as it allows the lotion to be spread easily across your skin. This despite the fact that it’s a known carcinogen!
This article address other additives that make many skin lotions dangerous to apply to your skin.