They insist mineral oil is not natural, though it is found in nature. Natural poisons will kill just as well as synthetic ones.
Many herbs are toxic, can cause liver damage, and are unregulated.
For many years I have struggled with finding products my skin would not react to. Then I found a series of books by the author Paula Begoun. Two of them are especially noteworthy and useful in the search for good beauty products. Don't Go to the Cosmetic Counter Without Me. It was first published in 1991, but it has been updated yearly.