Examples from the Web for petrolatum
Melt the petrolatum and add the tincture of cantharides, and while cooling add the other ingredients.Secrets of Wise Men, Chemists and Great Physicians|William K. David
Lard, petrolatum (or cosmoline or vaseline), cold cream and lanolin.Essentials of Diseases of the Skin|Henry Weightman Stelwagon
The absorbing medium is then treated with a solvent of the caffeol, and the solution is separated from the petrolatum.All About Coffee|William H. Ukers
These experiments did not show conclusively that no iodin was absorbed by the petrolatum during the process of solution.
This use of liquid petrolatum and of petrolatum products generally is by no means novel.