RT Book, Section A1 Baumann, Leslie SR Print(0) ID 1174541225 T1 Oils T2 Cosmeceuticals and Cosmetic Ingredients YR 2015 FD 2015 PB McGraw-Hill Education PP New York, NY SN 9780071793988 LK dermatology.mhmedical.com/content.aspx?aid=1174541225 RD 2024/04/18 AB Oil is a substance that is liquid at room temperature and insoluble in water. Synthetic oils include mineral oil and petrolatum, which are derived from the distillation of petroleum in the production of gasoline. Vegetable oils are pressed out of seeds, and essential oils are steamed from several plant parts, including stems, leaves, and roots. The Cosmetic Ingredient Review (CIR) categorizes vegetable oils in the larger class of edible oils. Edible oils, such as peanut oil, are refined in a process that removes proteins that can cause sensitization in allergic individuals.1 Manufacturers of animal-derived oils, such as lanolin, have to follow strictly certified processes in order to eliminate any risk of infectious agents.