You use toiletries that contain mineral oils.
Mineral oils are often used in products such as moisturizers, lipsticks, lubricants, and even laxatives. This common toiletry ingredient is actually a byproduct of the process of refining crude oil into gasoline and other petroleum products.
Scientific findings suggest that there may be a relationship between the application of mineral oil to the skin and an increased risk of cancer. Inhaling mineral oil fumes has also been linked to lung cancer though the evidence for this relationship is more limited.