MAKEUP PRODUCTS (NON-PERMANENT)

While the majority of chemicals in cosmetics present little or zero risk, several are associated with significant medical conditions, such as cancer, and neurological harm. Chemicals in cosmetics can enter the body through inhalation, ingestion, and the skin, and pose the same dangers as food chemicals, per this site.

Chemicals and contaminants associated with cancer are found in food, water, and various other ordinary products. Still, no category of consumer products is susceptible to less government direction than cosmetics, including cake eyeliner. Though most of the chemicals in cosmetics almost certainly present very little risk, being exposed to some is associated with worrying health problems, such as cancer.