MAKEUP PRODUCTS (NON-PERMANENT)

Though most chemicals in cosmetics pose slight or absolutely no threat, several dozen have been associated with substantial medical problems, such as developmental delays and cancer. Cosmetic chemicals get into a person's body through the skin, inhalation, ingestion and internal use, and cause the same risks as food chemicals, per this site.

Chemicals and contaminants linked to cancer can be found in water, food, and several other ordinary products. However, no sector of consumer products is subject to less government oversight than cosmetics and other personal products, including Metallic Eye Liner. Though most of the chemicals in cosmetics likely pose very little risk, exposure to a few is linked to critical health disorders, including cancer.