MAKEUP PRODUCTS (NON-PERMANENT)

While the majority of chemicals in beauty products pose slight or absolutely no risk, several dozen are linked to serious health conditions, including developmental delays and cancer. Cosmetic chemicals can enter the body through inhalation, the skin, and ingestion, and lead to the same risks as food chemicals, per this site.

Chemicals and contaminants linked to cancer can be found in food, water, and several other ordinary items. Still, no classification of consumer items is subject to less government management than cosmetics and other personal products, including Eyeliner. Though most of the chemicals in cosmetics very likely pose little risk, being exposed to some has been linked to major health concerns, including cancer.