MAKEUP PRODUCTS (NON-PERMANENT)

While many chemicals in cosmetic products pose hardly any or no threat, some are linked to substantial health problems, such as cancer, and neurological harm. Chemicals in cosmetics gain entry to a person's body through the skin, inhalation, ingestion and internal use, and pose similar problems as food chemicals, per this site.

Chemicals and contaminants associated with cancer can be found in food, water, and a lot of other ordinary goods. Yet, no area of consumer goods is susceptible to less government oversight than cosmetics, including eyeliner. Although most of the chemicals in cosmetics likely present little risk, subjection to some is associated with serious health disorders, including cancer.