MAKEUP PRODUCTS (NON-PERMANENT)

Although the majority of chemicals in cosmetic products pose little or zero threat, some have been associated with serious medical problems, such as cancer, reproductive and neurological harm, and developmental delays. Cosmetic chemicals gain entry to a person's body through internal use, the skin, and inhalation, and lead to similar risks as food chemicals, per this site.

Chemicals associated with cancer are found in food, water, and various other commonly used goods. But, no category of consumer goods is subject to less government inspection than cosmetics, including eye contouring stick (round) 4. Though most of the chemicals and contaminants in cosmetics probably pose very little risk, subjection to some has been associated with significant health problems, including cancer.