MAKEUP PRODUCTS (NON-PERMANENT)

Although most chemicals in beauty products present little or no threat, several have been linked to substantial health problems, including cancer, reproductive and neurological harm, and developmental delays. Cosmetic chemicals can enter a person's body through internal use, the skin, and inhalation, and lead to similar problems as food chemicals, per this site.

Chemicals linked to cancer are found in food, water, and various other common items. However, no classification of consumer items is subject to less government management than cosmetics, including Waterproof Pencils. Though most of the chemicals and contaminants in cosmetics in all likelihood present little risk, being exposed to a few is linked to significant health concerns, including cancer.