MAKEUP PRODUCTS (NON-PERMANENT)

Although most chemicals in cosmetic products pose hardly any or no threat, some are linked with severe medical issues, such as cancer, reproductive and neurological harm, and developmental delays. Cosmetic chemicals enter the body through inhalation, the skin, and ingestion, and pose similar problems as food chemicals, per this site.

Chemicals linked to cancer are found in food and a lot of other commonly used products. However, no type of consumer products is subject to less government direction than cosmetics, including Brow Definer Pencil. Though many of the contaminants and chemicals in cosmetics in all likelihood present very little risk, exposure to some has been linked to significant health concerns, including cancer.