MAKEUP PRODUCTS (NON-PERMANENT)

Though the majority of chemicals in cosmetic products pose hardly any or zero threat, several have been linked with severe medical problems, such as developmental delays and cancer. Cosmetic chemicals can enter a person's body through ingestion, inhalation, and internal use, and cause the same problems as food chemicals, per this site.

Chemicals and contaminants associated with cancer are found in food, water, and a lot of other commonly used goods. But, no sector of consumer goods is subject to less government management than cosmetics, including L'Oreal Pencil Perfect Eyeliner. While most of the chemicals in cosmetics very likely pose little risk, exposure to some is associated with substantial health problems, including cancer.