MAKEUP PRODUCTS (NON-PERMANENT)

While the majority of chemicals in beauty products present slight or zero risk, several dozen have been linked to considerable medical issues, including cancer, reproductive and neurological harm, and developmental delays. Cosmetic chemicals can enter a person's body through ingestion, inhalation, and internal use, and pose similar problems as food chemicals, per this site.

Chemicals linked to cancer can be found in food and several other common goods. But, no category of consumer goods is susceptible to less government inspection than cosmetics, including Color Instincts Foundation. Although most of the chemicals in cosmetics probably pose little risk, being exposed to a few has been linked to significant health issues, including cancer.