MAKEUP PRODUCTS (NON-PERMANENT)

While many chemicals in cosmetics pose slight or zero threat, some are linked to considerable health conditions, such as cancer, reproductive and neurological harm, and developmental delays. Chemicals in cosmetics invade a person's body through the skin, inhalation, ingestion and internal use, and cause similar risks as food chemicals, per this site.

Chemicals associated with cancer are found in water, food, and various other ordinary goods. Yet, no classification of consumer goods is susceptible to less government oversight than cosmetics, including self sharpening precision eyeliner. Though many of the contaminants and chemicals in cosmetics likely present very little risk, subjection to some is associated with critical health problems, such as cancer.