MAKEUP PRODUCTS (NON-PERMANENT)

Although most chemicals in beauty products present hardly any or no risk, dozens have been associated with serious medical problems, such as developmental delays and cancer. Chemicals in cosmetics get into a person's body through the skin, inhalation, ingestion and internal use, and lead to the same risks as food chemicals, per this site.

Contaminants and chemicals associated with cancer are found in food and several other everyday goods. However, no classification of consumer goods is subject to less government direction than cosmetics and other personal products, including Contouring Eye Liner. While many of the contaminants and chemicals in cosmetics and personal care products almost certainly pose minimal risk, subjection to some has been associated with critical health concerns, including cancer.