MAKEUP PRODUCTS (NON-PERMANENT)

While most chemicals in beauty products and cosmetics present hardly any or no threat, several are associated with serious medical conditions, such as cancer, reproductive and neurological harm, and developmental delays. Chemicals in cosmetics invade a person's body through inhalation, ingestion, and the skin, and lead to similar problems as food chemicals, per this site.

Contaminants and chemicals linked to cancer are found in food, water, and several other commonly used goods. Still, no type of consumer goods is subject to less government oversight than cosmetics, including La Ligne de Chanel Professional Eyeliner Duo. Though most of the chemicals in cosmetics and personal care products probably pose very little risk, exposure to some has been linked to significant health issues, including cancer.