MAKEUP PRODUCTS (NON-PERMANENT)

While most chemicals in beauty products and cosmetics pose slight or zero threat, several dozen are associated to significant medical problems, including developmental delays and cancer. Chemicals in cosmetics can enter your body through inhalation, ingestion, and the skin, and lead to similar dangers as food chemicals, per this site.

Chemicals associated with cancer can be found in food and several other common products. However, no type of consumer products is accountable to less government oversight than cosmetics and other personal products, including Eyeliner. Although many of the chemicals and contaminants in cosmetics almost certainly present very little risk, being exposed to a few is associated with worrying health disorders, including cancer.