MAKEUP PRODUCTS (NON-PERMANENT)

Although most chemicals in cosmetic products present hardly any or absolutely no threat, several dozen have been linked to significant health problems, including cancer, reproductive and neurological harm, and developmental delays. Chemicals in cosmetics can enter a person's body through ingestion, inhalation, and internal use, and lead to similar dangers as food chemicals, per this site.

Contaminants and chemicals linked to cancer are found in water, food, and many other commonly used items. Still, no category of consumer items is subject to less government direction than cosmetics, including blemish stick. Though most of the contaminants and chemicals in cosmetics most likely pose little risk, subjection to some is linked to serious health conditions, such as cancer.