FRAGRANCES

Though many chemicals in cosmetic products present hardly any or zero risk, several have been associated with substantial medical conditions, such as developmental delays and cancer. Cosmetic chemicals can enter the body through ingestion, inhalation, and internal use, and pose the same dangers as food chemicals, per this site.

Contaminants and chemicals linked to cancer can be found in water, food, and a lot of other ordinary products. Yet, no category of consumer products is subject to less government direction than cosmetics and other personal care products, including Justin Bieber's Girlfriend Scented Tattoo. Though many of the contaminants and chemicals in cosmetics in all likelihood pose little risk, being exposed to some has been linked to critical health conditions, such as cancer.