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Though many chemicals in beauty products and cosmetics present minimal or zero threat, several dozen are linked to severe health problems, including cancer, and neurological harm. Cosmetic chemicals enter a person's body through ingestion, inhalation, and internal use, and pose the same dangers as food chemicals, per this site.

Chemicals and contaminants linked to cancer can be found in water, food, and various other commonly used products. Still, no classification of consumer products is susceptible to less government oversight than cosmetics and other personal care products, including Olay Regenerist Touch of Foundation UV Defense Regenerating Moisturizer. Although most of the chemicals in cosmetics and personal care products almost certainly present little risk, exposure to a few is linked to major health problems, such as cancer.