| http://www.w3.org/ns/prov#value | - According to a report in the International Journal of Toxicology by the Cosmetic Ingredient Review (CIR) committee, impurities found in various PEG compounds include ethylene oxide, 1,4-dioxane, polycyclic aromatic compounds, and heavy metals such as lead, iron, cobalt, nickel, cadmium, and arsenic.
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