| http://www.w3.org/ns/prov#value | - Carbomers routinely contain impurities, including benzene, arsenic and heavy metals, including lead, (CTFA, Submission of data, Cosmetic Ingredient Chemical Description on Carbomers, Nov, 14, 1978), all of which are carcinogens (Report on Carcinogens, 11th Edition, USDHHS, National Toxicology Program, 2004).
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