Dr. Weeks’ Comment: FDA not being careful – being profitable. Years later, after FDA approval, titanium dioxide, when tested, is found to be unsafe.
Common Cosmetic and Sunblock Ingredient, Titanium Dioxide, May Have Potential Health Risks
Sep. 25, 2013 — Using a particular type of titanium dioxide — a common ingredient in cosmetics, food products, toothpaste and sunscreen — could reduce the potential health risks associated with the widely used compound. The report on the substance, produced by the millions of tons every year for the global market, appears in the ACS journal Chemical Research in Toxicology.
They tested titanium dioxide powders on pig skin (which often substitutes for human skin in these kinds of tests) with indoor lighting, which has very little ultraviolet light in it. They discovered that one of the two most commonly used crystalline forms of TiO2, called rutile, easily washes off and has little effect on skin. Anatase, the other commonly used form, however, was difficult to wash off and damaged the outermost layer of skin — even in low ultraviolet light. It appears to do so via “free radicals,” which are associated with skin aging. “The present findings strongly encourage the use of the less reactive, negatively charged rutile to produce safer TiO2-based cosmetic and pharmaceutical products,” the researchers conclude.Journal Reference:
- Francesco Turci, Elena Peira, Ingrid Corazzari, Ivana Fenoglio, M. Trotta, Bice Fubini. Crystalline phase modulates the potency of nanometric TiO2to adhere and perturb the stratum corneum of porcine skin under indoor light.. Chemical Research in Toxicology, 2013; : 130912183629009 DOI: 10.1021/tx400285j