Cerium dioxide nanoparticles are currently under investigation as possible UV-blocker within sunscreens. The barrier function of the skin protects the body from possible adverse effects (compare: body barriers - Nanoparticles and the Skin).


beach suncream ©vimarovi / fotolia.comThe uptake of cerium dioxide particles via the skin is related mainly to cosmetics or pharmaceutical products, e.g. sunscreens. Because CeO2 possesses UV-filter properties but also antioxidative activities it is under investigation as a new UV-blocking agent in sun protecting creams. So far there are no real products on the market available [1].


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  1. Caputo, F. et. al. (2015), Nanoscale, 7(38): 15643-15656.



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