Comparison of photoprotection efficiency and antiproliferative activity of ZnO commercial sunscreens and CeO2
Cerium oxide nanopowders were successfully synthesized by a simple microwave-hydrothermal method. The UVB protection of an emulsion containing cerium oxide was evaluated in vitro and compared to the one provided by the same emulsion, zinc oxide instead of cerium oxide. Cerium Oxide offered better protection against UVB radiation. Finally, invitro cytoxicity of cerium oxide and various zince oxide commercial sunscreens was carried out using NCTC2544 cell line. Assessment of cell viability demonstrated that all tested zinc oxide particles did not produce any effects on NCTC2544 growth at the highest concentration tested.