The dynamic duo: titanium dioxide and zinc oxide in uv-protective cosmetic formulations
Background: Photoprotection has become an essential aspect of preventing keratinocyte cancer and photoaging. However, the use of organic ultraviolet (UV) filters like oxybenzone and octinoxate has raised concerns due to their potential environmental impact and human health risks. Consequently, inorganic UV filters, namely zinc oxide (ZnO) and titanium dioxide (TiO2), have gained significant importance in discussions regarding photoprotection. These filters are employed in sunscreens as nanoparticles, with a particle size below 100 nm.