Diagram of Different UV Exposure Methods (IMAGE) American Institute of Physics Caption Scientists are using nanoparticle screening on personal care products and finding previously thought toxic chemicals may not be harmful. In Biomicrofluidics, researchers discuss their work successfully using microchips to demonstrate titanium dioxide, a chemical found in most sunscreens, not only is nontoxic but also offers protection against ultraviolet damage to skin cells. This image is a diagram of different UV exposure methods. Credit Craig Priest Usage Restrictions Journalists may use this image only with appropriate credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.