<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Barnard, Amanda S.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">One-to-one comparison of sunscreen efficacy, aesthetics and potential nanotoxicity</style></title><secondary-title><style face="normal" font="default" size="100%">Nature Nanotechnology</style></secondary-title><short-title><style face="normal" font="default" size="100%">Nature Nanotech</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">4/2010</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">5</style></volume><pages><style face="normal" font="default" size="100%">271 - 274</style></pages><abstract><style face="normal" font="default" size="100%">This article summarizes a simulation done looking at how the size of titanium dioxide nanoparticles and their concentration in sunscreens can affect efficacy, aesthetics, and potential toxicity from free radical production. The simulation results reveal that, unless very small nanoparticles can be shown to be safe, there is no combination of particle size and concentration that will deliver optimal performance in terms of sun protection and aesthetics.</style></abstract><issue><style face="normal" font="default" size="100%">4</style></issue></record></records></xml>